Uscis.gov Home | USCIS
uscis.gov Desktop Performance
40/100
These metrics represent real-world Chrome users experience viewing uscis.gov 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
First Contentful Paint
First Input Delay
Cumulative Layout Shift
Metrics
Largest Contentful Paint1/100 8.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive24/100 6.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index28/100 3.0 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First Contentful Paint58/100 1.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Total Blocking Time72/100 240 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 0.019
Cumulative Layout Shift measures the movement of visible elements within the viewport. 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 4,846 KiB
3,960 ms
Properly size images
Potential savings of 3,302 KiB
2,560 ms
Avoid multiple page redirects
Potential savings of 340 ms
340 ms
Remove unused JavaScript
Potential savings of 390 KiB
320 ms
Remove unused CSS
Potential savings of 13 KiB
80 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Serve static assets with an efficient cache policy
45 resources found
Avoid enormous network payloads
Total size was 9,353 KiB
Ensure text remains visible during webfont load
Minimizes main-thread work
1.9 s
JavaScript execution time
1.0 s
Avoid chaining critical requests
7 chains found
Keep request counts low and transfer sizes small
64 requests • 9,353 KiB
Avoid long main-thread tasks
4 long tasks found
Largest Contentful Paint element
1 element found
Avoid large layout shifts
5 elements found
Passed Audits (14)
Enable text compression
Avoids `document.write()`
Minify JavaScript
Preconnect to required origins
Efficiently encode images
Uses passive listeners to improve scrolling performance
Use video formats for animated content
Eliminate render-blocking resources
Potential savings of 0 ms
Defer offscreen images
Potential savings of 151 KiB
Avoids an excessive DOM size
627 elements
Initial server response time was short
Root document took 20 ms
Minify CSS
Preload key requests
Minimize third-party usage
Third-party code blocked the main thread for 20 ms
uscis.gov 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.
Links do not have descriptive text
4 links found
Document does not have a meta description
Passed Audits (10)
Page isn’t blocked from indexing
robots.txt is valid
Document has a valid `rel=canonical`
Document has a valid `hreflang`
Image elements have `[alt]` attributes
Document avoids plugins
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a `<title>` element
Links are crawlable
Page has successful HTTP status code
uscis.gov Desktop Best Practices
85/100
These checks highlight opportunities to improve the overall code health of uscis.gov 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
Includes front-end JavaScript libraries with known security vulnerabilities
2 vulnerabilities detected
Does not use HTTPS
1 insecure request found
Passed Audits (12)
Allows users to paste into password fields
Avoids requesting the notification permission on page load
No browser errors logged to the console
Links to cross-origin destinations are safe
Avoids Application Cache
Properly defines charset
Detected JavaScript libraries
Avoids deprecated APIs
Avoids requesting the geolocation permission on page load
Serves images with appropriate resolution
Page has the HTML doctype
Displays images with correct aspect ratio
uscis.gov Desktop Progressive Web App
19/100
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
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 33.3 s
PWA Optimized
Manifest doesn't have a maskable icon
Does not provide a valid `apple-touch-icon`
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
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`
Passed Audits (3)
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
uscis.gov Desktop Accessibility
98/100
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)
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (25)
`[role]`s have all required `[aria-*]` attributes
`[role]`s are contained by their required parent element
`[id]` attributes on active, focusable elements are unique
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-*]` attributes match their roles
ARIA IDs are unique
`<html>` element has a `[lang]` attribute
Form elements have associated labels
The page contains a heading, skip link, or landmark region
`[role]` values are valid
No element has a `[tabindex]` value greater than 0
Image elements have `[alt]` attributes
Heading elements appear in a sequentially-descending order
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[aria-*]` attributes are valid and not misspelled
Document has a `<title>` element
`[aria-*]` attributes have valid values
`<html>` element has a valid value for its `[lang]` attribute
`[lang]` attributes have a valid value
Buttons have an accessible name
Links have a discernible name
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[aria-hidden="true"]` is not present on the document `<body>`
`[aria-hidden="true"]` elements do not contain focusable descendents
Desktop Speed
52/100
These checks analyze the performance of uscis.gov 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 (6)
Optimize images
Leverage browser caching
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Avoid landing page redirects
Enable compression
Minify JavaScript
Passed Audits (4)
Reduce server response time
Minify CSS
Minify HTML
Prioritize visible content
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