T.co t.co / Twitter
t.co Desktop Performance
100/100
These metrics represent real-world Chrome users experience viewing t.co 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
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
First Contentful Paint
Metrics
Total Blocking Time100/100 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Time to Interactive100/100 0.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index100/100 0.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
First Contentful Paint100/100 0.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint100/100 0.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Should Fix (4)
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid `document.write()`
Keep request counts low and transfer sizes small
3 requests • 3 KiB
Avoid chaining critical requests
1 chain found
Largest Contentful Paint element
1 element found
Passed Audits (22)
Avoids enormous network payloads
Total size was 3 KiB
Enable text compression
Efficiently encode images
Minify CSS
Avoid multiple page redirects
Potential savings of 190 ms
JavaScript execution time
Preload key requests
Properly size images
Serve images in next-gen formats
Use video formats for animated content
Remove unused JavaScript
Defer offscreen images
Remove unused CSS
Minify JavaScript
All text remains visible during webfont loads
Avoids an excessive DOM size
20 elements
Minimizes main-thread work
0.0 s
Uses passive listeners to improve scrolling performance
Initial server response time was short
Root document took 30 ms
Preconnect to required origins
Uses efficient cache policy on static assets
0 resources found
Eliminate render-blocking resources
t.co Desktop SEO
64/100
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 (4)
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
Links do not have descriptive text
1 link found
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Page is blocked from indexing
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.
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Passed Audits (7)
Image elements have `[alt]` attributes
robots.txt is valid
Page has successful HTTP status code
Document avoids plugins
Document has a `<title>` element
Links are crawlable
Document has a valid `hreflang`
t.co Desktop Best Practices
85/100
These checks highlight opportunities to improve the overall code health of t.co 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)
Trust and Safety
Does not use HTTPS
1 insecure request found
Browser Compatibility
Page lacks the HTML doctype, thus triggering quirks-mode
Passed Audits (12)
Links to cross-origin destinations are safe
Avoids requesting the notification permission on page load
Properly defines charset
Avoids deprecated APIs
No browser errors logged to the console
Allows users to paste into password fields
Serves images with appropriate resolution
Displays images with correct aspect ratio
Avoids requesting the geolocation permission on page load
Detected JavaScript libraries
Avoids Application Cache
Avoids front-end JavaScript libraries with known security vulnerabilities
t.co Desktop Progressive Web App
37/100
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 (10)
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
PWA Optimized
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not provide a valid `apple-touch-icon`
Does not set a theme color for the address bar.
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`
Passed Audits (3)
Page load is fast enough on mobile networks
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
t.co Desktop Accessibility
74/100
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)
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
Navigation
These are opportunities to improve keyboard navigation in your application.
The page does not contain a heading, skip link, or landmark region
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (4)
Image elements have `[alt]` attributes
`[aria-hidden="true"]` is not present on the document `<body>`
Document has a `<title>` element
Links have a discernible name
Desktop Speed
99/100
These checks analyze the performance of t.co 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 (1)
Leverage browser caching
Passed Audits (9)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Optimize images
Prioritize visible content
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