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.
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 | |
|---|---|---|---|
Hurricane Isaias Safety li > div.views-field > div.field-content > img | /s3fs-public/Carousel_HurricaneCloud-2_0.jpg?VersionId=lV... | 1.0 MiB | 963.4 KiB |
Woman with a sewing machine div.grid-row > div.tablet:grid-col-6 > div.left-image > img.homepage__section-image | www.cpsc.gov/s3fs-public/2024-09/CPSC_small-business.jpg | 724.1 KiB | 706.3 KiB |
Safety Alert Poster for Water Beads div.grid-row > div.tablet:grid-col-6 > div.right-image > img.homepage__section-image | /s3fs-public/SafetyAlert_5101_WaterBeads_082024.jpg?Versi... | 662.8 KiB | 653.8 KiB |
Consumer Product Safety Commission Never miss a recall div#prefix-overlay-outer > div.prefix-overlay-inner > div#prefix-overlay-header > img | /attachments/fancy_images/USCPSC/2022/02/5552967/recall-i... | 142.9 KiB | 139.9 KiB |
CPSC logo div.grid-row > div.desktop:grid-col-4 > div.usa-footer__footer-img > img | www.cpsc.gov/sites/default/themes/cpsc/assets/images/cpsc_logo_text.png | 98.4 KiB | 95.8 KiB |
Never leave squishy toys in hot cars div.grid-row > div.grid-col > div.left-image > img.homepage__section-image | /s3fs-public/2026-08/squishy-gloved-hand-film-shoot.jpg?V... | 92.1 KiB | 84.3 KiB |
Image of OCOOPA Rechargeable Hand Warmers – models div.grid-row > div.tablet:grid-col-6 > div.left-image > img.homepage__section-image | www.cpsc.gov/s3fs-public/ocoopa-1.jpg?VersionId=Rr8I364LVGQ9pZGrDJSnzBhfYgcQXK87 | 78.1 KiB | 73.3 KiB |
Walmart Recalled Grill Brush li.flex-active-slide > div.views-field > div.field-content > img | /s3fs-public/Carousel_GrillBrush.png?VersionId=s0Pkq7iEiL... | 152.5 KiB | 72.5 KiB |
CPSC Logo li > div.views-field > div.field-content > img | /s3fs-public/CPSClogo_Carousel_9-7-21_5.png?VersionId=cfa... | 100.0 KiB | 64.7 KiB |
CPSC logo a > div.seal-container > div.logo-img > img | www.cpsc.gov/sites/default/themes/cpsc/assets/images/cpsc_logo.png | 44.6 KiB | 44.2 KiB |
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
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.
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
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.
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 |
|---|---|
| cpsc.gov/ | 763 ms |
| www.cpsc.gov/ | 0.0 ms |
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
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.cpsc.gov/sites/default/themes/cpsc/assets/css/style.css?tmt0ip | 58.0 KiB | 6.4 KiB |
| www.cpsc.gov/core/modules/system/css/components/hidden.module.css?tmt0ip | 2.8 KiB | 2.1 KiB |
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 |
|---|---|---|
| cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/css/uswds.min.css | 54.9 KiB | 53.8 KiB |
| www.cpsc.gov/sites/default/themes/cpsc/assets/css/style.css?tmt0ip | 55.9 KiB | 52.0 KiB |
| www.cpsc.gov/sites/default/libraries/fontawesome/css/all.min.css?tmt0ip | 21.9 KiB | 21.6 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-55LVJ78J3V&cx=c>m=4e6a91 | 178.1 KiB | 121.2 KiB |
| www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 161.6 KiB | 116.5 KiB |
| www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c>m=4e6a91 | 178.6 KiB | 73.2 KiB |
| www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V | 178.1 KiB | 72.5 KiB |
| www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c>m=4e6a91 | 161.6 KiB | 69.0 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-T559BS6V | 88.6 KiB | 51.0 KiB |
