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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.

66

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.

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
/reteassociazioni/production/photos/906/abde48879d4edd84e...0.0 ms144.3 KiB
/reteassociazioni/production/photos/907/a395574fce8b454fb...0.0 ms141.7 KiB
/reteassociazioni/production/photos/908/eeeb9e424c2581ed7...0.0 ms120.0 KiB
/reteassociazioni/production/photos/909/805a86c85e2a15d8e...0.0 ms100.0 KiB
s3.amazonaws.com/reteassociazioni/banners/responsive.png0.0 ms99.1 KiB
/assets/portali/menuclick24-menu-digitale-qr-code-fa31240...0.0 ms94.3 KiB
/assets/portali/listanozze24-lista-nozze-online-debe434d7...0.0 ms80.0 KiB
reteassociazioni.it/assets/slide/slide-4-f4f7ba8649b4ee69560315f4da42fb74.jpg0.0 ms75.4 KiB
reteassociazioni.it/assets/slide/slide-2-de953fd9138801d9f06edc98513b7da0.jpg0.0 ms74.9 KiB
reteassociazioni.it/assets/slide/slide-5-960f74290ffa57567238f91de7a8bdd9.jpg0.0 ms72.9 KiB
reteassociazioni.it/assets/application-aacc84bad66158d53bf531723a00c993.js0.0 ms72.6 KiB
reteassociazioni.it/assets/slide/slide-3-d781df347450e60e985720b0ff949938.jpg0.0 ms71.0 KiB
reteassociazioni.it/assets/slide/slide-1-3ac7a2da8ecbcfd1c04052690d91cf82.jpg0.0 ms70.4 KiB
/assets/portali/everylog-370-370-d539433ab81d3c468329c7bf...0.0 ms69.3 KiB
/reteassociazioni/production/photos/903/a20e9090f812718ee...0.0 ms50.5 KiB
/reteassociazioni/production/photos/907/e505c51763d4d037d...0.0 ms37.8 KiB
/reteassociazioni/production/photos/906/add1e2168587859d3...0.0 ms37.5 KiB
/assets/portali/gruppi-emergenti-9001b21e432859fb8ab58e0e...0.0 ms36.5 KiB
reteassociazioni.it/assets/frontpage-f29e7d3037083f29a02ebbf6a6139eb2.css0.0 ms32.6 KiB
/reteassociazioni/production/photos/908/d76e62b451ed739a7...0.0 ms32.6 KiB
/reteassociazioni/production/photos/909/c6c0eb2f46c2c8d6a...0.0 ms29.4 KiB
reteassociazioni.it/assets/fontawesome-webfont.woff?v=3.0.10.0 ms28.9 KiB
/reteassociazioni/production/photos/903/cb7775ec3849295ed...0.0 ms16.0 KiB
/pagead/managed/js/adsense/m202608310101/show_ads_impl_fy...1209600.0 s162.3 KiB
/reteassociazioni/production/articles/394/45c5935123bfe5c...0.0 ms8.7 KiB
/assets/rete-associazioni-a17bfd1933bd50602342b234cd71e46...0.0 ms4.6 KiB
/reteassociazioni/commons/defaults/organization/logo/thum...0.0 ms4.6 KiB
connect.facebook.net/it_IT/all.js#xfbml=11200.0 s1.8 KiB
reteassociazioni.it/assets/ra-white-e9d8a8477ef27e7a0b26aff8823fd11f.png0.0 ms1.4 KiB
cs.iubenda.com/cookie-solution/confs/js/99428565.js3600.0 s1.7 KiB
reteassociazioni.it/assets/humanstxt-43db8636de8bbf063d42b459033cbb95.png0.0 ms1.2 KiB
/v/t39.30808-1/299032775_487025140094457_7800516090764692...1209600.0 s2.0 KiB

