1.79 secondsFirst Contentful Paint (FCP) 47%44%9%

0.01 secondsFirst Input Delay (FID) 97%2%1%

Simulate loading on desktop PerformanceIndicates how well the page is performing and highlights opportunities where performance may be improved for prezi.com. This includes details about optimizing page load times which can result in a better user experience.Passing (48)Average (5)Failing (3)Metrics First Contentful Paint — 0.9 s
The time taken for the first image or text on the page to be rendered. Speed Index — 1.0 s
The time taken for the page contents to be visibly populated. Largest Contentful Paint — 0.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Total Blocking Time — 100 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms). Cumulative Layout Shift — 0.08
Cumulative Layout Shift measures the movement of visible elements within the viewport.
View DataOther First CPU Idle — 2.4 s
The time taken for the page's main thread to be quiet enough to handle input. First Meaningful Paint — 0.9 s
The time taken for the primary content of the page to be rendered. Estimated Input Latency — 10 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive prezi.com as laggy when the latency is higher than 0.05 seconds. Network Requests
Below is a list of network requests that were made during page load.URLProtocolStart Time (Ms)End Time (Ms)Transfer Size (Bytes)Resource Size (Bytes)Status CodeMIME TypeResource 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rel=preload>'. Prezi.com should consider using 'link rel=preload>' to prioritize fetching resources that are currently requested later in page load. Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF. Remove duplicate modules in JavaScript bundles
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity. Avoid serving legacy JavaScript to modern browsers — Potential savings of 20 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers. Learn MoreURLPotential Savings (Bytes)https://connect.facebook.net/signals/config/291059134405770?v=2.9.33body>`
Assistive technologies, like screen readers, work inconsistently when `aria-hidden="true"` is set on the document ``. `[aria-hidden="true"]` elements do not contain focusable descendents
Focusable descendents within an `aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. [. ARIA input fields have accessible names
When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `meter` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `progressbar` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. `[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality. `[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used. `[role]` values are valid
All ARIA roles require valid values to perform their intended functions. ARIA toggle fields have accessible names
When a toggle field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `tooltip` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `treeitem` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. `[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies. `[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies. ARIA IDs are unique
The value of an ARIA ID must be unique to prevent other instances from being overlooked by assistive technologies.Names and labels Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies. Document has a `title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search. No form fields have multiple labels
Form fields with multiple labels can be confusingly announced by assistive technologies like screen readers which use either the first, the last, or all of the labels. `frame>` or `iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames. `input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose. Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls. `object>` elements have `[alt]` text
It is advised that alt text is used on 'object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.Tables and lists `dl>`'s contain only properly-ordered `dt>` and `dd>` groups, `script>`, `template>` or `div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up. Definition list items are wrapped in `dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('dt>' and 'dd>'), they must be wrapped in parent a 'dl>' element. Lists contain only `li>` elements and script supporting elements (`script>` and `template>`).
Use proper list structure to aid screen readers and other assistive technologies. List items (`li>`) are contained within `ul>` or `ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('li>') are contained within parent 'ul>' or 'ol>' tags. Cells in a `table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that 'td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience. `th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.Internationalization and localization `html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies. `html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly. `[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.Best practices The document does not use `meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly. `[user-scalable="no"]` is not used in the `meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.Audio and video `video>` elements contain a `track>` element with `[kind="captions"]`
Prezi.com may provide assistance to deaf or hearing-impaired users with captions on videos.ARIA Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.Failing Elements","selector":"div#body-header > div#header-raleway > div.top-row > div.dropdown","boundingRect":{"right":1320,"left":30,"bottom":6,"top":6,"height":0,"width":1290},"explanation":"Fix any of the following:\n Required ARIA children role not present: menuitemradio, menuitem, menuitemcheckbox","lhId":"9-193-DIV","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,4,DIV","nodeLabel":"Discover \n\nPresentation Gallery\nVideo Gallery\nDesign Gallery\nTemplates"}])'>DiscoverPresentation GalleryVideo GalleryDesign GalleryTemplates div#header-raleway > div.top-row > div.dropdown","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,5,DIV","boundingRect":{"right":1320,"left":30,"height":0,"top":6,"width":1290,"bottom":6},"explanation":"Fix any of the following:\n Required ARIA children role not present: menuitemradio, menuitem, menuitemcheckbox","nodeLabel":"Why Prezi \n\nCustomers\nThe science\nConversational presenting","snippet":""}])'>Why PreziCustomersThe scienceConversational presentingShow DetailsContrast Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.Failing Elements div.top-row > div.top-link > a.btn-xs","snippet":"","nodeLabel":"Get