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academia.edu Desktop Performance
92/100
These metrics represent real-world Chrome users experience viewing academia.edu web page. 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 Input Delay
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Cumulative Layout Shift34/100 0.336
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
First Contentful Paint91/100 0.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint92/100 1.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index96/100 1.1 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive98/100 1.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time100/100 40 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (10)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Avoid multiple page redirects
Potential savings of 380 ms
380 ms
Remove unused JavaScript
Potential savings of 323 KiB
380 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Ensure text remains visible during webfont load
Serve static assets with an efficient cache policy
10 resources found
Largest Contentful Paint element
1 element found
Keep request counts low and transfer sizes small
39 requests • 639 KiB
Avoid large layout shifts
5 elements found
Avoid chaining critical requests
8 chains found
Avoid long main-thread tasks
2 long tasks found
User Timing marks and measures
5 user timings
Passed Audits (20)
Defer offscreen images
Eliminate render-blocking resources
Potential savings of 40 ms
Use video formats for animated content
Avoids `document.write()`
Efficiently encode images
Enable text compression
Initial server response time was short
Root document took 180 ms
Serve images in next-gen formats
Preconnect to required origins
Avoids an excessive DOM size
146 elements
Remove unused CSS
Potential savings of 29 KiB
Uses passive listeners to improve scrolling performance
Minify CSS
Avoids enormous network payloads
Total size was 639 KiB
Preload key requests
Minimizes main-thread work
0.7 s
JavaScript execution time
0.3 s
Properly size images
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Minify JavaScript
academia.edu Desktop SEO
83/100
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)
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Page is blocked from indexing
Passed Audits (10)
Document avoids plugins
robots.txt is valid
Document has a meta description
Links are crawlable
Page has successful HTTP status code
Document has a `<title>` element
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Links have descriptive text
Document has a valid `hreflang`
Document has a valid `rel=canonical`
academia.edu Desktop Best Practices
85/100
These checks highlight opportunities to improve the overall code health of academia.edu 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 (2)
General
Browser errors were logged to the console
Trust and Safety
Does not use HTTPS
2 insecure requests found
Passed Audits (12)
Detected JavaScript libraries
Avoids Application Cache
Avoids deprecated APIs
Avoids front-end JavaScript libraries with known security vulnerabilities
Displays images with correct aspect ratio
Links to cross-origin destinations are safe
Avoids requesting the notification permission on page load
Page has the HTML doctype
Serves images with appropriate resolution
Allows users to paste into password fields
Avoids requesting the geolocation permission on page load
Properly defines charset
academia.edu Desktop Progressive Web App
48/100
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 (8)
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
PWA Optimized
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Installable
Does not use HTTPS
2 insecure requests found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Passed Audits (5)
Contains some content when JavaScript is not available
Page load is fast enough on mobile networks
Provides a valid `apple-touch-icon`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
academia.edu Desktop Accessibility
81/100
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 (2)
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.
Image elements do not have `[alt]` attributes
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (12)
The page contains a heading, skip link, or landmark region
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`<html>` element has a `[lang]` attribute
Document has a `<title>` element
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`<html>` element has a valid value for its `[lang]` attribute
`[aria-hidden="true"]` elements do not contain focusable descendents
Links have a discernible name
Buttons have an accessible name
Heading elements appear in a sequentially-descending order
`[aria-hidden="true"]` is not present on the document `<body>`
Desktop Speed
80/100
These checks analyze the performance of academia.edu on desktop devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (3)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Avoid landing page redirects
Leverage browser caching
Passed Audits (7)
Enable compression
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Optimize images
Prioritize visible content
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