| content.govdelivery.com/overlay/js/11021.js | 74.6 KiB | 36.4 KiB |
| static.addtoany.com/menu/modules/core.iho16r34.js | 25.4 KiB | 20.7 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 |
|---|---|---|---|
| www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V | 566 ms | 242 ms | 50 ms |
| Unattributable | 545 ms | 12 ms | 0.0 ms |
| www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c>m=4e6a91 | 418 ms | 298 ms | 73 ms |
| www.cpsc.gov/ | 349 ms | 11 ms | 4.0 ms |
| www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c>m=4e6a91 | 255 ms | 218 ms | 36 ms |
| content.govdelivery.com/overlay/js/11021.js | 209 ms | 146 ms | 28 ms |
| cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/js/uswds.min.js | 191 ms | 38 ms | 9.3 ms |
| www.googletagmanager.com/gtm.js?id=GTM-T559BS6V | 132 ms | 95 ms | 23 ms |
| www.cpsc.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 | 114 ms | 75 ms | 8.5 ms |
| dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js | 86 ms | 83 ms | 1.0 ms |
| www.cpsc.gov/core/misc/drupal.init.js?v=10.6.17 | 77 ms | 41 ms | 0.2 ms |
| www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V&cx=c>m=4e6a91 | 71 ms | 28 ms | 43 ms |
| www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 64 ms | 23 ms | 41 ms |
| www.cpsc.gov/sites/default/themes/cpsc/assets/css/style.css?tmt0ip | 64 ms | 0.0 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 |
|---|---|
| Script Evaluation | 1.4 s |
| Other | 801 ms |
| Style & Layout | 677 ms |
| Script Parsing & Compilation | 347 ms |
| Parse HTML & CSS | 156 ms |
| Rendering | 30 ms |
| Garbage Collection | 28 ms |
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.cpsc.gov/core/misc/drupal.js?v=10.6.17 | 6.1 KiB | 4.8 KiB |
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 | |
|---|---|
Safety Alert Poster for Water Beads div.grid-row > div.tablet:grid-col-6 > div.right-image > img.homepage__section-image | /s3fs-public/SafetyAlert_5101_WaterBeads_082024.jpg?Versi... |
Woman with a sewing machine div.grid-row > div.tablet:grid-col-6 > div.left-image > img.homepage__section-image | www.cpsc.gov/s3fs-public/2024-09/CPSC_small-business.jpg |
Never leave squishy toys in hot cars div.grid-row > div.grid-col > div.left-image > img.homepage__section-image | /s3fs-public/2026-08/squishy-gloved-hand-film-shoot.jpg?V... |
Image of OCOOPA Rechargeable Hand Warmers – models div.grid-row > div.tablet:grid-col-6 > div.left-image > img.homepage__section-image | www.cpsc.gov/s3fs-public/ocoopa-1.jpg?VersionId=Rr8I364LVGQ9pZGrDJSnzBhfYgcQXK87 |
Consumer Product Safety Commission Never miss a recall div#prefix-overlay-outer > div.prefix-overlay-inner > div#prefix-overlay-header > img | /attachments/fancy_images/USCPSC/2022/02/5552967/recall-i... |
CPSC logo div.grid-row > div.desktop:grid-col-4 > div.usa-footer__footer-img > img | www.cpsc.gov/sites/default/themes/cpsc/assets/images/cpsc_logo_text.png |
CPSC logo a > div.seal-container > div.logo-img > img | www.cpsc.gov/sites/default/themes/cpsc/assets/images/cpsc_logo.png |
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 | cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/img/us_flag_small.png |
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.
ARIA
ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.
Informational: a Permissions-Policy directive showing feature -> allowed origins.