started","explanation":"Fix any of the following:\n Element has insufficient color contrast of 3.67 (foreground color: #ffffff, background color: #3181ff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","boundingRect":{"top":20,"bottom":52,"left":1169,"right":1320,"width":151,"height":32},"type":"node","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,2,DIV,0,A","lhId":"9-1-A"}])'>Get started","nodeLabel":"Prezi Present","selector":"section.products > div.products-flex-wrapper > div.products-flex-column > a.btn","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,0,DIV,3,A","type":"node"}])'>Prezi Present div.products-flex-wrapper > div.products-flex-column > a.btn","boundingRect":{"right":1245,"left":885,"top":1449,"height":48,"width":360,"bottom":1497},"explanation":"Fix any of the following:\n Element has insufficient color contrast of 3.17 (foreground color: #ffffff, background color: #00a0aa, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1","snippet":"","type":"node","lhId":"9-45-A","nodeLabel":"Prezi Design"}])'>Prezi Design ul.col-xs-3 > li > a.footer-links","snippet":"","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,1,LI,0,A","type":"node","lhId":"9-46-A","boundingRect":{"bottom":1720,"right":209,"left":120,"top":1705,"width":89,"height":15},"nodeLabel":"The Science"}])'>The Science ul.col-xs-3 > li > a.footer-links","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,2,LI,0,A","boundingRect":{"top":1730,"right":226,"height":31,"bottom":1761,"width":106,"left":120},"snippet":""}])'>Conversational Presenting","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,3,LI,0,A","boundingRect":{"top":1771,"height":15,"left":120,"right":208,"bottom":1786,"width":88},"selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","nodeLabel":"For Business"}])'>For Business","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","boundingRect":{"top":1796,"left":120,"bottom":1811,"right":216,"height":15,"width":96},"type":"node","lhId":"9-49-A"}])'>For Education ul.col-xs-3 > li > a.footer-links","snippet":"","lhId":"9-50-A","type":"node","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,5,LI,0,A"}])'>Testimonials","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","boundingRect":{"width":145,"bottom":1861,"top":1846,"right":265,"left":120,"height":15},"type":"node","lhId":"9-51-A","nodeLabel":"Presentation Gallery","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>Presentation Gallery","nodeLabel":"Video Gallery","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","boundingRect":{"right":214,"height":15,"left":120,"top":1871,"width":94,"bottom":1886},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,7,LI,0,A","type":"node","lhId":"9-52-A"}])'>Video Gallery","lhId":"9-53-A","type":"node","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","boundingRect":{"right":220,"left":120,"top":1896,"bottom":1911,"width":100,"height":15},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,8,LI,0,A"}])'>Design Gallery","nodeLabel":"Templates","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,UL,9,LI,0,A","type":"node","boundingRect":{"height":15,"top":1921,"right":195,"left":120,"bottom":1936,"width":75},"selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links"}])'>Templates ul.col-xs-3 > li > a.footer-links","type":"node","snippet":"","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,3,UL,1,LI,0,A","nodeLabel":"About","boundingRect":{"left":300,"width":43,"height":15,"right":343,"bottom":1720,"top":1705},"lhId":"9-55-A"}])'>About","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","lhId":"9-56-A","nodeLabel":"Team","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","boundingRect":{"height":15,"left":300,"top":1730,"width":39,"bottom":1745,"right":339}}])'>Team","type":"node","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,3,UL,3,LI,0,A","nodeLabel":"Careers","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","lhId":"9-57-A","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links"}])'>Careers","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","nodeLabel":"Our Values","boundingRect":{"bottom":1795,"top":1780,"right":374,"width":74,"height":15,"left":300},"lhId":"9-58-A","type":"node","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>Our Values","type":"node","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,3,UL,5,LI,0,A","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","nodeLabel":"Press","lhId":"9-59-A","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links"}])'>Press ul.col-xs-3 > li > a.footer-links","snippet":"","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","boundingRect":{"left":300,"top":1830,"bottom":1845,"height":15,"right":404,"width":104},"lhId":"9-60-A"}])'>Our Customers","nodeLabel":"Company Information","boundingRect":{"right":449,"top":1855,"bottom":1870,"left":300,"width":149,"height":15},"selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","lhId":"9-61-A","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,3,UL,7,LI,0,A"}])'>Company Information","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,3,UL,8,LI,0,A","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","lhId":"9-62-A","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","boundingRect":{"height":15,"right":379,"bottom":1895,"top":1880,"left":300,"width":79},"type":"node"}])'>Contact Us","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links"}])'>Security ul.col-xs-3 > li > a.changelang_loggedout","type":"node","snippet":"","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","boundingRect":{"width":48,"top":1705,"height":15,"bottom":1720,"left":480,"right":528},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,1,LI,0,A","nodeLabel":"English","lhId":"9-64-A"}])'>English","nodeLabel":"Espa\u00f1ol","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,2,LI,0,A","type":"node","lhId":"9-65-A","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>Español ul.col-xs-3 > li > a.footer-links","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,3,LI,0,A","boundingRect":{"left":480,"right":521,"width":41,"height":15,"bottom":1770,"top":1755},"lhId":"9-66-A","type":"node","snippet":"","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>한국어","type":"node","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","lhId":"9-67-A","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>日本語","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,5,LI,0,A","lhId":"9-68-A","type":"node"}])'>Deutsch","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,6,LI,0,A","nodeLabel":"Portugu\u00eas","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","type":"node","lhId":"9-69-A","boundingRect":{"top":1830,"bottom":1845,"right":553,"height":15,"left":480,"width":73}}])'>Português","boundingRect":{"right":536,"bottom":1870,"height":15,"left":480,"width":56,"top":1855},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,7,LI,0,A","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","lhId":"9-70-A","type":"node"}])'>Français","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,8,LI,0,A"}])'>Magyar