Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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.

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.

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:0.114942] map[node:map[boundingRect:map[bottom:3416 height:3276 left:0 right:412 top:140 width:412] lhId:page-6-MAIN nodeLabel:Home Iets melden Verhuizing doorgeven Maak een afspraak Paspoort / Identiteitsk… path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN selector:div > div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content snippet:<main id="skip-links-content" class="cascada LandingPage-module-scss-module__rUUhCG__contentContainer content-w…" style="scroll-margin: 5rem;"> type:node] score:0.10075 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1025 height:195 left:33 right:379 top:830 width:346] lhId:page-14-IMG nodeLabel:li.item > div.item-image > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,UL,0,LI,1,DIV,0,PICTURE,1,IMG selector:li.item > div.item-image > picture > img snippet:<img loading="lazy" src="https://cuatro.sim-cdn.nl/woensdrecht/uploads/styles/teaser_16_9__6/media/…" alt="" width="695" height="391"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:3416 height:2677 left:0 right:412 top:739 width:412] lhId:page-9-DIV nodeLabel:Uitgelicht Woensdrecht denkt vooruit Weet wat je nodig hebt en wat je moet doe… path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV selector:div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content > div#toc-headings-scope snippet:<div id="toc-headings-scope" class="paragraphs Paragraphs-module-scss-module__ZH39Tq__grid"> type:node] score:0.008557 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1025 height:195 left:33 right:379 top:830 width:346] lhId:page-14-IMG nodeLabel:li.item > div.item-image > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,UL,0,LI,1,DIV,0,PICTURE,1,IMG selector:li.item > div.item-image > picture > img snippet:<img loading="lazy" src="https://cuatro.sim-cdn.nl/woensdrecht/uploads/styles/teaser_16_9__6/media/…" alt="" width="695" height="391"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:3416 height:2677 left:0 right:412 top:739 width:412] lhId:page-9-DIV nodeLabel:Uitgelicht Woensdrecht denkt vooruit Weet wat je nodig hebt en wat je moet doe… path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV selector:div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content > div#toc-headings-scope snippet:<div id="toc-headings-scope" class="paragraphs Paragraphs-module-scss-module__ZH39Tq__grid"> type:node] score:0.004879 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1025 height:195 left:33 right:379 top:830 width:346] lhId:page-14-IMG nodeLabel:li.item > div.item-image > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,UL,0,LI,1,DIV,0,PICTURE,1,IMG selector:li.item > div.item-image > picture > img snippet:<img loading="lazy" src="https://cuatro.sim-cdn.nl/woensdrecht/uploads/styles/teaser_16_9__6/media/…" alt="" width="695" height="391"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:812 height:38 left:33 right:379 top:775 width:346] lhId:page-1-H2 nodeLabel:Uitgelicht path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV,0,DIV,1,DIV,0,H2 selector:div#toc-headings-scope > div.paragraph > div.content-wrapper > h2#uitgelicht snippet:<h2 class="LinkableHeading-module-scss-module__b31Qeq__scrollMarginTop ParagraphList-…" id="uitgelicht"> type:node] score:0.000756 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1025 height:195 left:33 right:379 top:830 width:346] lhId:page-14-IMG nodeLabel:li.item > div.item-image > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,UL,0,LI,1,DIV,0,PICTURE,1,IMG selector:li.item > div.item-image > picture > img snippet:<img loading="lazy" src="https://cuatro.sim-cdn.nl/woensdrecht/uploads/styles/teaser_16_9__6/media/…" alt="" width="695" height="391"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.bunny.net/open-sans/files/open-sans-latin-400-normal.woff2]] map[cause:Web font extra:map[type:url value:https://cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/fontawesome6/webfonts/fa-solid-900.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.bunny.net/open-sans/files/open-sans-latin-800-normal.woff2]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.000199] map[node:map[boundingRect:map[bottom:652 height:26 left:44 right:130 top:626 width:86] lhId:page-11-SPAN nodeLabel:Lees voor path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,1,DIV,1,DIV,0,DIV,0,DIV,0,A,0,SPAN,0,SPAN selector:div.rs_skip > a.rsbtn_play > span.rsbtn_left > span.rsbtn_text snippet:<span class="rsbtn_text" aria-hidden="true"> type:node] score:0.000199 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:695 height:16 left:45 right:67 top:679 width:22] lhId:page-15-IMG nodeLabel:div.tolkie-buttons-afterbegin > div#tolkie-separate-container > button#tolkie-separate-tooltip > img path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,1,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,BUTTON,0,IMG selector:div.tolkie-buttons-afterbegin > div#tolkie-separate-container > button#tolkie-separate-tooltip > img snippet:<img alt="" src="data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000…"> type:node]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.017816] map[node:map[boundingRect:map[bottom:3416 height:2677 left:0 right:412 top:739 width:412] lhId:page-9-DIV nodeLabel:Uitgelicht Woensdrecht denkt vooruit Weet wat je nodig hebt en wat je moet doe… path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,2,DIV selector:div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content > div#toc-headings-scope snippet:<div id="toc-headings-scope" class="paragraphs Paragraphs-module-scss-module__ZH39Tq__grid"> type:node] score:0.017816 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:695 height:16 left:45 right:67 top:679 width:22] lhId:page-15-IMG nodeLabel:div.tolkie-buttons-afterbegin > div#tolkie-separate-container > button#tolkie-separate-tooltip > img path:1,HTML,1,BODY,0,DIV,0,DIV,5,DIV,0,DIV,1,DIV,0,MAIN,1,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,BUTTON,0,IMG selector:div.tolkie-buttons-afterbegin > div#tolkie-separate-container > button#tolkie-separate-tooltip > img snippet:<img alt="" src="data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000…"> type:node]]] 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.

