Umich.edu University of Michigan
A top-ranked public university, the University of Michigan has a tradition of excellence in research, learning and teaching, sports and the arts, and ...
umich.edu Mobile Performance
37/100
These metrics represent real-world Chrome users experience viewing umich.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
First Input Delay
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Largest Contentful Paint0/100 12.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive13/100 13.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
First Contentful Paint23/100 5.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Speed Index41/100 6.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift42/100 0.29
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Total Blocking Time95/100 240 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (17)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Preload key requests
Potential savings of 2,580 ms
2,580 ms
Eliminate render-blocking resources
Potential savings of 1,260 ms
1,260 ms
Remove unused CSS
Potential savings of 14 KiB
300 ms
Serve images in next-gen formats
Potential savings of 65 KiB
300 ms
Defer offscreen images
Potential savings of 46 KiB
300 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
Does not use passive listeners to improve scrolling performance
Avoid `document.write()`
Serve static assets with an efficient cache policy
100 resources found
Minimize main-thread work
4.0 s
Avoid enormous network payloads
Total size was 3,782 KiB
Reduce JavaScript execution time
2.0 s
Avoid chaining critical requests
32 chains found
Avoid large layout shifts
1 element found
Keep request counts low and transfer sizes small
144 requests • 3,782 KiB
Avoid long main-thread tasks
18 long tasks found
Largest Contentful Paint element
1 element found
Passed Audits (12)
Minify JavaScript
Avoids an excessive DOM size
621 elements
Minify CSS
Enable text compression
Preconnect to required origins
Minimize third-party usage
Third-party code blocked the main thread for 120 ms
Remove unused JavaScript
Use video formats for animated content
Efficiently encode images
Initial server response time was short
Root document took 340 ms
Avoid multiple page redirects
Potential savings of 5,820 ms
Properly size images
Potential savings of 10 KiB
umich.edu Mobile SEO
98/100
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)
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
84% appropriately sized tap targets
Passed Audits (12)
Page has successful HTTP status code
Page isn’t blocked from indexing
robots.txt is valid
Document uses legible font sizes
96.54% legible text
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a meta description
Links have descriptive text
Document has a valid `hreflang`
Image elements have `[alt]` attributes
Document avoids plugins
Document has a `<title>` element
Links are crawlable
umich.edu Mobile Best Practices
0/100
These checks highlight opportunities to improve the overall code health of umich.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 (4)
Trust and Safety
Does not use HTTPS
1 insecure request found
Includes front-end JavaScript libraries with known security vulnerabilities
3 vulnerabilities detected
General
Browser errors were logged to the console
Browser Compatibility
Properly defines charset
Passed Audits (10)
Avoids deprecated APIs
Avoids Application Cache
Detected JavaScript libraries
Page has the HTML doctype
Displays images with correct aspect ratio
Serves images with appropriate resolution
Avoids requesting the geolocation permission on page load
Links to cross-origin destinations are safe
Avoids requesting the notification permission on page load
Allows users to paste into password fields
umich.edu Mobile Progressive Web App
25/100
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
Is not configured for a custom splash screen
Installable
Does not use HTTPS
1 insecure request found
Web app manifest does not meet the installability requirements
Does not register a service worker that controls page and `start_url`
Fast and reliable
Page load is not fast enough on mobile networks
Interactive at 13.1 s
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Passed Audits (5)
Provides a valid `apple-touch-icon`
Contains some content when JavaScript is not available
Content is sized correctly for the viewport
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
umich.edu Mobile Accessibility
91/100
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 (3)
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
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
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)
`<html>` element has a valid value for its `[lang]` attribute
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<html>` element has a `[lang]` attribute
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Image elements have `[alt]` attributes
Buttons have an accessible name
`[aria-hidden="true"]` is not present on the document `<body>`
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
ARIA IDs are unique
Form elements have associated labels
Mobile Usability
99/100
These checks validate how easily a visitor can use umich.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 umich.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
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Minify HTML
Passed Audits (6)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify CSS
Minify JavaScript
Prioritize visible content
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