ul.col-xs-3 > li > a.footer-links","type":"node","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","lhId":"9-72-A","nodeLabel":"Italiano","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,5,UL,9,LI,0,A","snippet":""}])'>Italiano ul.col-xs-3 > li > a.footer-links","type":"node","lhId":"9-73-A","boundingRect":{"bottom":1989,"top":1974,"height":15,"width":95,"left":120,"right":215},"explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","nodeLabel":"Prezi Present","snippet":""}])'>Prezi Present ul.col-xs-3 > li > a.footer-links","boundingRect":{"bottom":2014,"top":1999,"height":15,"right":200,"left":120,"width":80},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,7,UL,2,LI,0,A","snippet":"","nodeLabel":"Prezi Video"}])'>Prezi Video","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,7,UL,3,LI,0,A","type":"node","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","lhId":"9-75-A","nodeLabel":"Prezi Design","boundingRect":{"right":206,"left":120,"height":15,"top":2024,"width":86,"bottom":2039}}])'>Prezi Design","lhId":"9-76-A","boundingRect":{"bottom":1989,"width":40,"left":300,"height":15,"right":340,"top":1974},"explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","nodeLabel":"Learn","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links"}])'>Learn","lhId":"9-77-A","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","boundingRect":{"height":15,"top":1999,"bottom":2014,"width":95,"left":300,"right":395}}])'>Prezi Support","lhId":"9-78-A","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,9,UL,3,LI,0,A","nodeLabel":"Prezi Classic Support","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links","type":"node","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>Prezi Classic Support","lhId":"9-79-A","selector":"div.col-xs-12 > ul.col-xs-3 > li > a.footer-links"}])'>Hire an Expert","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,1,LI,0,P","type":"node","selector":"div.col-xs-12 > ul.pad-zero > li.btm-12 > p.semi-bold"}])'>March 30, 2021 ul.pad-zero > li.btm-12 > a.text-a","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,1,LI,1,A","type":"node","nodeLabel":"3 online classroom games to energize your class","snippet":"","boundingRect":{"left":690,"height":26,"width":365,"bottom":1747,"top":1721,"right":1055},"explanation":"Fix any of the following:\n Element has insufficient color contrast of 3.36 (foreground color: #3181ff, background color: #f3f5f9, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1","lhId":"9-80-A"}])'>3 online classroom games to energize your class ul.pad-zero > li.btm-12 > p.semi-bold","nodeLabel":"March 30, 2021","type":"node","snippet":"

","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,2,LI,0,P"}])'>March 30, 2021","nodeLabel":"3 ways to use video flashcards to engage students and support learning","boundingRect":{"left":690,"bottom":1808,"height":26,"width":530,"right":1220,"top":1782},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,2,LI,1,A","selector":"div.col-xs-12 > ul.pad-zero > li.btm-12 > a.text-a","lhId":"9-81-A","explanation":"Fix any of the following:\n Element has insufficient color contrast of 3.36 (foreground color: #3181ff, background color: #f3f5f9, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1"}])'>3 ways to use video flashcards to engage students and support learning ul.pad-zero > li.btm-12 > p.semi-bold","nodeLabel":"March 24, 2021","type":"node","snippet":"

","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","lhId":"9-197-P","boundingRect":{"height":16,"left":690,"top":1827,"right":1230,"bottom":1843,"width":540}}])'>March 24, 2021","explanation":"Fix any of the following:\n Element has insufficient color contrast of 3.36 (foreground color: #3181ff, background color: #f3f5f9, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1","selector":"div.col-xs-12 > ul.pad-zero > li.btm-12 > a.text-a","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,3,LI,1,A"}])'>Ask the expert: Top tips for virtual presentation success","selector":"div.col-xs-12 > ul.pad-zero > li.btm-12 > a.text-a","type":"node","lhId":"9-83-A"}])'>Latest posts","selector":"div.row > div.col-xs-12 > div.col-xs-12 > p.small","boundingRect":{"height":16,"bottom":1998,"left":690,"width":540,"right":1230,"top":1982},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,3,DIV,1,P","explanation":"Fix any of the following:\n Element has insufficient color contrast of 2.82 (foreground color: #8e939c, background color: #f3f5f9, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1","nodeLabel":"\u00a9 2021 Prezi Inc. Terms s default semantics were not overridden with role=\"none\" or role=\"presentation\"","snippet":"","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,7,DIV,1,DIV,0,DIV,1,A,2,SPAN,0,IMG"}])'>img a.mega-dropdown-menu-link > span.mega-dropdown-menu-link__title > img.mega-dropdown-menu-link__title__icon","snippet":"","nodeLabel":"img","lhId":"9-202-IMG","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","type":"node"}])'>img","type":"node","selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,0,DIV,0,PICTURE,1,IMG","nodeLabel":"img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","lhId":"9-203-IMG"}])'>img","boundingRect":{"bottom":1311,"top":1078,"right":855,"width":360,"left":495,"height":234},"selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,1,DIV,0,PICTURE,1,IMG","lhId":"9-204-IMG","type":"node","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","nodeLabel":"img"}])'>img","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,2,DIV,0,PICTURE,1,IMG","lhId":"9-205-IMG","selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","type":"node"}])'>imgShow Details Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.Failing Elements div#header-raleway > div.top-row > a.nav-logo","snippet":"","type":"node","explanation":"Fix all of the following:\n Element is in tab order and does not have accessible text\n\nFix any of the following:\n Element does not have text that is visible to screen readers\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute","lhId":"9-0-A"}])'>aShow DetailsManual Checks The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen. Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed. Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state. The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it. User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page. Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes. Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles. Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies. Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute. HTML5 landmark elements are used to improve navigation
