Levif.be Le Vif - Tous les jours, toute l'info.

Actualité, analyses, opinions et journalisme d’investigation. Toute la journée. Pour ne rien vous cacher.

Levif.be Desktop Performance

levif.be Desktop Performance

38/100

These metrics represent real-world Chrome users experience viewing levif.be web page. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.

User Loading Experience

First Input Delay

Cumulative Layout Shift

First Contentful Paint

Largest Contentful Paint

Metrics

Speed Index1/100 6.1 s

Speed Index shows how quickly the contents of a page are visibly populated. Learn more.

Cumulative Layout Shift22/100 0.436

Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.

Time to Interactive24/100 6.3 s

Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.

First Contentful Paint26/100 2.1 s

First Contentful Paint marks the time at which the first text or image is painted. Learn more.

Largest Contentful Paint43/100 2.7 s

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More

Total Blocking Time72/100 240 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.

Should Fix (20)

Opportunities

These suggestions can help your page load faster. They don't directly affect the Performance score.

Properly size images

Potential savings of 653 KiB

1,940 ms

Eliminate render-blocking resources

Potential savings of 1,470 ms

1,470 ms

Remove unused JavaScript

Potential savings of 865 KiB

1,280 ms

Serve images in next-gen formats

Potential savings of 227 KiB

400 ms

Efficiently encode images

Potential savings of 126 KiB

160 ms

Defer offscreen images

Potential savings of 267 KiB

160 ms

Preload key requests

Diagnostics

More information about the performance of your application. These numbers don't directly affect the Performance score.

Ensure text remains visible during webfont load

Avoid `document.write()`

Does not use passive listeners to improve scrolling performance

Serve static assets with an efficient cache policy

98 resources found

Minimize main-thread work

6.5 s

Avoid an excessive DOM size

1,907 elements

Avoid enormous network payloads

Total size was 4,158 KiB

Reduce JavaScript execution time

3.3 s

Largest Contentful Paint element

1 element found

Keep request counts low and transfer sizes small

357 requests • 4,159 KiB

Avoid long main-thread tasks

14 long tasks found

Avoid large layout shifts

4 elements found

Avoid chaining critical requests

31 chains found

Passed Audits (9)

Avoid multiple page redirects

Initial server response time was short

Root document took 160 ms

Minify CSS

Minimize third-party usage

Third-party code blocked the main thread for 240 ms

Remove unused CSS

Potential savings of 47 KiB

Preconnect to required origins

Use video formats for animated content

Enable text compression

Minify JavaScript

Potential savings of 87 KiB

Levif.be Desktop SEO

levif.be Desktop SEO

83/100

These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.

Should Fix (2)

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Image elements do not have `[alt]` attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Links are not crawlable

Passed Audits (10)

Has a `<meta name="viewport">` tag with `width` or `initial-scale`

Document has a valid `rel=canonical`

Page isn’t blocked from indexing

Page has successful HTTP status code

Document has a meta description

Document has a valid `hreflang`

Links have descriptive text

robots.txt is valid

Document has a `<title>` element

Document avoids plugins

Levif.be Desktop Best Practices

levif.be Desktop Best Practices

62/100

These checks highlight opportunities to improve the overall code health of levif.be page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.

Should Fix (5)

General

Browser errors were logged to the console

Trust and Safety

Links to cross-origin destinations are unsafe

Does not use HTTPS

1 insecure request found

Includes front-end JavaScript libraries with known security vulnerabilities

4 vulnerabilities detected

Requests the geolocation permission on page load

Passed Audits (9)

Detected JavaScript libraries

Avoids requesting the notification permission on page load

Page has the HTML doctype

Allows users to paste into password fields

Avoids deprecated APIs

Avoids Application Cache

Serves images with appropriate resolution

Properly defines charset

Displays images with correct aspect ratio

Levif.be Desktop Progressive Web App

levif.be Desktop Progressive Web App

22/100

These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.

Should Fix (9)

PWA Optimized

Manifest doesn't have a maskable icon

Is not configured for a custom splash screen

Does not set a theme color for the address bar.

Installable

Does not register a service worker that controls page and `start_url`

Web app manifest does not meet the installability requirements

Does not use HTTPS

1 insecure request found

Fast and reliable

Page load is not fast enough on mobile networks

Interactive on simulated mobile network at 30.1 s

Current page does not respond with a 200 when offline

`start_url` does not respond with a 200 when offline

Passed Audits (4)

Has a `<meta name="viewport">` tag with `width` or `initial-scale`

Provides a valid `apple-touch-icon`

Contains some content when JavaScript is not available

Redirects HTTP traffic to HTTPS

Levif.be Desktop Accessibility

levif.be Desktop Accessibility

74/100

These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.

Should Fix (7)

Names and labels

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.

Image elements do not have `[alt]` attributes

`<frame>` or `<iframe>` elements do not have a title

Links do not have a discernible name

ARIA

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.

ARIA IDs are not unique

Contrast

These are opportunities to improve the legibility of your content.

Background and foreground colors do not have a sufficient contrast ratio.

Best practices

These items highlight common accessibility best practices.

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

`<html>` element does not have a `[lang]` attribute

Passed Audits (17)

`[role]` values are valid

`[aria-*]` attributes have valid values

Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

`[role]`s are contained by their required parent element

List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements

Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

`[aria-hidden="true"]` elements do not contain focusable descendents

Document has a `<title>` element

No element has a `[tabindex]` value greater than 0

`[aria-*]` attributes are valid and not misspelled

Form elements have associated labels

`[role]`s have all required `[aria-*]` attributes

Buttons have an accessible name

`[aria-*]` attributes match their roles

`[aria-hidden="true"]` is not present on the document `<body>`

The page contains a heading, skip link, or landmark region

`[id]` attributes on active, focusable elements are unique

Levif.be Desktop PageSpeed

Desktop Speed

53/100

These checks analyze the performance of levif.be on desktop devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?

Should Fix (8)

Leverage browser caching

Optimize images

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Enable compression

Avoid landing page redirects

Minify JavaScript

Minify CSS

Minify HTML

Passed Audits (2)

Reduce server response time

Prioritize visible content

Levif.be Typos

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Levif.be Le Vif - Tous les jours, toute l'info.

Actualité, analyses, opinions et journalisme d’investigation. Toute la journée. Pour ne rien vous cacher.

Levif.be Desktop Performance

User Loading Experience

First Input Delay

Cumulative Layout Shift

First Contentful Paint

Largest Contentful Paint

Metrics

Speed Index1/100 6.1 s

Cumulative Layout Shift22/100 0.436

Time to Interactive24/100 6.3 s

First Contentful Paint26/100 2.1 s

Largest Contentful Paint43/100 2.7 s

Total Blocking Time72/100 240 ms

Should Fix (20)

Opportunities

Diagnostics

Passed Audits (9)

Levif.be Desktop SEO

Should Fix (2)

Content Best Practices

Crawling and Indexing

Passed Audits (10)

Levif.be Desktop Best Practices

Should Fix (5)

General

Trust and Safety

Passed Audits (9)

Levif.be Desktop Progressive Web App

Should Fix (9)

PWA Optimized

Installable

Fast and reliable

Passed Audits (4)

Levif.be Desktop Accessibility

Should Fix (7)

Names and labels

ARIA

Contrast

Best practices

Internationalization and localization

Passed Audits (17)

Levif.be Desktop PageSpeed

Should Fix (8)

Passed Audits (2)

Levif.be Typos

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