Source: MDN Permissions-Policy
| Failing Elements |
|---|
Close subscription dialog
Sign up below to get the latest news, updates, and r… body > div#scopedByScopedPolyfill_1 > div#prefix-overlay-outer |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of 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.googletagmanager.com/gtag/js?id=G-55LVJ78J3V line 341, col 390 | Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-55LVJ78J3V>m=45je6a91v9120486628za208xf1&_p=1791907596457&gcd=13l3l3l2l3l1&npa=1&dma_cps=a&dma=1&gdid=dMDhkMT&cid=935963711.1791907597&frm=0&ngs=1&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Not%2520A(Brand%3B99.0.0.0%7CChromium%3B154.0.8037.92&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616986~115938466~115938469~118897920~118897930~120213116~120385422~120469145~120469153~121046263~121046271~121246026~121246034&sid=1791907596&sct=1&seg=0&dl=https%3A%2F%2Fwww.cpsc.gov%2F&dt=CPSC.gov&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.page_placeholder=PLACEHOLDER_page_location&tfd=626' violates the following Content Security Policy directive: "connect-src 'self' https://vod.cpsc.gov https://m.addthis.com https://www.google-analytics.com https://www.saferproducts.gov https://stats.addtoany.com https://public.govdelivery.com https://analytics.google.com https://*.hotjar.com https://*.hotjar.io wss://*.hotjar.com". The action has been blocked. |
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c>m=4e6a91 line 277, col 390 | Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-CSLL4ZEK4L>m=45je6a91v9131934939za208xf1&_p=1791907596457&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&gdid=dMDhkMT&cid=935963711.1791907597&frm=0&ngs=1&pscdl=noapi&rcb=6&sr=412x823&uaa=&uab=64&uafvl=Not%2520A(Brand%3B99.0.0.0%7CChromium%3B154.0.8037.92&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115938466~115938468~118897920~118897930~120213116~120385423~120469145~120469153~121046263~121046271~121246026~121246034&dl=https%3A%2F%2Fcpsc.gov%2F&dt=CPSC.gov&dr=&sid=1791907597&sct=1&seg=0&_tu=wA&en=page_view&_fv=1&_ss=1&_ee=1&ep.agency=UNSPECIFIED%3ACPSC.GOV&ep.subagency=CPSC.GOV&ep.site_topic=unspecified%3Acpsc.gov&ep.site_platform=unspecified%3Acpsc.gov&ep.script_source=https%3A%2F%2Fdap.digitalgov.gov%2Funiversal-federated-analytics-min.js&ep.version=20260107%20v8.8%20-%20ga4&ep.protocol=https%3A&ep.using_parallel_tracker=no&ep.hostname_dimension=cpsc.gov&tfd=1261' violates the following Content Security Policy directive: "connect-src 'self' https://vod.cpsc.gov https://m.addthis.com https://www.google-analytics.com https://www.saferproducts.gov https://stats.addtoany.com https://public.govdelivery.com https://analytics.google.com https://*.hotjar.com https://*.hotjar.io wss://*.hotjar.com". The action has been blocked. |
www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c>m=4e6a91 line 343, col 390 | Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-XM65T6P0GR>m=45je6a91v9127324351za208xf1&_p=1791907596457&gcd=13l3l3l2l3l1&npa=1&dma_cps=a&dma=1&gdid=dMDhkMT&cid=935963711.1791907597&frm=0&ngs=1&pscdl=noapi&rcb=15&sr=412x823&uaa=&uab=64&uafvl=Not%2520A(Brand%3B99.0.0.0%7CChromium%3B154.0.8037.92&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616985~115938466~115938468~118897920~118897930~120213116~120385422~120469145~120469153~121046263~121046271~121246026~121246034&sid=1791907596&sct=1&seg=0&dl=https%3A%2F%2Fwww.cpsc.gov%2F&dt=CPSC.gov&en=page_view&_fv=1&_ss=1&_ee=1&ep.page_placeholder=PLACEHOLDER_page_location&tfd=821' violates the following Content Security Policy directive: "connect-src 'self' https://vod.cpsc.gov https://m.addthis.com https://www.google-analytics.com https://www.saferproducts.gov https://stats.addtoany.com https://public.govdelivery.com https://analytics.google.com https://*.hotjar.com https://*.hotjar.io wss://*.hotjar.com". The action has been blocked. |