Elements such as main> and nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.Best PracticesIndicates the recommended, best practices currently in place on the page and highlights the best practices that prezi.com should incorporate. This includes practices such as protecting pages with HTTPS.Passing (14)Failing (4)Audits Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users. Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.Audits Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security. Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio. Serves images with appropriate resolution
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Fonts with `font-display: optional` are preloaded
Preload `optional` fonts so first-time visitors may use them.Audits Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode. Properly defines charset
A character encoding declaration is required. It can be done with a `meta>` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.Audits Avoids Application Cache
Application cache is deprecated and is no longer recommended. Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.NameVersionBootstrap3.3.5jQuery2.1.0Underscore1.6.0jQuery Mobilecore-jscore-js-pure@3.0.0Show Details Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser. No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site. Page has valid source maps
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. No issues in the `Issues` panel in Chrome Devtools
Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.Audits Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.Insecure URLRequest Resolutionhttp://prezi.com/AllowedShow Details Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.Failing Anchors ul.pad-zero > li.btm-12 > a.text-a","snippet":"","nodeLabel":"3 online classroom games to energize your class","boundingRect":{"left":690,"width":365,"right":1055,"top":1721,"bottom":1747,"height":26},"type":"node"}])'>3 online classroom games to energize your class ul.pad-zero > li.btm-12 > a.text-a","boundingRect":{"width":530,"height":26,"left":690,"bottom":1808,"top":1782,"right":1220},"nodeLabel":"3 ways to use video flashcards to engage students and support learning","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,2,LI,1,A","snippet":"","lhId":"9-81-A"}])'>3 ways to use video flashcards to engage students and support learning ul.pad-zero > li.btm-12 > a.text-a","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,3,LI,1,A","snippet":"","lhId":"9-82-A","nodeLabel":"Ask the expert: Top tips for virtual presentation success"}])'>Ask the expert: Top tips for virtual presentation successShow Details Includes front-end JavaScript libraries with known security vulnerabilities — 9 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.Library VersionVulnerability CountHighest SeveritySHOW DETAILS5MediumSHOW DETAILS4MediumShow DetailsAudits Registers an `unload` listener
The `unload` event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Consider using the `pagehide` or `visibilitychange` events instead.SourceSHOW DETAILSShow DetailsSEOIndicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for prezi.com. This includes optimizations such as providing meta data.Passing (13)Failing (1)Manual Checks (1)Mobile Friendly Has a `meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a 'meta name="viewport">' tag for the optimization of prezi.com on mobile screens. Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px. Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.Content Best Practices Document has a `title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search. Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content. Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content. Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links. Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links. Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.Crawling and Indexing Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines. Links are crawlable
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn More Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed. robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.Content Best Practices Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.Failing Elements","type":"node","boundingRect":{"right":341,"bottom":66,"width":14,"top":66,"height":0,"left":327},"selector":"div.mega-dropdown-menu__container > a.mega-dropdown-menu-link > span.mega-dropdown-menu-link__title > img.mega-dropdown-menu-link__title__icon","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,7,DIV,1,DIV,0,DIV,0,A,2,SPAN,0,IMG"}])'>img a.mega-dropdown-menu-link > span.mega-dropdown-menu-link__title > img.mega-dropdown-menu-link__title__icon","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","snippet":"","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,7,DIV,1,DIV,0,DIV,1,A,2,SPAN,0,IMG"}])'>img a.mega-dropdown-menu-link > span.mega-dropdown-menu-link__title > img.mega-dropdown-menu-link__title__icon","snippet":"","nodeLabel":"img","lhId":"9-202-IMG","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","type":"node"}])'>img","type":"node","selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,0,DIV,0,PICTURE,1,IMG","nodeLabel":"img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","lhId":"9-203-IMG"}])'>img","boundingRect":{"bottom":1311,"top":1078,"right":855,"width":360,"left":495,"height":234},"selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,1,DIV,0,PICTURE,1,IMG","lhId":"9-204-IMG","type":"node","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","nodeLabel":"img"}])'>img","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,2,DIV,0,PICTURE,1,IMG","lhId":"9-205-IMG","selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","type":"node"}])'>imgShow DetailsManual Checks Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.Progressive Web AppIndicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of prezi.com. This includes details about web app manifests.Passing (4)Failing (5)Manual Checks (3)PWA Optimized Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users. Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens. Has a `meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a 'meta name="viewport">' tag for the optimization of prezi.com on mobile screens. Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.Installable Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.Failure reasonNo manifest was fetchedShow DetailsPWA Optimized Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications. Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
