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.
Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.
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.
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 | |
|---|---|---|---|
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i31!3i24!4i256!2m3!1e4!2st!3i77... | 163.7 KiB | 131.1 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i32!3i22!4i256!2m3!1e4!2st!3i77... | 139.4 KiB | 106.7 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i32!3i23!4i256!2m3!1e4!2st!3i77... | 136.8 KiB | 104.2 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i31!3i25!4i256!2m3!1e4!2st!3i77... | 122.4 KiB | 89.8 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i31!3i23!4i256!2m3!1e4!2st!3i77... | 118.9 KiB | 86.2 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i32!3i25!4i256!2m3!1e4!2st!3i77... | 109.5 KiB | 76.9 KiB |
Discover the new airport panel li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/general@2x.webp | 84.1 KiB | 62.2 KiB |
Detailed airport disruption stats li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-disruption@2x.webp | 76.0 KiB | 56.2 KiB |
Many ways to access airport information li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-pins@2x.webp | 66.7 KiB | 49.3 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i30!3i24!4i256!2m3!1e4!2st!3i77... | 82.0 KiB | 49.3 KiB |
Airport & runway details li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-runway-details@2x.webp | 62.0 KiB | 45.9 KiB |
Airport Statistics: Runway usage li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/runway-usage@2x.webp | 52.0 KiB | 38.4 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i30!3i23!4i256!2m3!1e4!2st!3i77... | 69.9 KiB | 37.3 KiB |
Airport Statistics: Movements per day li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/movements-per-day@2x.webp | 48.8 KiB | 36.1 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i31!3i22!4i256!2m3!1e4!2st!3i77... | 57.8 KiB | 25.2 KiB |
div > div > div > img div > div > div > img | /maps/vt?pb=!1m5!1m4!1i6!2i30!3i25!4i256!2m3!1e4!2st!3i77... | 41.7 KiB | 9.8 KiB |
Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.
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 |
|---|---|
| www.flightradar24.com/fonts/roboto-condensed.css | 946 B |
| www.flightradar24.com/fonts/roboto.css | 1.2 KiB |
| www.flightradar24.com/fonts/open-sans.css | 766 B |
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.
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.
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 |
|---|---|
| flightradar24.com/ | 927 ms |
| www.flightradar24.com/ | 0.0 ms |
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS
Performance issues directly impact user engagement and conversion rates.
| Element | Layout shift score |
|---|---|
PREMIUM FEATURE
Airport Statistics: Runway usage
See the last 7 days of total t… div#headlessui-dialog-v-24-1 > div.fixed > div.fixed > div#headlessui-dialog-panel-v-24-4 | 0.145 |
PREMIUM FEATURE
Airport Statistics: Runway usage
See the last 7 days of total t… div#headlessui-dialog-v-24-1 > div.fixed > div.fixed > div#headlessui-dialog-panel-v-24-4 | 0.141 |
Open in app div.pointer-events-none > div.flex > div.pointer-events-auto > button.whitespace-nowrap | 0.000 |
LOG IN div.relative > button#auth-button > div.flex > span.whitespace-nowrap | 0.000 |
Diagnostics
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 |
|---|---|---|
| cdn.gravito.net/cmp/v6/gpp-test/index5.js | 41.7 KiB | 9.6 KiB |
| cdn.gravito.net/cmp/v6/gpp-test/index7.js | 22.9 KiB | 9.6 KiB |
| www.flightradar24.com/build/assets/init-CSCl8LBk.js | 15.5 KiB | 6.5 KiB |
| live.primis.tech/live/liveView.php?s=118969 | 36.1 KiB | 5.6 KiB |
| cdn.gravito.net/customhtmlscripts/fr24gppcmpwrapper.js | 9.5 KiB | 3.1 KiB |
| cdn.gravito.net/cmp/v6/gpp-test/consent2.js | 10.9 KiB | 2.4 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 |
|---|---|---|
| www.flightradar24.com/build/assets/app-DW2t_My-.css | 21.9 KiB | 19.6 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.
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.
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 | 76.3 s |
| Script Evaluation | 15.8 s |
| Garbage Collection | 691 ms |
| Style & Layout | 621 ms |
| Script Parsing & Compilation | 508 ms |
| Rendering | 288 ms |
| Parse HTML & CSS | 45 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 | |
|---|---|
Airport Statistics: Runway usage li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/runway-usage@2x.webp |
Airport & runway details li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-runway-details@2x.webp |
Many ways to access airport information li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-pins@2x.webp |
Discover the new airport panel li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/general@2x.webp |
Detailed airport disruption stats li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-disruption@2x.webp |
Airport Statistics: Movements per day li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/movements-per-day@2x.webp |
Airport Statistics: Runway usage li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/runway-usage@2x.webp |
Airport & runway details li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-runway-details@2x.webp |
Many ways to access airport information li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-pins@2x.webp |
Discover the new airport panel li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/general@2x.webp |
Detailed airport disruption stats li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/airport-disruption@2x.webp |
Airport Statistics: Movements per day li.grid > div.px-1.5 > div.w-full > img.mb-4 | www.flightradar24.com/assets/images/airport_panel/movements-per-day@2x.webp |
website logo from config div#gravitoCMP-tab-container-id > div.gravitoCMP-brand-header > div.gravitoCMP-logo-div > img.gravitoCMP-logo | www.flightradar24.com/static/images/logo_fr24_flat_no_text.svg |
New features div.z-10 > article.max-h-[calc(100vh-2rem)] > picture > img.w-full | www.flightradar24.com/assets/images/airport_panel/whats-new@2x.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 |
|---|
PREMIUM FEATURE
Airport Statistics: Runway usage
See the last 7 days of total t… div#headlessui-portal-root > div > div > div#headlessui-dialog-v-24-1 |
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.
Names and labels
When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 |
article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 |
article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 |
article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 |
article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 |
article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 article.max-h-[calc(100vh-2rem)] > article.relative > nav.z-10 > button.size-2 |
article.relative > section.group > nav > button.absolute article.relative > section.group > nav > button.absolute |
article.relative > section.group > nav > button.absolute article.relative > section.group > nav > button.absolute |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Contrast
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Agree and close div#gravitoCMP-tab-container-id > div.gravitoCMP-action-footer-div > div.gravitoCMP-action-container > button#gravitoTCFCMP-layer1-accept-all |
These are opportunities to improve the legibility of your content.
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 |
|---|---|
maps.google.com/maps-api-v3/api/js/63/14d/main.js line 180, col 422 | Attempted to load a Vector Map, but failed. Falling back to Raster. Please see https://developers.google.com/maps/documentation/javascript/webgl/support for more info |
Failed to load resource: the server responded with a status of 503 () | |
Failed to load resource: the server responded with a status of 503 () |
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.
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 |
|---|
Our privacy policy div#gravitoCMP-tab-container-id > div.gravitoCMP-tab-footer > div.gravitoCMP-footer-links > a.gravitoCMP-text-light |
To appear in search results, crawlers need access to your app.