www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V line 341, col 390 | Fetch API cannot load https://region1.google-analytics.com/g/collect?v=2&tid=G-55LVJ78J3V>m=45je6a91v9120486628za208xf1&_p=1791907596457&gcd=13l3l3l2l3l1&npa=1&dma_cps=a&dma=1&gdid=dMDhkMT&cid=935963711.1791907597&frm=0&ngs=1&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Not%2520A(Brand%3B99.0.0.0%7CChromium%3B154.0.8037.92&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616986~115938466~115938469~118897920~118897930~120213116~120385422~120469145~120469153~121046263~121046271~121246026~121246034&sid=1791907596&sct=1&seg=0&dl=https%3A%2F%2Fwww.cpsc.gov%2F&dt=CPSC.gov&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.page_placeholder=PLACEHOLDER_page_location&tfd=626. Refused to connect because it violates the document's Content Security Policy. |
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c>m=4e6a91 line 277, col 390 | Fetch API cannot load https://region1.google-analytics.com/g/collect?v=2&tid=G-CSLL4ZEK4L>m=45je6a91v9131934939za208xf1&_p=1791907596457&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&gdid=dMDhkMT&cid=935963711.1791907597&frm=0&ngs=1&pscdl=noapi&rcb=6&sr=412x823&uaa=&uab=64&uafvl=Not%2520A(Brand%3B99.0.0.0%7CChromium%3B154.0.8037.92&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115938466~115938468~118897920~118897930~120213116~120385423~120469145~120469153~121046263~121046271~121246026~121246034&dl=https%3A%2F%2Fcpsc.gov%2F&dt=CPSC.gov&dr=&sid=1791907597&sct=1&seg=0&_tu=wA&en=page_view&_fv=1&_ss=1&_ee=1&ep.agency=UNSPECIFIED%3ACPSC.GOV&ep.subagency=CPSC.GOV&ep.site_topic=unspecified%3Acpsc.gov&ep.site_platform=unspecified%3Acpsc.gov&ep.script_source=https%3A%2F%2Fdap.digitalgov.gov%2Funiversal-federated-analytics-min.js&ep.version=20260107%20v8.8%20-%20ga4&ep.protocol=https%3A&ep.using_parallel_tracker=no&ep.hostname_dimension=cpsc.gov&tfd=1261. Refused to connect because it violates the document's Content Security Policy. |
www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c>m=4e6a91 line 343, col 390 | Fetch API cannot load https://region1.google-analytics.com/g/collect?v=2&tid=G-XM65T6P0GR>m=45je6a91v9127324351za208xf1&_p=1791907596457&gcd=13l3l3l2l3l1&npa=1&dma_cps=a&dma=1&gdid=dMDhkMT&cid=935963711.1791907597&frm=0&ngs=1&pscdl=noapi&rcb=15&sr=412x823&uaa=&uab=64&uafvl=Not%2520A(Brand%3B99.0.0.0%7CChromium%3B154.0.8037.92&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616985~115938466~115938468~118897920~118897930~120213116~120385422~120469145~120469153~121046263~121046271~121246026~121246034&sid=1791907596&sct=1&seg=0&dl=https%3A%2F%2Fwww.cpsc.gov%2F&dt=CPSC.gov&en=page_view&_fv=1&_ss=1&_ee=1&ep.page_placeholder=PLACEHOLDER_page_location&tfd=821. Refused to connect because it violates the document's Content Security Policy. |
Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.
Performance issues directly impact user engagement and conversion rates.
| Issue type |
|---|
| Content security policy |
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.
Content Best Practices
Descriptive link text helps search engines understand your content. Learn how to make links more accessible.
Performance issues directly impact user engagement and conversion rates.
| Link destination | Link Text |
|---|---|
| www.cpsc.gov/Safety-Education | Learn More |
Format your HTML in a way that enables crawlers to better understand your app’s content.