Lighthouse Desktop
· 0 checks — Desktop 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.
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.
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.
| URL | Transfer Size | Duration |
|---|---|---|
| fonts.googleapis.com/css?family=Lato:200,300,400,500,600,700,800,900 | 552 B | 64 ms |
| cdn.cookielaw.org/scripttemplates/otSDKStub.js | 9.1 KiB | 264 ms |
| fonts.googleapis.com/css?family=Roboto:400,700 | 2.0 KiB | 272 ms |
| fast.fonts.net/cssapi/de675742-710f-4ef8-bfc7-a5c34e489bdb.css | 1.5 KiB | 265 ms |
| www.arm.com/shared/bundle/all.css?v=1.0.9587.17207 | 96.6 KiB | 161 ms |
| www.arm.com/arm-tag-manager/arm.com/atm.js | 3.0 KiB | |
| /t/1.css?apiType=css&projectid=de675742-710f-4ef8-bfc7-a5... | 524 B | 57 ms |
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 | |
|---|---|---|---|
As AI scales div > div.c-horizontal-tabs-panel-content-promo-item--primary > div.c-horizontal-tabs-panel-content-promo-item__image > img | /-/media/global/homepage/horizontal/as-ai-scales-600x275.... | 145.4 KiB | 117.1 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 |
|---|---|
| arm.com/ | 577 ms |
| www.arm.com/ | 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.
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 |
|---|---|---|
| www.arm.com/shared/bundle/all.css?v=1.0.9587.17207 | 96.2 KiB | 85.2 KiB |
| www.arm.com/static/designsystem/rel/4.14.1/arm-design-system-scoped.css | 65.7 KiB | 61.5 KiB |
| www.arm.com/Coveo/Hive/css/CoveoFullSearch.css | 47.3 KiB | 46.6 KiB |
| #onetrust-banner-sdk{box-shadow:0 0 18px rgba(0,0,0,.2)} … | 17.6 KiB | 12.6 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.arm.com/Coveo/Hive/js/CoveoJsSearch.Lazy.min.js | 189.9 KiB | 97.2 KiB |
| assets.adobedtm.com/launch-EN10e66088202b43a3b7f30a6ded39776d.min.js | 184.0 KiB | 66.6 KiB |
| www.arm.com/shared/bundle/all.js?v=1.0.9587.17207 | 100.3 KiB | 66.5 KiB |
| cdn.cookielaw.org/scripttemplates/202409.2.0/otBannerSdk.js | 111.8 KiB | 60.4 KiB |
| s.go-mpulse.net/boomerang/YX9U9-3CW2M-92JLU-3BLJD-T6LD5 | 60.0 KiB | 25.9 KiB |
Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| Pages with cache-control:no-store header cannot enter back/forward cache. | Actionable |
| Pages whose main resource has cache-control:no-store cannot enter back/forward cache. | Not actionable |
| Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header. | Not actionable |
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.arm.com/Coveo/Hive/css/CoveoFullSearch.css | 47.3 KiB | 4.3 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 | |
|---|---|
As AI scales div > div.c-horizontal-tabs-panel-content-promo-item--primary > div.c-horizontal-tabs-panel-content-promo-item__image > img | /-/media/global/homepage/horizontal/as-ai-scales-600x275.... |
Cloud AI icon li > div.c-horizontal-tabs-panelNav-tab > div > img | /-/media/global/homepage/horizontal/cloud-ai-icon-infra-8... |
Edge AI icon li > div.c-horizontal-tabs-panelNav-tab > div > img | /-/media/global/homepage/horizontal/edge-ai-icon-800x800p... |
Physical ai icon li > div.c-horizontal-tabs-panelNav-tab > div > img | /-/media/global/homepage/horizontal/physical-ai-icon-800x... |
Powered by Onetrust div.ot-pc-footer > div.ot-pc-footer-logo > a > img | cdn.cookielaw.org/logos/static/powered_by_logo.svg |
arm ul.c-top-navigation-sections > li.c-top-navigation-section-logo > a > img | /-/media/global/logos/arm-logo-white-rgb.svg?rev=d98f22d3... |
arm div.column > div.c-footer__row > div.c-footer__section > img.c-footer__logo | /-/media/global/logos/arm-logo-white-rgb.svg?rev=d98f22d3... |
Company Logo div > div.ot-pc-header > div.ot-pc-logo > img | /logos/4230c274-73e7-42ff-86c2-f30227e11c55/7d663903-ba9e... |
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.
Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Build CPUs for AI-driven cloud workloads
Run AI and cloud workloads effic… div#tns1-iw > div#tns1 > div#tns1-item0 > a.c-carousel-card |
A new CPU for the
age of AI
Explore how the Arm AGI CPU supports next-gen… div#tns1-iw > div#tns1 > div#tns1-item1 > a.c-carousel-card |
Tech unheard
Panos Panay, Senior Vice President of Amazon Devices and Se… div#tns1-iw > div#tns1 > div#tns1-item2 > a.c-carousel-card |
Gemma 4 accelerates on-device AI
Bring real-time, privacy-preserving AI d… div#tns1-iw > div#tns1 > div#tns1-item3 > a.c-carousel-card |
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 |
|---|---|
Access to fetch at 'https://cdn.cookielaw.org/logos/static/ot_guard_logo.svg' from origin 'https://www.arm.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Access to fetch at 'https://cdn.cookielaw.org/scripttemplates/202409.2.0/assets/otCommonStyles.css' from origin 'https://www.arm.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED |
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.
Performance issues directly impact user engagement and conversion rates.
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.arm.com/markets/healthcare-ai | Learn more |
| www.arm.com/company/arm-and-aston-martin-racing/innovation-pit-stop | Learn more |
| www.arm.com/markets/consumer-technologies/wearables | Learn more |
| www.arm.com/products/cloud-datacenter | Learn more |
| www.arm.com/products/autonomous-machines | Learn more |
| www.arm.com/products/mobile-pc | Learn more |
| www.arm.com/products/wearables-smart-home-embedded | Learn more |
| www.arm.com/company/policies/cookies | More information |
Format your HTML in a way that enables crawlers to better understand your app’s content.
Crawling and Indexing
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
Products div.c-top-navigation-flex > ul.c-top-navigation-sections > li.c-top-navigation-section > a.c-top-navigation-section-link |
Markets div.c-top-navigation-flex > ul.c-top-navigation-sections > li.c-top-navigation-section > a.c-top-navigation-section-link |
Partners div.c-top-navigation-flex > ul.c-top-navigation-sections > li.c-top-navigation-section > a.c-top-navigation-section-link |
Developers div.c-top-navigation-flex > ul.c-top-navigation-sections > li.c-top-navigation-section > a.c-top-navigation-section-link |
Support & Training div.c-top-navigation-flex > ul.c-top-navigation-sections > li.c-top-navigation-section > a.c-top-navigation-section-link |
Company div.c-top-navigation-flex > ul.c-top-navigation-sections > li.c-top-navigation-section > a.c-top-navigation-section-link |
To appear in search results, crawlers need access to your app.