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.3217733442326081] map[node:map[boundingRect:map[bottom:1239 height:567 left:20 right:392 top:672 width:372] lhId:page-16-SECTION nodeLabel:Vuoi iscrivere la tua associazione? path:4,HTML,2,BODY,8,SECTION selector:body.home > section.highlight snippet:<section class="highlight"> type:node] score:0.3135328234674845] map[node:map[boundingRect:map[bottom:7568 height:6299 left:20 right:392 top:1269 width:372] lhId:page-14-SECTION nodeLabel:ACCADEMIA SICULO-NORMANNA - APS A FRANCESCO CUSA IL DIPLOMA HONORIS CAUSA DELL'… path:4,HTML,2,BODY,9,SECTION selector:body.home > section#main snippet:<section id="main"> type:node] score:0.008240520765123579 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/patuaone/v22/ZXuke1cDvLCKLDcimxB44_luFgxbuQ.woff2]]] type:subitems]]]

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.

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
Rete Associazioni Mobile div.row > div.span4 > div.adv > img
s3.amazonaws.com/reteassociazioni/banners/responsive.png98.8 KiB85.6 KiB
MenuClick24 - Menu Digitale ul.unstyled > li > a > img
/assets/portali/menuclick24-menu-digitale-qr-code-fa31240...94.1 KiB73.8 KiB
Lista Nozze 24 ul.unstyled > li > a > img
/assets/portali/listanozze24-lista-nozze-online-debe434d7...79.8 KiB67.3 KiB
Scopri Rete Associazioni div#highlightCarousel > div.carousel-inner > article.item > img
reteassociazioni.it/assets/slide/slide-1-3ac7a2da8ecbcfd1c04052690d91cf82.jpg70.2 KiB60.9 KiB
EveryLog ul.unstyled > li > a > img
/assets/portali/everylog-370-370-d539433ab81d3c468329c7bf...69.1 KiB46.8 KiB
Gruppi Emergenti ul.unstyled > li > a > img
/assets/portali/gruppi-emergenti-9001b21e432859fb8ab58e0e...36.3 KiB29.8 KiB
A FRANCESCO CUSA IL DIPLOMA HONORIS CAUSA DELL'ACCADEMIA SICULO-NORMANNA article.item > a.link-primary > span > img.pull-left
/reteassociazioni/production/articles/500/8ec4beb629df60d...29.5 KiB26.7 KiB
CONCESSO AL “PREMIO DI CULTURA CITTÀ DI MONREALE 2026” L’ALTO PATROCINIO DEL PA… article.item > a.link-primary > span > img.pull-left
/reteassociazioni/production/articles/492/283e67b18b6e322...27.6 KiB24.8 KiB
Conferito a Sigfrido Ranucci il diploma “honoris causa” dell’Accademia Siculo-N… article.item > a.link-primary > span > img.pull-left
/reteassociazioni/production/articles/493/ca7027a4f6f0887...25.1 KiB22.3 KiB
div.carousel-inner > div.item > a > img div.carousel-inner > div.item > a > img
/reteassociazioni/production/photos/909/c6c0eb2f46c2c8d6a...29.1 KiB18.0 KiB
ACCADEMIA SICULO-NORMANNA - APS ul.unstyled > li > a > img
/reteassociazioni/production/organizations/872/46bb72bd6c...10.4 KiB9.3 KiB
Leather Club Roma ul.unstyled > li > a > img
/reteassociazioni/production/organizations/874/527616111d...10.3 KiB9.3 KiB
Ripetizioni tutte le materie scuole medie e superiori div.articles-container > article.item > span > img
/reteassociazioni/production/articles/394/45c5935123bfe5c...8.4 KiB4.3 KiB
Women for Progress 2026: vince il Kenya con un progetto per le detenute article.item > a.link-primary > span > img.pull-left
/reteassociazioni/production/articles/499/af08ed0295be0af...6.8 KiB4.0 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-3-IMG
nodeLabel: Scopri Rete Associazioni
path: 4,HTML,2,BODY,8,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,ARTICLE,0,IMG
selector: div#highlightCarousel > div.carousel-inner > article.item > img
snippet: <img alt="Scopri Rete Associazioni" src="/assets/slide/slide-1-3ac7a2da8ecbcfd1c04052690d91cf82.jpg">

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.