URL	Est Savings
/assets/2.11.2/iconFonts/fontawesome6/webfonts/fa-brands-...	25 ms
/assets/2.11.2/iconFonts/fontawesome6/webfonts/fa-solid-9...	20 ms
/assets/2.11.2/iconFonts/opengemeenten/fonts/OpenGemeente...	15 ms
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/toptaken/fonts/toptaken01.woff2	15 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:54.722 source:map[type:text value:[unattributed]]]]

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

value: No additional origins are good candidates for preconnecting

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.

URL	Transfer Size	Duration
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/fontawesome6/css/fontawesome.6.7.2.css	20.8 KiB	152 ms
cuatro.sim-cdn.nl/assets/2.11.2/fonts/openDyslexic/css/open-dyslexic.css	524 B
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/fontawesome6/css/v5-font-face.css	1.2 KiB
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/fontawesome6/css/v4-shims.css	4.5 KiB
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/opengemeenten/css/opengemeenten.css	2.2 KiB
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/toptaken/css/toptaken.css	1.4 KiB
/css?family=open-sans%3A300%2C300i%2C400%2C400i%2C500%2C5...	3.2 KiB	759 ms

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.

Request	Cache TTL	Transfer Size
/woensdrecht/uploads/styles/large_5x2_2560x1024/media/nat...	86400.0 s	772.2 KiB
app.tolkie.nl/tolkie-iframe.js	3600.0 s	160.3 KiB
app.tolkie.nl/	3600.0 s	157.8 KiB
woensdrecht.logging.simanalytics.nl/piwik.js	28800.0 s	133.4 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/image-ma...	86400.0 s	99.2 KiB
woensdrecht.logging.simanalytics.nl/js/container_6B1G1nzY.js	0.0 ms	35.0 KiB
cdn-eu.readspeaker.com/script/5974/webReader/webReader.js?pids=wr	0.0 ms	28.1 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/gemeente...	86400.0 s	60.3 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/trouwen....	86400.0 s	44.9 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/wmo.jpg?...	86400.0 s	44.1 KiB
/script/5974/webReader/r/r2918/ReadSpeaker.Styles-Button....	86400.0 s	39.9 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/werk-aan...	86400.0 s	37.8 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/afbeeldi...	86400.0 s	30.9 KiB
app.tolkie.nl/fonts/atkinson-hyperlegible-next-latin-700-normal.woff2	3600.0 s	13.4 KiB
app.tolkie.nl/tolkie-iframe.min.css	3600.0 s	9.6 KiB
/woensdrecht/uploads/2023-11/logo-gemeente-woensdrecht_fu...	86400.0 s	9.9 KiB
app.tolkie.nl/tolkie-client.min.css	3600.0 s	3.4 KiB
cb.vrmwb.nl/b_gemeente.js	0.0 ms	254 B
/plugins/HeatmapSessionRecording/configs.php?idsite=2&tra...	0.0 ms	186 B

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.

	URL	Resource Size	Est Savings
li.item > div.item-image > picture > img `li.item > div.item-image > picture > img`	/woensdrecht/uploads/styles/teaser_16_9__6/media/image-ma...	98.7 KiB	65.1 KiB
li.item > div.item-image > picture > img `li.item > div.item-image > picture > img`	/woensdrecht/uploads/styles/teaser_16_9__6/media/gemeente...	59.8 KiB	26.2 KiB

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.

