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.
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.
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 | |
|---|---|---|---|
Language selection
Portaal belgium.be
Informatie en diensten van de overheid
Po… body.no-sidebars > div.page > div.layout > div.layout--region | /themes/custom/belgium_theme/images/backgrounds/language-... | 111.1 KiB | 27.0 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.
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.
HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.
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.
Lists the toplevel main thread tasks that executed during page load.
Performance issues directly impact user engagement and conversion rates.
Collection of useful page vitals.
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 |
|---|---|
| fgov.be/ | 1.1 s |
| fgov.be/ | 1.4 s |
| fgov.be/ | 339 ms |
| www.belgium.be/ | 627 ms |
| www.belgium.be/ | 209 ms |
| www.belgium.be/language_selection_page?destination=/node/8521 | 0 ms |
| www.belgium.be/language_selection_page?destination=/node/8521 | 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
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.
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.
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 |
|---|---|---|
| /TSPD/084c9d00c5ab2000d598502f965031a1bd42776d6f6e816be0d... | 37.0 KiB | 29.2 KiB |
| www.belgium.be/core/misc/drupal.js?v=10.3.13 | 6.6 KiB | 5.2 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.belgium.be/themes/contrib/kiso/fonts/font-awesome/font-awesome.css?tdv7j7 | 13.8 KiB | 13.8 KiB |
| use.fontawesome.com/releases/v5.10.2/css/all.css | 12.7 KiB | 12.7 KiB |
| www.belgium.be/themes/custom/belgium_theme/css/components/blocks.css?tdv7j7 | 10.6 KiB | 10.6 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 |
|---|---|---|
| matomo.bosa.be/matomo.js | 65.3 KiB | 45.9 KiB |
| www.belgium.be/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 | 32.7 KiB | 21.4 KiB |
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.
Best practices
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.language-selection-page html.language-selection-page |
These items highlight common accessibility best practices.
Best Practices
Trust and Safety
All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.
Performance issues directly impact user engagement and conversion rates.
| Insecure URL | Request Resolution |
|---|---|
| burp/favicon.ico | Automatically upgraded to HTTPS |
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 |
|---|---|
| Unload event listeners are deprecated and will be removed. | /TSPD/084c9d00c5ab2000d598502f965031a1bd42776d6f6e816be0d... line 147, col 439 |
| Unload event listeners are deprecated and will be removed. | /TSPD/084c9d00c5ab2000d598502f965031a1bd42776d6f6e816be0d... line 146, col 415 |
| Unload event listeners are deprecated and will be removed. | /TSPD/084c9d00c5ab2000d598502f965031a1bd42776d6f6e816be0d... line 147, col 439 |
| Unload event listeners are deprecated and will be removed. | /TSPD/084c9d00c5ab2000d598502f965031a1bd42776d6f6e816be0d... line 147, col 439 |
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 |
|---|---|
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_NAME_NOT_RESOLVED | |
Failed to load resource: the server responded with a status of 404 (Not Found) | |
/TSPD/084c9d00c5ab2000d598502f965031a1bd42776d6f6e816be0d... line 852, col 332 | Not allowed to load local resource: chrome://rumola/content/rumola48.png |
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 |
|---|
| Mixed content |
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.