` tag found"]}])'>View Data Manifest doesn't have a maskable icon
A maskable icon ensures that the image fills the entire shape without being letterboxed when installing the app on a device.Manual Checks Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser. Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network. Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.Avg. (All Categories)PerformanceAccessibilityBest PracticesSEOProgressive Web App0–49 (Fail) 50–89 (Average) 90–100 (Pass) URL: https://prezi.com/Updated: 2nd April, 2021

2.70 secondsFirst Contentful Paint (FCP) 24%57%19%

0.01 secondsFirst Input Delay (FID) 94%4%2%

Simulate loading on mobile PerformanceIndicates how well the page is performing and highlights opportunities where performance may be improved for prezi.com. This includes details about optimizing page load times which can result in a better user experience.Passing (34)Average (10)Failing (13)Opportunities Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Prezi.com should consider lazy-loading offscreen and hidden images. Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Prezi.com should consider minifying CSS files. Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Prezi.com should consider minifying JS files. Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary. Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli. Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins. Initial server response time was short — Root document took 120 ms
Keep the server response time for the main document short because all other requests depend on it.URLTime Spent (Ms)https://prezi.com/117.664Show Details Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Prezi.com should avoid multiple or unnecessary page redirects.URLTime Spent (Ms)http://prezi.com/630https://prezi.com/0Show Details Preload key requests
Key requests can be preloaded by using 'link rel=preload>'. Prezi.com should consider using 'link rel=preload>' to prioritize fetching resources that are currently requested later in page load. Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF. Remove duplicate modules in JavaScript bundles
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity. Avoid serving legacy JavaScript to modern browsers — Potential savings of 20 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers. Learn MoreURLPotential Savings (Bytes)https://connect.facebook.net/signals/config/291059134405770?v=2.9.33re working or learnin\u2026","path":"1,HTML,1,BODY,5,DIV,3,DIV,0,SECTION,0,H2","boundingRect":{"bottom":220,"left":15,"height":128,"top":92,"right":345,"width":330}}])'>Present over video and keep the human connection when you're working or learnin…0.0016169929504395Show Details Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'. Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds. Avoid long main-thread tasks — 10 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay.URLStart Time (Ms)Duration (Ms)https://cdn-s-optional.optimizely.com/js/6739031.js4754548https://www.googletagmanager.com/gtm.js?id=GTM-MQ6FG27197125https://connect.facebook.net/signals/config/291059134405770?v=2.9.33body>`
Assistive technologies, like screen readers, work inconsistently when `aria-hidden="true"` is set on the document ``. `[aria-hidden="true"]` elements do not contain focusable descendents
Focusable descendents within an `aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. [. ARIA input fields have accessible names
When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `meter` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `progressbar` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. `[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality. `[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used. `[role]` values are valid
All ARIA roles require valid values to perform their intended functions. ARIA toggle fields have accessible names
When a toggle field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `tooltip` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. ARIA `treeitem` elements have accessible names
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. `[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies. `[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies. ARIA IDs are unique
The value of an ARIA ID must be unique to prevent other instances from being overlooked by assistive technologies.Names and labels Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies. Document has a `title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search. No form fields have multiple labels
Form fields with multiple labels can be confusingly announced by assistive technologies like screen readers which use either the first, the last, or all of the labels. `frame>` or `iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames. `input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose. Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls. `object>` elements have `[alt]` text
It is advised that alt text is used on 'object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.Tables and lists `dl>`'s contain only properly-ordered `dt>` and `dd>` groups, `script>`, `template>` or `div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up. Definition list items are wrapped in `dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('dt>' and 'dd>'), they must be wrapped in parent a 'dl>' element. Lists contain only `li>` elements and script supporting elements (`script>` and `template>`).
Use proper list structure to aid screen readers and other assistive technologies. List items (`li>`) are contained within `ul>` or `ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('li>') are contained within parent 'ul>' or 'ol>' tags. Cells in a `table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that 'td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience. `th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.Internationalization and localization `html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies. `html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly. `[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.Best practices The document does not use `meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly. `[user-scalable="no"]` is not used in the `meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.Audio and video `video>` elements contain a `track>` element with `[kind="captions"]`
