Mit.edu MIT - Massachusetts Institute of Technology
mit.edu Mobile Performance
63/100
These metrics represent real-world Chrome users experience viewing mit.edu 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
Cumulative Layout Shift
Largest Contentful Paint
First Contentful Paint
First Input Delay
Metrics
Largest Contentful Paint20/100 5.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive45/100 7.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time64/100 490 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
First Contentful Paint99/100 1.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Speed Index100/100 1.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Should Fix (15)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 200 KiB
1,200 ms
Remove unused JavaScript
Potential savings of 208 KiB
1,200 ms
Enable text compression
Potential savings of 218 KiB
1,050 ms
Efficiently encode images
Potential savings of 131 KiB
750 ms
Eliminate render-blocking resources
Potential savings of 250 ms
250 ms
Remove unused CSS
Potential savings of 24 KiB
150 ms
Properly size images
Potential savings of 28 KiB
150 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
Minimize main-thread work
2.3 s
JavaScript execution time
1.3 s
Avoid long main-thread tasks
6 long tasks found
Keep request counts low and transfer sizes small
25 requests • 838 KiB
Avoid chaining critical requests
6 chains found
Largest Contentful Paint element
1 element found
Passed Audits (13)
Preconnect to required origins
Defer offscreen images
Avoid multiple page redirects
Potential savings of 630 ms
Minify JavaScript
Preload key requests
Uses passive listeners to improve scrolling performance
Use video formats for animated content
Initial server response time was short
Root document took 100 ms
Avoids `document.write()`
Minify CSS
Avoids an excessive DOM size
373 elements
Minimize third-party usage
Third-party code blocked the main thread for 70 ms
Avoids enormous network payloads
Total size was 838 KiB
mit.edu Mobile SEO
92/100
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 (1)
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Document does not have a meta description
Passed Audits (12)
Page has successful HTTP status code
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Image elements have `[alt]` attributes
Links have descriptive text
Page isn’t blocked from indexing
Document uses legible font sizes
100% legible text
Document has a `<title>` element
Links are crawlable
Document has a valid `hreflang`
Tap targets are sized appropriately
100% appropriately sized tap targets
robots.txt is valid
Document avoids plugins
mit.edu Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of mit.edu 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 (3)
General
Browser errors were logged to the console
Trust and Safety
Does not use HTTPS
17 insecure requests found
Links to cross-origin destinations are unsafe
Passed Audits (11)
Displays images with correct aspect ratio
Avoids front-end JavaScript libraries with known security vulnerabilities
Allows users to paste into password fields
Avoids requesting the notification permission on page load
Page has the HTML doctype
Serves images with appropriate resolution
Detected JavaScript libraries
Avoids Application Cache
Avoids deprecated APIs
Avoids requesting the geolocation permission on page load
Properly defines charset
mit.edu Mobile Progressive Web App
43/100
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)
PWA Optimized
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Does not redirect HTTP traffic to HTTPS
Is not configured for a custom splash screen
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Installable
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Does not use HTTPS
17 insecure requests found
Passed Audits (5)
Provides a valid `apple-touch-icon`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
Page load is fast enough on mobile networks
Content is sized correctly for the viewport
mit.edu Mobile Accessibility
99/100
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 (1)
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Passed Audits (24)
Links have a discernible name
Form elements have associated labels
Image elements have `[alt]` attributes
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA IDs are unique
`[role]`s have all required `[aria-*]` attributes
The page contains a heading, skip link, or landmark region
Document has a `<title>` element
`[aria-*]` attributes match their roles
Background and foreground colors have a sufficient contrast ratio
`[aria-*]` attributes are valid and not misspelled
`[aria-hidden="true"]` is not present on the document `<body>`
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`<html>` element has a `[lang]` attribute
No element has a `[tabindex]` value greater than 0
`[aria-hidden="true"]` elements do not contain focusable descendents
`[role]` values are valid
Buttons have an accessible name
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`<html>` element has a valid value for its `[lang]` attribute
`[aria-*]` attributes have valid values
`[id]` attributes on active, focusable elements are unique
`[role]`s are contained by their required parent element
Mobile Usability
99/100
These checks validate how easily a visitor can use mit.edu 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 (1)
Size tap targets appropriately
Passed Audits (4)
Avoid plugins
Configure the viewport
Size content to viewport
Use legible font sizes
Mobile Speed
64/100
These checks analyze the performance of mit.edu 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 (4)
Optimize images
Leverage browser caching
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Enable compression
Passed Audits (6)
Avoid landing page redirects
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Prioritize visible content
www.mit.com
www.mit.net
www.mit.org
www.mit.info
www.mit.biz
www.mit.us
www.mit.mobi
www.it.edu
www.mit.edu
www.nit.edu
www.mnit.edu
www.nmit.edu
www.jit.edu
www.mjit.edu
www.jmit.edu
www.kit.edu
www.mkit.edu
www.kmit.edu
www.mt.edu
www.mut.edu
www.miut.edu
www.muit.edu
www.mjt.edu
www.mijt.edu
www.mkt.edu
www.mikt.edu
www.mot.edu
www.miot.edu
www.moit.edu
www.mi.edu
www.mir.edu
www.mitr.edu
www.mirt.edu
www.mif.edu
www.mitf.edu
www.mift.edu
www.mig.edu
www.mitg.edu
www.migt.edu
www.miy.edu
www.mity.edu
www.miyt.edu
www.mit.net
www.mit.org
www.mit.info
www.mit.biz
www.mit.us
www.mit.mobi
www.it.edu
www.mit.edu
www.nit.edu
www.mnit.edu
www.nmit.edu
www.jit.edu
www.mjit.edu
www.jmit.edu
www.kit.edu
www.mkit.edu
www.kmit.edu
www.mt.edu
www.mut.edu
www.miut.edu
www.muit.edu
www.mjt.edu
www.mijt.edu
www.mkt.edu
www.mikt.edu
www.mot.edu
www.miot.edu
www.moit.edu
www.mi.edu
www.mir.edu
www.mitr.edu
www.mirt.edu
www.mif.edu
www.mitf.edu
www.mift.edu
www.mig.edu
www.mitg.edu
www.migt.edu
www.miy.edu
www.mity.edu
www.miyt.edu