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.
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.
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.
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.
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.
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.
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay. Learn how to avoid long main-thread tasks
Performance issues directly impact user engagement and conversion rates.
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 |
|---|---|
| The page has an unload handler in the main frame. | Actionable |
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.
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.
Internationalization and localization
If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These are opportunities to improve the interpretation of your content by users in different locales.
Best practices
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Informational: a Permissions-Policy directive showing feature -> allowed origins.
Source: MDN Permissions-Policy
| Failing Elements |
|---|
head > meta head > meta |
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These items highlight common accessibility best practices.
Best Practices
General
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| SharedStorage | ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825 line 6, col 89637 |
| Unload event listeners are deprecated and will be removed. |
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 |
|---|---|
/maps/api/js?key=AIzaSyDlIrvrw-tjdtMgutn1VQ_VizItXx-1ujM&... line 1410, col 206 | Connecting to 'https://maps.googleapis.com/maps/api/mapsjs/gen_204?csp_test=true' violates the following Content Security Policy directive: "connect-src 'self' ws: https://*.google-analytics.com https://s3-eu-west-1.amazonaws.com". The action has been blocked. |
Failed to load resource: the server responded with a status of 404 () | |
Failed to load resource: the server responded with a status of 404 () | |
www.google-analytics.com/analytics.js line 33, col 54 | Loading the script 'https://www.googletagmanager.com/gtag/js?id=G-J084TRT2WD&cx=c&_slc=1' violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval' 'unsafe-inline' https://*.googleapis.com https://js-agent.newrelic.com/nr-1044.min.js https://www.google.com https://www.gstatic.com https://*.google-analytics.com http://*.getclicky.com". Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback. The action has been blocked. |
ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825 line 6, col 46095 | TypeError: Cannot read properties of null (reading '1')
at https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:46096
at 16.../flowplayer (https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:47236)
at j (https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:6960)
at https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:7011
at 19../engine/embed (https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:63011)
at j (https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:6960)
at a (https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:7128)
at https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:7145
at https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:6675
at https://ssp.improvedigital.com/compiled/js/ext-multi.js?vmaster-1825:7:6681 |
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 |
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
Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.
Performance issues directly impact user engagement and conversion rates.
Format your HTML in a way that enables crawlers to better understand your app’s content.