Prezi.com may provide assistance to deaf or hearing-impaired users with captions on videos.ARIA Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.Failing Elements div.row > div.col-xs-12 > div#footer-accordion","type":"node","boundingRect":{"height":245,"top":2712,"right":345,"bottom":2957,"left":15,"width":330},"lhId":"8-191-DIV","nodeLabel":"Prezi\n\nProducts\n\nCompany\n\nSupport\n\nLanguages","path":"1,HTML,1,BODY,5,DIV,5,DIV,4,SECTION,0,DIV,0,DIV,0,DIV,0,DIV","explanation":"Fix any of the following:\n Required ARIA child role not present: tab","snippet":""}])'>PreziProductsCompanySupportLanguagesShow DetailsContrast Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.Failing Elements div.products-flex-wrapper > div.products-flex-column > a.btn","snippet":"","boundingRect":{"height":48,"top":2070,"width":330,"right":345,"left":15,"bottom":2118},"path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,0,DIV,3,A","type":"node","lhId":"8-43-A","nodeLabel":"Prezi Present"}])'>Prezi Present","lhId":"8-45-A","type":"node","explanation":"Fix any of the following:\n Element has insufficient color contrast of 3.17 (foreground color: #ffffff, background color: #00a0aa, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1","nodeLabel":"Prezi Design","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,2,DIV,3,A","boundingRect":{"left":15,"bottom":2606,"right":345,"width":330,"top":2558,"height":48},"selector":"section.products > div.products-flex-wrapper > div.products-flex-column > a.btn"}])'>Prezi Design div.col-xs-12 > div.col-xs-12 > p.small","snippet":"

"}])'>© 2021 Prezi Inc. Terms s default semantics were not overridden with role=\"none\" or role=\"presentation\"","nodeLabel":"img","path":"1,HTML,1,BODY,5,DIV,3,DIV,0,SECTION,2,DIV,0,DIV,0,A,0,DIV,0,PICTURE,1,IMG"}])'>img","path":"1,HTML,1,BODY,5,DIV,3,DIV,0,SECTION,2,DIV,1,DIV,0,A,0,DIV,0,PICTURE,1,IMG","lhId":"8-195-IMG","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","selector":"a.moving-hover > div.video-thumb > picture > img.img-responsive"}])'>img","boundingRect":{"left":15,"width":330,"bottom":1161,"top":975,"height":186,"right":345},"type":"node","selector":"a.moving-hover > div.video-thumb > picture > img.img-responsive","nodeLabel":"img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\""}])'>img div.products-flex-column > picture > img.img-responsive","nodeLabel":"img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","snippet":""}])'>img div.products-flex-column > picture > img.img-responsive","type":"node","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","snippet":"","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,1,DIV,0,PICTURE,1,IMG","nodeLabel":"img","lhId":"8-198-IMG","boundingRect":{"width":0,"height":0,"bottom":2176,"right":15,"top":2176,"left":15}}])'>img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,2,DIV,0,PICTURE,1,IMG","type":"node","boundingRect":{"bottom":2420,"right":15,"width":0,"top":2420,"height":0,"left":15},"selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","lhId":"8-199-IMG"}])'>imgShow Details Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.Failing Elements div#header-raleway > div.top-row > a.nav-logo","path":"1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,0,A","explanation":"Fix all of the following:\n Element is in tab order and does not have accessible text\n\nFix any of the following:\n Element does not have text that is visible to screen readers\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute","snippet":"","type":"node","lhId":"8-0-A","nodeLabel":"a"}])'>aShow DetailsManual Checks The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen. Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed. Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state. The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it. User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page. Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes. Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles. Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies. Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute. HTML5 landmark elements are used to improve navigation
Elements such as main> and nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.Best PracticesIndicates the recommended, best practices currently in place on the page and highlights the best practices that prezi.com should incorporate. This includes practices such as protecting pages with HTTPS.Passing (14)Failing (4)Audits Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users. Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.Audits Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security. Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio. Serves images with appropriate resolution
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Fonts with `font-display: optional` are preloaded
Preload `optional` fonts so first-time visitors may use them.Audits Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode. Properly defines charset
A character encoding declaration is required. It can be done with a `meta>` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.Audits Avoids Application Cache
Application cache is deprecated and is no longer recommended. Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.NameVersionBootstrap3.3.5jQuery2.1.0Underscore1.6.0jQuery Mobilecore-jscore-js-pure@3.0.0Show Details Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser. No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site. Page has valid source maps
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. No issues in the `Issues` panel in Chrome Devtools
Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.Audits Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.Insecure URLRequest Resolutionhttp://prezi.com/AllowedShow Details Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.Failing Anchors","lhId":"8-80-A","nodeLabel":"3 online classroom games to energize your class","type":"node","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,1,LI,1,A","boundingRect":{"bottom":0,"width":0,"top":0,"left":0,"right":0,"height":0},"selector":"div.col-xs-12 > ul.pad-zero > li.btm-12 > a.text-a"}])'>3 online classroom games to energize your class ul.pad-zero > li.btm-12 > a.text-a","lhId":"8-81-A","snippet":"","boundingRect":{"top":0,"height":0,"right":0,"left":0,"width":0,"bottom":0},"path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,2,LI,1,A","nodeLabel":"3 ways to use video flashcards to engage students and support learning"}])'>3 ways to use video flashcards to engage students and support learning ul.pad-zero > li.btm-12 > a.text-a","snippet":"","lhId":"8-82-A","path":"1,HTML,1,BODY,5,DIV,5,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,UL,3,LI,1,A"}])'>Ask the expert: Top tips for virtual presentation successShow Details Includes front-end JavaScript libraries with known security vulnerabilities — 9 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.Library VersionVulnerability CountHighest SeveritySHOW DETAILS5MediumSHOW DETAILS4MediumShow DetailsAudits Registers an `unload` listener
The `unload` event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Consider using the `pagehide` or `visibilitychange` events instead.SourceSHOW DETAILSShow DetailsSEOIndicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for prezi.com. This includes optimizations such as providing meta data.Passing (13)Failing (1)Manual Checks (1)Mobile Friendly Has a `meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a 'meta name="viewport">' tag for the optimization of prezi.com on mobile screens. Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.SourceSelector% of Page TextFont SizeSHOW DETAILS100.00%≥ 12pxShow Details Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.Content Best Practices Document has a `title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search. Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content. Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content. Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links. Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links. Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.Crawling and Indexing Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines. Links are crawlable
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn More Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed. robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.Content Best Practices Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.Failing Elements div.video-thumb > picture > img.img-responsive","snippet":"","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","nodeLabel":"img","path":"1,HTML,1,BODY,5,DIV,3,DIV,0,SECTION,2,DIV,0,DIV,0,A,0,DIV,0,PICTURE,1,IMG"}])'>img","path":"1,HTML,1,BODY,5,DIV,3,DIV,0,SECTION,2,DIV,1,DIV,0,A,0,DIV,0,PICTURE,1,IMG","lhId":"8-195-IMG","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","selector":"a.moving-hover > div.video-thumb > picture > img.img-responsive"}])'>img","boundingRect":{"left":15,"width":330,"bottom":1161,"top":975,"height":186,"right":345},"type":"node","selector":"a.moving-hover > div.video-thumb > picture > img.img-responsive","nodeLabel":"img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\""}])'>img div.products-flex-column > picture > img.img-responsive","nodeLabel":"img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","snippet":""}])'>img div.products-flex-column > picture > img.img-responsive","type":"node","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","snippet":"","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,1,DIV,0,PICTURE,1,IMG","nodeLabel":"img","lhId":"8-198-IMG","boundingRect":{"width":0,"height":0,"bottom":2176,"right":15,"top":2176,"left":15}}])'>img","explanation":"Fix any of the following:\n Element does not have an alt attribute\n aria-label attribute does not exist or is empty\n aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty\n Element has no title attribute\n Elements default semantics were not overridden with role=\"none\" or role=\"presentation\"","path":"1,HTML,1,BODY,5,DIV,3,DIV,2,SECTION,1,DIV,2,DIV,0,PICTURE,1,IMG","type":"node","boundingRect":{"bottom":2420,"right":15,"width":0,"top":2420,"height":0,"left":15},"selector":"div.products-flex-wrapper > div.products-flex-column > picture > img.img-responsive","lhId":"8-199-IMG"}])'>imgShow DetailsManual Checks Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.Progressive Web AppIndicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of prezi.com. This includes details about web app manifests.Passing (4)Failing (5)Manual Checks (3)PWA Optimized Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users. Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens. Has a `meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a 'meta name="viewport">' tag for the optimization of prezi.com on mobile screens. Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.Installable Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.Failure reasonNo manifest was fetchedShow DetailsPWA Optimized Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications. Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
` tag found"],"themeColor":null,"isParseFailure":true}])'>View Data Manifest doesn't have a maskable icon
A maskable icon ensures that the image fills the entire shape without being letterboxed when installing the app on a device.Manual Checks Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser. Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network. Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.HostingServer LocationServer IP Address:75.2.83.248Continent:North AmericaCountry:United States
Region:City:Longitude:-97.822Latitude:37.751Currencies:USD
USN
USS
Languages:English
Web Hosting ProviderNameIP AddressAmazon.com, Inc.RegistrationDomain RegistrantPrivate Registration: YesName:On behalf of prezi.com ownerOrganization:Whois Privacy ServiceCountry:USCity:SeattleState:WAPost Code:98108-1226Email:owner-11797502@prezi.com.whoisprivacyservice.orgPhone:+1.2065771368Note: Registration information is derived from various sources and may be inaccurate.Show MoreDomain RegistrarNameIP AddressAmazon Registrar, Inc.13.225.61.67SecurityVisitor SafetyMature Content: Not LikelyMcAfee WebAdvisor Rating: SafeWOT Rating: 4.7/5 (34 reviews)WOT Trustworthiness:94/100WOT Child Safety:93/100Note: Safety information is not guaranteed.SSL/TLS CertificateIssued To:prezi.comIssued By:AmazonValid From:28th October, 2020Valid To:27th November, 2021Subject:CN = prezi.com
Hash:5eaec39bIssuer:CN = Amazon
OU = Server CA 1B
O = Amazon
S = US
