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Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

80

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

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

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
images.videolan.org/style/fonts/Raleway/Raleway-Regular.woff265 ms
images.videolan.org/style/fonts/Raleway/Raleway-Thin.woff250 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
VLC media player - Windows 7 - Qt Interface div.slick-list > div.slick-track > div.screenshot2 > img
images.videolan.org/vlc/screenshots/3.0.0/3.0.17-windows11-fitted.jpg69.2 KiB38.7 KiB
VLMC icon div.col-sm-6 > a > div.media-left > img.media-object
images.videolan.org/images/VLMC-IconSmall.png14.6 KiB13.1 KiB
x264 Icon li.media > a > div.media-left > img.media-object
images.videolan.org/images/x264-IconSmall.png14.0 KiB12.5 KiB
DVBlast Icon li.media > a > div.media-left > img.media-object
images.videolan.org/images/DVBlast-IconSmall.png13.6 KiB12.1 KiB
div.v-align > div.inner > div.platform-icons > a.icon div.v-align > div.inner > div.platform-icons > a.icon
images.videolan.org/images/icons/platform-sprite.png11.3 KiB8.1 KiB
VLC icon div.col-sm-6 > a > div.media-left > img.media-object
images.videolan.org/images/VLC-IconSmall.png8.2 KiB7.0 KiB
Spread VLC ul.media-list > li.media > div.media-left > img.media-object
images.videolan.org/images/heart.png5.5 KiB4.9 KiB
Contribute Work to VLC ul.media-list > li.media > div.media-left > img.media-object
images.videolan.org/images/tools.png5.3 KiB4.7 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-8-IMG
nodeLabel: VLC media player - Windows 7 - Qt Interface
path: 1,HTML,1,BODY,0,DIV,3,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,IMG
selector: div.slick-list > div.slick-track > div.screenshot2 > img
snippet: <img src="//images.videolan.org/vlc/screenshots/3.0.0/3.0.17-windows11-fitted.jpg" alt="VLC media player - Windows 7 - Qt Interface" data-lazy="" style="margin: auto;">

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
images.videolan.org/js/jquery.min.js37.4 KiB152 ms
images.videolan.org/style/bootstrap.min.css18.8 KiB924 ms
images.videolan.org/style/style.min.css7.2 KiB
www.videolan.org/style/slick.min.css1.5 KiB

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.google-analytics.com/analytics.js7200.0 s20.9 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 830 ms
URLTime Spent
videolan.org/830 ms
www.videolan.org/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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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.

Why this matters

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 170 ms 17.1 KiB
URLTransfer SizeEst Savings
images.videolan.org/style/bootstrap.min.css18.5 KiB17.1 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 126.8 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-GZPMWXW7NJ&cx=c&gtm=4e64h1145.8 KiB63.5 KiB
www.googletagmanager.com/gtag/js?id=UA-38853043-1125.1 KiB63.3 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Large Orange VLC media player Traffic Cone Logo div.row > div.v-align > div.center-font-xs > img.big-vlc-img
images.videolan.org/images/icons-VLC/vlc.mini.svg
Association VideoLAN div.row > div.col-sm-12 > a > img.center-xs
images.videolan.org/images/logoGrey.png
DVBlast Icon li.media > a > div.media-left > img.media-object
images.videolan.org/images/DVBlast-IconSmall.png
VLMC icon div.col-sm-6 > a > div.media-left > img.media-object
images.videolan.org/images/VLMC-IconSmall.png
x264 Icon li.media > a > div.media-left > img.media-object
images.videolan.org/images/x264-IconSmall.png
VLC icon div.col-sm-6 > a > div.media-left > img.media-object
images.videolan.org/images/VLC-IconSmall.png
Contribute Work to VLC ul.media-list > li.media > div.media-left > img.media-object
images.videolan.org/images/tools.png
Spread VLC ul.media-list > li.media > div.media-left > img.media-object
images.videolan.org/images/heart.png
Donate to VLC ul.media-list > li.media > div.media-left > img.media-object
images.videolan.org/images/cash.png

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

●Layout shift culprits
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 768 KiB
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.5 s
●Minimizes main-thread work 2.0 s
●Avoid long main-thread tasks 6 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 20 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 40 ms
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○Avoid non-composited animations
80

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

When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
VLC for Windows Store div.v-align > div#header-carousel > div.slick-list > div.slick-track

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
VideoLAN, a project and a non-profit organization. body.new-design > div#bodyInner > div.header > div#nonprofitOrganizationDiv2
Version 3.7.0  •  Android div.row > div.v-align > div.inner > div#downloadDetails
FOR EVERYONE div.container > div.row > div.col-md-5 > div.audienceCallout
FOR PROFESSIONALS div.container > div.row > div.col-sm-6 > div.audienceCallout
FOR DEVELOPERS div.container > div.row > div.col-sm-6 > div.audienceCallout
DONATE div.container > div.row > div.col-md-4 > div.audienceCallout
CONTRIBUTE div.container > div.row > div.col-md-4 > div.audienceCallout
SPREAD THE WORD div.container > div.row > div.col-md-4 > div.audienceCallout
2026-02-25 div.col-md-6 > div > div.item > div.date
2026-01-31 div.col-md-6 > div > div.item > div.date
2026-01-08 div.col-md-6 > div > div.item > div.date
2026-01-08 div.col-md-6 > div > div.item > div.date
2025-12-01 div.col-md-6 > div > div.item > div.date
Legal div.row > div.col-md-12 > p > a
Report Trademark Abuse div.col-md-12 > p > span > a
VideoLAN non-profit organization. div.col-md-12 > p > span > a
Made By Argon div.col-md-12 > p > span > a
CC BY-SA 3.0+ div.col-md-12 > p > span > a
Roman Khramov div.col-md-12 > p > span > a

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
non-profit organization. div#bodyInner > div.header > div#nonprofitOrganizationDiv2 > a.noUnderline
[...] div.col-md-6 > div > p > a
[...] div.col-md-6 > div > p > a
[...] div.col-md-6 > div > p > a

These are opportunities to improve the legibility of your content.