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
s3.amazonaws.com/reteassociazioni/banners/responsive.pnghttp/1.1
/reteassociazioni/production/articles/500/8ec4beb629df60d...http/1.1
/reteassociazioni/production/articles/499/af08ed0295be0af...http/1.1
/reteassociazioni/production/articles/493/ca7027a4f6f0887...http/1.1
/reteassociazioni/production/articles/492/283e67b18b6e322...http/1.1
/reteassociazioni/production/articles/490/7ac1087f9bda478...http/1.1
/reteassociazioni/production/articles/488/4ee29ecba0babb0...http/1.1
/reteassociazioni/production/articles/394/45c5935123bfe5c...http/1.1
/reteassociazioni/production/photos/909/c6c0eb2f46c2c8d6a...http/1.1
/reteassociazioni/production/photos/908/d76e62b451ed739a7...http/1.1
/reteassociazioni/production/photos/907/e505c51763d4d037d...http/1.1
/reteassociazioni/production/photos/906/add1e2168587859d3...http/1.1
/reteassociazioni/production/photos/903/cb7775ec3849295ed...http/1.1
/reteassociazioni/production/photos/909/805a86c85e2a15d8e...http/1.1
/reteassociazioni/production/photos/908/eeeb9e424c2581ed7...http/1.1
/reteassociazioni/production/photos/907/a395574fce8b454fb...http/1.1
/reteassociazioni/production/photos/906/abde48879d4edd84e...http/1.1
/reteassociazioni/production/photos/903/a20e9090f812718ee...http/1.1
/reteassociazioni/production/organizations/875/6c600bfe4d...http/1.1
/reteassociazioni/production/organizations/874/527616111d...http/1.1
/reteassociazioni/production/organizations/873/49b1678fb8...http/1.1
/reteassociazioni/production/organizations/872/46bb72bd6c...http/1.1
/reteassociazioni/production/organizations/871/c3c3a415ac...http/1.1
/reteassociazioni/commons/defaults/organization/logo/thum...http/1.1

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Vuoi iscrivere la tua associazione? body.home > section.highlight
0.314
ACCADEMIA SICULO-NORMANNA - APS A FRANCESCO CUSA IL DIPLOMA HONORIS CAUSA DELL'… body.home > section#main
0.008

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 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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in a sub frame.Actionable

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: 0.0 ms 36.5 KiB
URLTransfer SizeEst Savings
reteassociazioni.it/assets/frontpage-f29e7d3037083f29a02ebbf6a6139eb2.css32.5 KiB26.3 KiB
11.7 KiB10.1 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
Scopri Rete Associazioni div#highlightCarousel > div.carousel-inner > article.item > img
reteassociazioni.it/assets/slide/slide-1-3ac7a2da8ecbcfd1c04052690d91cf82.jpg
EveryLog ul.unstyled > li > a > img
/assets/portali/everylog-370-370-d539433ab81d3c468329c7bf...
Rete Associazioni Mobile div.row > div.span4 > div.adv > img
s3.amazonaws.com/reteassociazioni/banners/responsive.png
MenuClick24 - Menu Digitale ul.unstyled > li > a > img
/assets/portali/menuclick24-menu-digitale-qr-code-fa31240...
Lista Nozze 24 ul.unstyled > li > a > img
/assets/portali/listanozze24-lista-nozze-online-debe434d7...
div.carousel-inner > div.active > a > img div.carousel-inner > div.active > a > img
/reteassociazioni/production/photos/909/c6c0eb2f46c2c8d6a...
Gruppi Emergenti ul.unstyled > li > a > img
/assets/portali/gruppi-emergenti-9001b21e432859fb8ab58e0e...
Ripetizioni tutte le materie scuole medie e superiori div.articles-container > article.item > span > img
/reteassociazioni/production/articles/394/45c5935123bfe5c...
Pro loco Fiesso Umbertiano ul.unstyled > li > a > img
/reteassociazioni/production/organizations/875/6c600bfe4d...
Leather Club Roma ul.unstyled > li > a > img
/reteassociazioni/production/organizations/874/527616111d...
Associazione Campania In Ascolto ul.unstyled > li > a > img
/reteassociazioni/production/organizations/873/49b1678fb8...
ACCADEMIA SICULO-NORMANNA - APS ul.unstyled > li > a > img
/reteassociazioni/production/organizations/872/46bb72bd6c...
La carica dei 101 ASD ul.unstyled > li > a > img
/reteassociazioni/production/organizations/871/c3c3a415ac...
Associazione Coro Altotiberino ul.unstyled > li > a > img
/reteassociazioni/commons/defaults/organization/logo/thum...
Humanstxt div.span4 > div.follow-us > a > img
reteassociazioni.it/assets/humanstxt-43db8636de8bbf063d42b459033cbb95.png
Laboratori per bambini div.articles-container > article.item > span > img
/reteassociazioni/production/articles/395/9ccc83dc5dc9a59...

