Lighthouse Mobile
· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.Detailed Report
Audit breakdown by category with detailed findings.
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Performance issues directly impact user engagement and conversion rates.
A long cache lifetime can speed up repeat visits to your page. Learn more about caching.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Performance issues directly impact user engagement and conversion rates.
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Performance issues directly impact user engagement and conversion rates.
A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.
Performance issues directly impact user engagement and conversion rates.
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
Performance issues directly impact user engagement and conversion rates.
Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| /d9/css/css_UFGmUIixkB6s3FQx7QRs6MGi2nz5hjbalX3jXf5knrE.c... | 130.2 KiB | 2.9 s |
| fonts.googleapis.com/css2?family=Source+Serif+Pro:wght@600;700&display=swap | 1.1 KiB | 784 ms |
| cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.css | 1.2 KiB | 783 ms |
| /d9/css/css_Y4jKR1JZRfWHHYJIAcc7Qs6x6Hlj50eoxWWyNmMI5QM.c... | 2.6 KiB |
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
DOJ Building and Flag div.hero-image__field-wrp > div > div.field-formatter--media-thumbnail > img | www.justice.gov/d9/2022-09/hero_doj_flag.png | 973.3 KiB | 961.2 KiB |
Department of Justice flag in front of DOJ building div.grouped-content-image > div > div.field-formatter--media-thumbnail > img | /d9/styles/featured_group_content_image/public/2022-11/ou... | 354.0 KiB | 340.4 KiB |
Photograph of Anibal Alexander Canelon Aguirre li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/anibal-alexander-canelon-aguirre/@@images/image | 193.9 KiB | 173.1 KiB |
DOJ organizational chart div.grouped-content-image > div > div.field-formatter--media-thumbnail > img | /d9/styles/featured_group_content_image/public/2022-11/ou... | 95.2 KiB | 79.8 KiB |
Photograph of Trung Duc Lu li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/trung-duc-lu/@@images/image | 20.9 KiB | 16.4 KiB |
Photograph of Ruja Ignatova li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/ruja-ignatova/@@images/image | 19.4 KiB | 14.5 KiB |
Photograph of Yulan Adonay Archaga Carias li#slick-slide110 > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/yulan-adonay-archaga-carias/@@images/image | 18.1 KiB | 12.8 KiB |
Photograph of Giovanni Vicente Mosquera Serrano li#slick-slide18 > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/giovanni-vicente-mosquera-serrano/@@images/image | 17.5 KiB | 11.0 KiB |
Photograph of Wilver Villegas-Palomino li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/wilver-villegas-palomino/@@images/image | 16.8 KiB | 10.1 KiB |
Photograph of Kashawn Nicola Roper li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/kashawn-nicola-roper/@@images/image | 19.5 KiB | 10.0 KiB |
Photograph of Bhadreshkumar Chetanbhai Patel li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/bhadreshkumar-chetanbhai-patel/@@images/image | 16.0 KiB | 8.3 KiB |
Photograph of Fausto Isidro Meza-Flores li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/fausto-isidro-meza-flores/@@images/image | 12.9 KiB | 7.8 KiB |
Photograph of Omar Alexander Cardenas li.slick-slide > div.views-field > div.field-content > img | www.fbi.gov/wanted/topten/omar-alexander-cardenas/@@images/image | 14.6 KiB | 6.3 KiB |
div.media > div.field-formatter--oembed > div.field_media_oembed_video > iframe.media-oembed-content div.media > div.field-formatter--oembed > div.field_media_oembed_video > iframe.media-oembed-content | /C9Rpv8PNOWPB5K5XtxcZtmBeJs64tfxU16v0X_ioS8djiNUAcmIeE0uZ... | 5.5 KiB | 5.3 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| justice.gov/ | 758 ms |
| www.justice.gov/ | 0.0 ms |
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.
Performance issues directly impact user engagement and conversion rates.
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.
Performance issues directly impact user engagement and conversion rates.