Element	Layout shift score
Home Iets melden Verhuizing doorgeven Maak een afspraak Paspoort / Identiteitsk… `div > div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content`	0.101
Uitgelicht Woensdrecht denkt vooruit Weet wat je nodig hebt en wat je moet doe… `div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content > div#toc-headings-scope`	0.018
Uitgelicht Woensdrecht denkt vooruit Weet wat je nodig hebt en wat je moet doe… `div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content > div#toc-headings-scope`	0.009
Uitgelicht Woensdrecht denkt vooruit Weet wat je nodig hebt en wat je moet doe… `div#content > div.LandingPage-module-scss-module__rUUhCG__contentWrapper > main#skip-links-content > div#toc-headings-scope`	0.005
Uitgelicht `div#toc-headings-scope > div.paragraph > div.content-wrapper > h2#uitgelicht`	0.001
Lees voor `div.rs_skip > a.rsbtn_play > span.rsbtn_left > span.rsbtn_text`	0.000

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: 300 ms 76.9 KiB

URL	Transfer Size	Est Savings
/script/5974/webReader/r/r2918/ReadSpeaker.Styles-Button....	39.4 KiB	36.6 KiB
cuatro.sim-cdn.nl/assets/2.11.2/iconFonts/fontawesome6/css/fontawesome.6.7.2.css	20.4 KiB	20.1 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/13udajw07hy5x.css	12.2 KiB	10.1 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/1og6l3qexk3kd.css	11.1 KiB	10.1 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: 450 ms 168.0 KiB

URL	Transfer Size	Est Savings
woensdrecht.logging.simanalytics.nl/piwik.js	133.1 KiB	84.3 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/1m4gctn363sgm.js	35.6 KiB	31.2 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/1rjo498pd5aft.js	85.1 KiB	31.1 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/35syyyqrwko7q.js	61.4 KiB	21.4 KiB

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.woensdrecht.nl/	1.3 s	14 ms	1.8 ms
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/35syyyqrwko7q.js	1.2 s	996 ms	37 ms
Unattributable	1.1 s	24 ms	0.0 ms
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/turbopack-09rluw6-h057u.js	365 ms	361 ms	2.1 ms
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/turbopack-3nmxj2uqko9id.js	287 ms	282 ms	1.8 ms
app.tolkie.nl/	202 ms	158 ms	3.2 ms
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/34z49_rtj8wzg.js	139 ms	119 ms	14 ms
woensdrecht.logging.simanalytics.nl/piwik.js	97 ms	71 ms	18 ms
cdn-eu.readspeaker.com/script/5974/webReader/webReader.js?pids=wr	54 ms	37 ms	11 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	2.1 s
Other	1.2 s
Style & Layout	1.0 s
Script Parsing & Compilation	314 ms
Parse HTML & CSS	286 ms
Rendering	159 ms
Garbage Collection	85 ms

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/woensdrecht/uploads/styles/large_5x2_2560x1024/media/nat...	772.2 KiB
app.tolkie.nl/flags.svg	188.0 KiB
app.tolkie.nl/tolkie-iframe.js	160.3 KiB
app.tolkie.nl/	157.8 KiB
/assets/2.11.2/iconFonts/fontawesome6/webfonts/fa-solid-9...	155.1 KiB
woensdrecht.logging.simanalytics.nl/piwik.js	133.4 KiB
/assets/2.11.2/iconFonts/fontawesome6/webfonts/fa-brands-...	116.5 KiB
/woensdrecht/uploads/styles/teaser_16_9__6/media/image-ma...	99.2 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/1rjo498pd5aft.js	89.4 KiB
cuatro.sim-cdn.nl/assets/2.11.2/_next/static/chunks/35syyyqrwko7q.js	61.8 KiB

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

●Document request latency

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 4 user timings

●Avoid long main-thread tasks 16 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 250 ms

●Server Backend Latencies 640 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 290 ms

○INP breakdown

○LCP request discovery

○Avoid non-composited animations

100

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.

○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

●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

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●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

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` 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

○Form elements have associated labels

○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.

○`<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.

○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.

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.

Source	Description
cdn-eu.readspeaker.com/script/5974/webReader/webReader.js?pids=wr line 3, col 26447	`Uncaught TypeError: rspkr.conf is not a function`

●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 DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

100

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.

○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

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`