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

Document request latency
Optimize DOM size
Forced reflow
LCP breakdown
Optimize viewport for mobile
Minify CSS
Minify JavaScript
JavaScript execution time 0.9 s
Minimizes main-thread work 2.0 s
Avoid long main-thread tasks 10 long tasks found
Network Requests
Network Round Trip Times 20 ms
Server Backend Latencies 200 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Avoid multiple page redirects
Initial server response time was short Root document took 460 ms
INP breakdown
User Timing marks and measures
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.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.row > div.span5 > form.simple_form > button.btn div.row > div.span5 > form.simple_form > button.btn

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
nav.navbar > div.navbar-inner > div.clearfix > a.btn nav.navbar > div.navbar-inner > div.clearfix > a.btn
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div.articles-container > article.item > div.share-content > a.link-primary div.articles-container > article.item > div.share-content > a.link-primary
div#photoCarousel > div.carousel-inner > div.active > a div#photoCarousel > div.carousel-inner > div.active > a
div.carousel-inner > div.active > p > a

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
IL PORTALE DELLE ASSOCIAZONI, FATTO DALLE ASSOCIAZIONI div.span7 > div.logo > a > em
28 Luglio 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
09 Giugno 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
09 Maggio 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
28 Aprile 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
12 Aprile 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
23 Marzo 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
06 Marzo 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
28 Gennaio 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
20 Gennaio 2026 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
29 Agosto 2025 – article.item > a.link-primary > p > span.muted
CONDIVIDI div.articles-container > article.item > div.share-content > a.dropdown-toggle
28 Aprile 2026 – div.articles-container > article.item > p > span.muted
28 Aprile 2026 – div.articles-container > article.item > p > span.muted
29 Agosto 2025 – div.articles-container > article.item > p > span.muted
30 Ottobre 2017 – div.articles-container > article.item > p > span.muted
30 Ottobre 2017 – div.articles-container > article.item > p > span.muted
Copyright © DevInterface srl · Tutti i diritti sono riservati div.container > div.row > div.span7 > p.copyright
Seguici anche su Facebook Twitter div.container > div.row > div.span4 > div.follow-us

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
DevInterface srl div.row > div.span7 > p.copyright > a

These are opportunities to improve the legibility of your content.

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
1 div.photo-carousel > div#photoCarousel > div.carousel-nav > a.active
2 div.photo-carousel > div#photoCarousel > div.carousel-nav > a
3 div.photo-carousel > div#photoCarousel > div.carousel-nav > a
4 div.photo-carousel > div#photoCarousel > div.carousel-nav > a
5 div.photo-carousel > div#photoCarousel > div.carousel-nav > 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
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Image elements have `[alt]` attributes
Form elements have associated labels
`[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
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
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
Heading elements appear in a sequentially-descending order
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
Elements with visible text labels have matching accessible names.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
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
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
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
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
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.
`[lang]` attributes have a valid value
`<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
Identical links have the same purpose.
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.
73

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
/subscribe/post?u=9b3c46cb0214528687b179a38&id=51e0c2cba2Allowed with warning

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
Failed to load resource: net::ERR_CONNECTION_REFUSED

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Mixed content
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
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
92

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

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.

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 have descriptive text
Links are crawlable
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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