Diagnostics
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /d9/css/css_UFGmUIixkB6s3FQx7QRs6MGi2nz5hjbalX3jXf5knrE.c... | 129.9 KiB | 115.6 KiB |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 147.0 KiB | 60.1 KiB |
| /d9/js/js_hTnaoOtM4X5XoPAr28zmLSvrLdw6doGAVmviXmhZOGY.js?... | 55.5 KiB | 36.4 KiB |
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.
Performance issues directly impact user engagement and conversion rates.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| /d9/js/js_G8WsNmfSYUp5mpsAGVNXTFMZBWaZ2QZoXN6FK4gEmO8.js?... | 3.9 s | 1.2 s | 17 ms |
| www.justice.gov/ | 3.1 s | 5.4 ms | 0.9 ms |
| Unattributable | 2.2 s | 20 ms | 0.0 ms |
| /d9/js/js_hTnaoOtM4X5XoPAr28zmLSvrLdw6doGAVmviXmhZOGY.js?... | 681 ms | 128 ms | 50 ms |
| www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 332 ms | 279 ms | 51 ms |
| www.youtube.com/s/player/b174a5bb/www-widgetapi.vflset/www-widgetapi.js | 154 ms | 88 ms | 17 ms |
| /d9/css/css_UFGmUIixkB6s3FQx7QRs6MGi2nz5hjbalX3jXf5knrE.c... | 151 ms | 0.0 ms | 0.0 ms |
| dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js | 142 ms | 134 ms | 2.1 ms |
| /Universal-Federated-Analytics-Min.js?agency=DOJ&sp=find&... | 97 ms | 82 ms | 3.8 ms |
| siteimproveanalytics.com/js/siteanalyze_8906.js | 82 ms | 69 ms | 7.6 ms |
| /media/oembed?url=https%3A//youtu.be/rxV57JxoK-8&max_widt... | 55 ms | 0.2 ms | 0.0 ms |
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Other | 3.6 s |
| Rendering | 3.2 s |
| Script Evaluation | 2.0 s |
| Style & Layout | 1.6 s |
| Parse HTML & CSS | 402 ms |
| Script Parsing & Compilation | 164 ms |
| Garbage Collection | 108 ms |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
U.S. Department of Justice seal div#logo > em.usa-logo__text > a.logo-img > img | www.justice.gov/themes/custom/usdoj_uswds/images/doj-main-header-logo.svg |
U.S. Department of Justice seal div.grid-container > div.blocks-wrapper > p.text-center > img | www.justice.gov/themes/custom/usdoj_uswds/images/doj-main-header-logo.svg |
header.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag header.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag | www.justice.gov/themes/custom/usdoj_uswds/assets/img/us_flag_small.png |
open menu icon span.menu-label > span.menu-label--icons > span.menu-label--icons__open > img | www.justice.gov/themes/custom/usdoj_uswds/images/doj-icon-hamburger-menu.svg |
instagram icon ul.inline-list > li > a > img.social-icon | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
Search form.usa-search > div.width-full > button.usa-button > img | www.justice.gov/themes/custom/usdoj_uswds/images/doj-icon-header-search.svg |
smartphone icon ul.usa-icon-list > li.usa-icon-list__item > div.usa-icon-list__icon > img | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
smartphone icon ul.usa-icon-list > li.usa-icon-list__item > div.usa-icon-list__icon > img | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
linkedin icon ul.inline-list > li > a > img.social-icon | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
envelope icon ul.usa-icon-list > li.usa-icon-list__item > div.usa-icon-list__icon > img | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
twitter icon ul.inline-list > li > a > img.social-icon | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
youtube icon ul.inline-list > li > a > img.social-icon | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
facebook icon ul.inline-list > li > a > img.social-icon | /themes/custom/usdoj_uswds/images/doj-header-footer-icons... |
More information about the performance of your application. These numbers don't directly affect the Performance score.
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Tables and lists
Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Kun Jiang
DEA Field Office: New York Southern
Wanted For: Fentanyl importation … div > div.most-wanted-view > div.item-list > ul.slick-initialized |
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Best Practices
General
Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
www.youtube.com/s/player/b174a5bb/www-widgetapi.vflset/www-widgetapi.js line 192, col 189 | Uncaught Error: YouTube player element ID required. |
SEO
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.