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slideshare.net Mobile Performance
60/100
These metrics represent real-world Chrome users experience viewing slideshare.net on mobile devices. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
User Loading Experience
First Contentful Paint
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
Metrics
Largest Contentful Paint15/100 5.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive67/100 5.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
First Contentful Paint68/100 3.3 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Speed Index69/100 4.7 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Total Blocking Time84/100 340 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (14)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 1,180 ms
1,180 ms
Avoid multiple page redirects
Potential savings of 1,110 ms
1,110 ms
Remove unused JavaScript
Potential savings of 62 KiB
300 ms
Remove unused CSS
Potential savings of 28 KiB
270 ms
Reduce initial server response time
Root document took 850 ms
250 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Reduce the impact of third-party code
Third-party code blocked the main thread for 410 ms
Ensure text remains visible during webfont load
Minimize main-thread work
2.3 s
Uses efficient cache policy on static assets
5 resources found
JavaScript execution time
1.0 s
Avoid long main-thread tasks
6 long tasks found
Avoid chaining critical requests
7 chains found
Keep request counts low and transfer sizes small
25 requests • 377 KiB
Largest Contentful Paint element
1 element found
Passed Audits (14)
Properly size images
Potential savings of 4 KiB
Uses passive listeners to improve scrolling performance
Preload key requests
Avoids `document.write()`
Preconnect to required origins
Minify CSS
Avoids an excessive DOM size
600 elements
Avoids enormous network payloads
Total size was 377 KiB
Minify JavaScript
Efficiently encode images
Defer offscreen images
Use video formats for animated content
Serve images in next-gen formats
Potential savings of 28 KiB
Enable text compression
slideshare.net Mobile SEO
88/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Should Fix (2)
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Tap targets are not sized appropriately
35% appropriately sized tap targets
Passed Audits (12)
Document has a valid `rel=canonical`
Page isn’t blocked from indexing
Document has a `<title>` element
Document avoids plugins
Document uses legible font sizes
99.17% legible text
Document has a meta description
Image elements have `[alt]` attributes
Links have descriptive text
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a valid `hreflang`
Page has successful HTTP status code
robots.txt is valid
slideshare.net Mobile Best Practices
54/100
These checks highlight opportunities to improve the overall code health of slideshare.net mobile page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (6)
User Experience
Serves images with low resolution
Displays images with incorrect aspect ratio
General
Browser errors were logged to the console
Trust and Safety
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Passed Audits (8)
Avoids Application Cache
Detected JavaScript libraries
Avoids requesting the geolocation permission on page load
Allows users to paste into password fields
Avoids deprecated APIs
Avoids requesting the notification permission on page load
Page has the HTML doctype
Properly defines charset
slideshare.net Mobile Progressive Web App
46/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (9)
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Does not register a service worker that controls page and `start_url`
PWA Optimized
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not provide a valid `apple-touch-icon`
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Passed Audits (5)
Redirects HTTP traffic to HTTPS
Content is sized correctly for the viewport
Page load is fast enough on mobile networks
Contains some content when JavaScript is not available
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
slideshare.net Mobile Accessibility
84/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (5)
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
`[aria-*]` attributes do not have valid values
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (22)
`<html>` element has a valid value for its `[lang]` attribute
`[id]` attributes on active, focusable elements are unique
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
Document has a `<title>` element
`[aria-*]` attributes match their roles
`[aria-*]` attributes are valid and not misspelled
`[lang]` attributes have a valid value
`[aria-hidden="true"]` elements do not contain focusable descendents
Form elements have associated labels
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Buttons have an accessible name
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[role]`s are contained by their required parent element
Image elements have `[alt]` attributes
`<html>` element has a `[lang]` attribute
`[role]`s have all required `[aria-*]` attributes
ARIA IDs are unique
`[role]` values are valid
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Mobile Usability
94/100
These checks validate how easily a visitor can use slideshare.net on a mobile device. Test results include a list of any mobile usability problems. Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen).
Should Fix (2)
Size content to viewport
Size tap targets appropriately
Passed Audits (3)
Avoid plugins
Configure the viewport
Use legible font sizes
Mobile Speed
42/100
These checks analyze the performance of slideshare.net on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (6)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Reduce server response time
Avoid landing page redirects
Optimize images
Prioritize visible content
Leverage browser caching
Passed Audits (4)
Enable compression
Minify CSS
Minify HTML
Minify JavaScript
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