Version:2Serial Number:2706346530779547179268570533633578546Serial Number (Hex):0209392F95F6FCB947992862AC29D632Valid From:28th October, 2021Valid To:27th November, 2021Signature Algorithm (Short Name):RSA-SHA256Signature Algorithm (Long Name):sha256WithRSAEncryptionAuthority Key Identifier:keyid:59:A4:66:06:52:A0:7B:95:92:3C:A3:94:07:27:96:74:5B:F9:3D:D0Extended Key Usage:TLS Web Server Authentication, TLS Web Client AuthenticationCRL Distribution Points:
Full Name:
URI:http://crl.sca1b.amazontrust.com/sca1b.crl

Certificate Policies:Policy: 2.16.840.1.114412.1.2
Policy: 2.23.140.1.2.1

Authority Information Access:OCSP - URI:http://ocsp.sca1b.amazontrust.com
CA Issuers - URI:http://crt.sca1b.amazontrust.com/sca1b.crt

SCT List:Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
Timestamp : Oct 28 03:00:52.535 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:98:60:37:7E:96:CC:C2:05:E5:5F:09:
34:F5:D8:62:99:ED:D0:C6:E4:A6:81:6B:88:01:A4:67:
7F:02:BD:38:12:02:21:00:A0:DD:9C:97:79:62:49:E3:
5A:73:13:43:D0:F9:88:AC:8C:4F:93:83:F9:E8:6C:5B:
08:52:31:C9:C6:FC:F8:64
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 5C:DC:43:92:FE:E6:AB:45:44:B1:5E:9A:D4:56:E6:10:
37:FB:D5:FA:47:DC:A1:73:94:B2:5E:E6:F6:C7:0E:CA
Timestamp : Oct 28 03:00:52.627 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:C9:36:B1:F9:F4:F7:82:3D:FF:65:A3:
6E:1E:3B:E5:37:2E:72:24:34:37:2B:10:AB:78:73:1F:
13:DA:42:01:C9:02:21:00:9D:19:8E:E7:1B:A1:D7:14:
55:2A:1D:F1:09:01:0D:EA:00:9C:13:ED:99:91:ED:0F:
FC:92:28:C0:04:6C:53:3D
Key Usage:Digital Signature, Key EnciphermentBasic Constraints:CA:FALSESubject Alternative Name:DNS:*.prezi.com
DNS:prezi.com
Show MoreTechnicalDNS LookupA RecordsHostIP AddressClassTTLprezi.com.75.2.83.248IN299prezi.com.99.83.220.209IN299NS RecordsHostNameserverClassTTLprezi.com.ns-1218.awsdns-24.org.IN21599prezi.com.ns-1914.awsdns-47.co.uk.IN21599prezi.com.ns-422.awsdns-52.com.IN21599prezi.com.ns-554.awsdns-05.net.IN21599MX RecordsPriorityHostServerClassTTL1prezi.com.aspmx.l.google.com.IN14910prezi.com.aspmx2.googlemail.com.IN14910prezi.com.aspmx3.googlemail.com.IN1495prezi.com.alt1.aspmx.l.google.com.IN1495prezi.com.alt2.aspmx.l.google.com.IN149SOA RecordsDomain NamePrimary NSResponsible EmailTTLprezi.com.ns-422.awsdns-52.com.awsdns-hostmaster.amazon.com.899TXT RecordsHostValueClassTTLprezi.com.MS=FE317A5F7628D7FDB19799B2977C89BCF07424CFIN149prezi.com.google-site-verification=vNDpSt0JwDpmGqDb973NnwLi75OSokWqbIzRZ5KvJ28IN149prezi.com.v=spf1IN149prezi.com.zf7xczdk5287bv7spzbldgxy4zch353qIN149Show MoreHTTP Response HeadersHTTP-Code:HTTP/1.1 406 Not AcceptableDate:2nd April, 2021Content-Type:text/htmlServer:openresty/1.15.8.2Content-Length:571Connection:keep-aliveX-Frame-Options:DENYShow MoreWhois LookupCreated:24th August, 2000Changed:20th July, 2020Expires:24th August, 2021Registrar:Amazon Registrar, Inc.Status:clientTransferProhibited Client Transfer Prohibited: This status code tells your domain's registry to reject requests to transfer the domain from your current registrar to another. Please refer to the EPP status codes at icann.org for more information." ezimgfmt="rs rscb5 src ng ngcb5">
renewPeriod Renew Period: This grace period is provided after a domain name registration period is explicitly extended (renewed) by the registrar. If the registrar deletes the domain name during this period, the registry provides a credit to the registrar for the cost of the renewal. Please refer to the EPP status codes at icann.org for more information." ezimgfmt="rs rscb5 src ng ngcb5">
Nameservers:ns-1218.awsdns-24.org
ns-1914.awsdns-47.co.uk
ns-422.awsdns-52.com
ns-554.awsdns-05.net
Owner Name:On behalf of prezi.com ownerOwner Organization:Whois Privacy ServiceOwner Street:P.O. Box 81226
Owner Post Code:98108-1226Owner City:SeattleOwner State:WAOwner Country:USOwner Phone:+1.2065771368Owner Email:owner-9409818@prezi.com.whoisprivacyservice.orgAdmin Name:On behalf of prezi.com administrative contactAdmin Organization:Whois Privacy ServiceAdmin Street:P.O. Box 81226
Admin Post Code:98108-1226Admin City:SeattleAdmin State:WAAdmin Country:USAdmin Phone:+1.2065771368Admin Email:admin-9409818@prezi.com.whoisprivacyservice.orgTech Name:On behalf of prezi.com technical contactTech Organization:Whois Privacy ServiceTech Street:P.O. Box 81226
Tech Post Code:98108-1226Tech City:SeattleTech State:WATech Country:USTech Phone:+1.2065771368Tech Email:tech-9409818@prezi.com.whoisprivacyservice.org>> Last update of WHOIS database: 2020-07-20T21:48:52.957Z <<<\r","\r","For more information on Whois status codes, please visit https:\/\/www.icann.org\/resources\/pages\/epp\r","\r","By submitting a query to the Amazon Registrar, Inc. WHOIS database, you agree to abide by the following terms. The data in Amazon Registrar, Inc.s WHOIS database is provided by Amazon Registrar, Inc. for the sole purpose of assisting you in obtaining information about domain name accuracy. You agree to use this data only for lawful purposes and further agree not to use this data for any unlawful purpose or to: (1) enable, allow, or otherwise support the transmission by email, telephone, or facsimile of commercial advertising or unsolicited bulk email, or (2) enable high volume, automated, electronic processes to collect or compile this data for any purpose, including mining this data for your own personal or commercial purposes. Amazon Registrar, Inc. reserves the right to restrict or terminate your access to the data if you fail to abide by these terms of use. Amazon Registrar, Inc. reserves the right to modify these terms at any time.\r","\r","Visit Amazon Registrar, Inc. at https:\/\/registrar.amazon.com\r","Contact information available here: https:\/\/docs.aws.amazon.com\/Route53\/latest\/DeveloperGuide\/domain-contact-support.html\r","\r","\u00a9 2021, Amazon.com, Inc., or its affiliates\r","\r"]])'>View Raw Whois Show MoreNameserversNameIP Addressns-1218.awsdns-24.org205.251.196.194ns-1914.awsdns-47.co.uk205.251.199.122ns-422.awsdns-52.com205.251.193.166ns-554.awsdns-05.net205.251.194.42RelatedSubdomainsSimilar SitesOrganic Search (US) CompetitorsDomainValuationSnoop Scorecoursehero.com$32,985,223 USD5/5quizlet.com$156,900,547 USD5/5enotes.com$1,064,563 USD4/5slideshare.net$76,927,476 USD5/5View all competitors at SEMrushBacklink CompetitorsDomainValuationSnoop Scoremit.edu$34,313,138 USD5/5khanacademy.org$33,087,334 USD5/5ted.com$14,200,132 USD5/5wikispaces.com$14,746 USD3/5slideshare.net$76,927,476 USD5/5View all competitors at SEMrushSites with the same domain nameDomainValuationSnoop Scoreprezi.de$510 USDprezi.it0/5Sites hosted on the same IP addressLove W3 Snoop?Share ThisUpdate NowWant more info on prezi?
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