Names and labels

Form elements without effective labels can create frustrating experiences for screen reader users. Learn more about the `select` element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Afrikaans | Afrikaans Amharic | አማርኛ Aragonese | Aragonese Arabic | العربية Ass… div.row > div#translation > div.footerHeading > select

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.v-align > div.inner > div.btn-group > a.btn div.v-align > div.inner > div.btn-group > a.btn
div.v-align > div.inner > div.platform-icons > a.icon div.v-align > div.inner > div.platform-icons > a.icon
div.v-align > div.inner > div.platform-icons > a.icon div.v-align > div.inner > div.platform-icons > a.icon
div.v-align > div.inner > div.platform-icons > a.icon div.v-align > div.inner > div.platform-icons > a.icon
div.v-align > div.inner > div.platform-icons > a.icon div.v-align > div.inner > div.platform-icons > a.icon
div.v-align > div.inner > div.platform-icons > a.icon div.v-align > div.inner > div.platform-icons > a.icon
div.overflow-hidden > h1 > span.ltrFloatRight > a.social div.overflow-hidden > h1 > span.ltrFloatRight > a.social
div.overflow-hidden > h1 > span.ltrFloatRight > a.social div.overflow-hidden > h1 > span.ltrFloatRight > a.social
div.overflow-hidden > h1 > span.ltrFloatRight > a.social div.overflow-hidden > h1 > span.ltrFloatRight > a.social
div.row > div.col-sm-12 > div.social-box > a.social div.row > div.col-sm-12 > div.social-box > a.social
div.row > div.col-sm-12 > div.social-box > a.social div.row > div.col-sm-12 > div.social-box > a.social
div.row > div.col-sm-12 > div.social-box > a.social div.row > div.col-sm-12 > div.social-box > a.social

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.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
VLC for Windows div.col-xs-6 > ul > li > a
VLC for Mac OS X div.col-xs-6 > ul > li > a
VLC for Ubuntu div.col-xs-6 > ul > li > a
VLC for Android div.col-xs-6 > ul > li > a
VLC for iOS div.col-xs-6 > ul > li > a
Skins div.col-xs-6 > ul > li > a
Extensions div.col-xs-6 > ul > li > a
Features div.col-xs-6 > ul > li > a
Screenshots div.col-xs-6 > ul > li > a
VLC Skin Editor div.col-xs-6 > ul > li > a
DVBlast div.col-xs-6 > ul > li > a
x264 div.col-xs-6 > ul > li > a
x262 div.col-xs-6 > ul > li > a
x265 div.col-xs-6 > ul > li > a
multicat div.col-xs-6 > ul > li > a
dav1d div.col-xs-6 > ul > li > a
VLMa div.col-xs-6 > ul > li > a
libVLC div.col-xs-6 > ul > li > a
libdvdcss div.col-xs-6 > ul > li > a
libdvdnav div.col-xs-6 > ul > li > a
libdvdread div.col-xs-6 > ul > li > a
libbluray div.col-xs-6 > ul > li > a
libdvbpsi div.col-xs-6 > ul > li > a
libaacs div.col-xs-6 > ul > li > a
libdvbcsa div.col-xs-6 > ul > li > a
biTStream div.col-xs-6 > ul > li > a
vlc-unity div.col-xs-6 > ul > li > a
Wiki div.col-xs-6 > ul > li > a
Forums div.col-xs-6 > ul > li > a
Mailing-Lists div.col-xs-6 > ul > li > a
Donate money div.col-xs-6 > ul > li > a
Donate time div.col-xs-6 > ul > li > a
Get Goodies div.col-xs-6 > ul > li > a
Team div.col-xs-6 > ul > li > a
Legal div.col-xs-6 > ul > li > a
Contact us div.col-xs-6 > ul > li > a
Partners div.col-xs-6 > ul > li > a
Mirrors div.col-xs-6 > ul > li > a
Press center div.col-xs-6 > ul > li > a
Events div.col-xs-6 > ul > li > a
Security center div.col-xs-6 > ul > li > a
Get Involved div.col-xs-6 > ul > li > a

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●ARIA toggle fields have accessible names
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Deprecated ARIA roles were not used
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Elements with visible text labels have matching accessible names.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
96

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
www.videolan.org/ line 356, col 21
WebSocket connection to 'wss://get.videolan.org/wscounter/3.0.23' failed: Error during WebSocket handshake: Unexpected response code: 502
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
75

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.videolan.org/contribute.htmlLEARN MORE
www.videolan.org/contribute.htmlLEARN MORE
www.videolan.org/contribute.htmlLEARN MORE
www.videolan.org/security/sb-vlc3022.htmlhere

hreflang links tell search engines what version of a page they should list in search results for a given language or region. Learn more about `hreflang`.

Why this matters

Performance issues directly impact user engagement and conversion rates.
head > link
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Format your HTML in a way that enables crawlers to better understand your app’s content.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #ContentError
20Disallow: CVSPattern should either be empty, start with "/" or "*"
21Disallow: .svnPattern should either be empty, start with "/" or "*"

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links are crawlable
●Image elements have `[alt]` attributes
○Document has a valid `rel=canonical`

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