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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.

31

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.

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
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

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
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/signals/config/401277253342867?v=2.9.303&r=stable&domain...1200.0 s47.0 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/hbo-logo.png1209600.0 s58.2 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-3.png1209600.0 s47.3 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-1.png1209600.0 s47.2 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/source-logo.png1209600.0 s42.2 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-2.png1209600.0 s41.9 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/grab-logo.png1209600.0 s21.8 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/wheel-logo.png1209600.0 s20.0 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/warner-logo.png1209600.0 s14.9 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/leap-logo.png1209600.0 s12.8 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/theprice-logo.png1209600.0 s8.8 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/usa-country-flag.png1209600.0 s7.2 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/google-logo.png1209600.0 s6.4 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/marriot-logo.png1209600.0 s6.0 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/loreal-logo.png1209600.0 s5.0 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/spain-country-flag.png1209600.0 s4.8 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/hallmark-logo-v2.png1209600.0 s4.6 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/mcdonalds-logo.png1209600.0 s4.6 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/accenture-logo.png1209600.0 s4.6 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/aws-logo.png1209600.0 s4.5 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/jeopardy-logo.png1209600.0 s3.4 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/mastercard-logo.png1209600.0 s3.1 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/france-country-flag.png1209600.0 s3.0 KiB
assets-cdn.123rf.com/ui-components/assets/svg/enhance.svg1209600.0 s3.0 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/germany-country-flag.png1209600.0 s2.7 KiB
assets-cdn.123rf.com/index/static/assets/index-beta/uni-logo-v2.png1209600.0 s1.8 KiB
assets-cdn.123rf.com/ui-components/assets/svg/upload.svg1209600.0 s1.4 KiB
assets-cdn.123rf.com/ui-components/assets/svg/menu.svg1209600.0 s1.4 KiB
assets-cdn.123rf.com/ui-components/assets/svg/pinterest.svg1209600.0 s1.3 KiB
assets-cdn.123rf.com/ui-components/assets/svg/search.svg1209600.0 s1.2 KiB
assets-cdn.123rf.com/ui-components/assets/svg/close.svg1209600.0 s1.1 KiB
assets-cdn.123rf.com/ui-components/assets/svg/camera.svg1209600.0 s1.1 KiB
assets-cdn.123rf.com/ui-components/assets/svg/free.svg1209600.0 s1.1 KiB
assets-cdn.123rf.com/ui-components/assets/svg/instagram-v2.svg1209600.0 s1.0 KiB
assets-cdn.123rf.com/ui-components/assets/svg/whatsapp-v3.svg1209600.0 s1.0 KiB
assets-cdn.123rf.com/ui-components/assets/svg/font-v2.svg1209600.0 s1.0 KiB
assets-cdn.123rf.com/ui-components/assets/svg/license.svg1209600.0 s1003 B
assets-cdn.123rf.com/ui-components/assets/svg/facebook.svg1209600.0 s998 B
assets-cdn.123rf.com/ui-components/assets/svg/chevron-left.svg1209600.0 s980 B
assets-cdn.123rf.com/ui-components/assets/svg/audio.svg1209600.0 s960 B
assets-cdn.123rf.com/ui-components/assets/svg/twitter-v2.svg1209600.0 s935 B
assets-cdn.123rf.com/ui-components/assets/svg/download.svg1209600.0 s932 B
assets-cdn.123rf.com/index/static/fonts/Nunito/Nunito-Bold.woff21209600.0 s447 B
/tr/?id=401277253342867&ev=PageView&dl=https%3A%2F%2Fnl.1...0.0 ms16 B
assets-cdn.123rf.com/index/static/assets/index-beta/hbo-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-3.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-1.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/source-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-2.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/grab-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/wheel-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/warner-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/leap-logo.png1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/gradient/123rf-logo-gradient.svg1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/theprice-logo.png1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/enhance.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/enhance-black.svg1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/usa-country-flag.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/google-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/marriot-logo.png1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/ai-tools-icons/ai-bg-blur.svg1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/loreal-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/spain-country-flag.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/hallmark-logo-v2.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/mcdonalds-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/accenture-logo.png1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/all-images.svg1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/aws-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/jeopardy-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/mastercard-logo.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/france-country-flag.png1209600.0 s0 B
/ui-components/assets/svg/ai-tools-icons/ai-img-generator...1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/ai-tools-icons/ai-bg-removal.svg1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/germany-country-flag.png1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/money.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/instagram-v2.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/license.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/camera.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/ai-tools-icons/ai-img-upscaler.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/language.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/vector.svg1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/introducing-sphere.png1209600.0 s0 B
assets-cdn.123rf.com/index/static/assets/index-beta/uni-logo-v2.png1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/free-v2.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/free.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/font-size.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/audio-v2.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/font-v2.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/download.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/whatsapp-v3.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/audio.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/footage.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/upload.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/menu.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/photos.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/pinterest.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/search.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/close.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/facebook.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/chevron-right.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/chevron-down.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/chevron-left.svg1209600.0 s0 B
assets-cdn.123rf.com/ui-components/assets/svg/twitter-v2.svg1209600.0 s0 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.

URLResource SizeEst Savings
HBO Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_bigLogos__AtvJk > img.TrustedPartners_bigLogoImage__inml5
assets-cdn.123rf.com/index/static/assets/index-beta/hbo-logo.png57.7 KiB56.1 KiB
Fonts div.ThumbnailImages_ThumbnailImages__9Ik2a > div.ThumbnailImages_column__RHJIh > a.ThumbnailImages_MediaThumbnail__FiXPR > img.ThumbnailImages_imgTag__2gpra
/index/_next/image/?url=https://assets-cdn.123rf.com/inde...56.6 KiB49.2 KiB
Source Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/source-logo.png41.8 KiB40.4 KiB
Alles-in-één platform section.FeaturesHighlight_featuresHighlight__nI8cy > div.FeaturesHighlight_highlightsContainer__P1p9S > div.FeaturesHighlight_highlightItem__Uvt0K > img.FeaturesHighlight_featureImage__e9DYJ
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-3.png46.9 KiB36.3 KiB
Onbeperkte stockfoto downloads section.FeaturesHighlight_featuresHighlight__nI8cy > div.FeaturesHighlight_highlightsContainer__P1p9S > div.FeaturesHighlight_highlightItem__Uvt0K > img.FeaturesHighlight_featureImage__e9DYJ
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-1.png46.7 KiB36.2 KiB
Commercieel veilige stockfoto's section.FeaturesHighlight_featuresHighlight__nI8cy > div.FeaturesHighlight_highlightsContainer__P1p9S > div.FeaturesHighlight_highlightItem__Uvt0K > img.FeaturesHighlight_featureImage__e9DYJ
assets-cdn.123rf.com/index/static/assets/index-beta/feature-highlight-2.png41.5 KiB30.9 KiB
Grab Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/grab-logo.png21.4 KiB20.6 KiB
Vectors div.ThumbnailImages_ThumbnailImages__9Ik2a > div.ThumbnailImages_column__RHJIh > a.ThumbnailImages_MediaThumbnail__FiXPR > img.ThumbnailImages_imgTag__2gpra
/index/_next/image/?url=https://assets-cdn.123rf.com/inde...30.6 KiB19.9 KiB
AI Suite div.ThumbnailImages_ThumbnailImages__9Ik2a > div.ThumbnailImages_column__RHJIh > a.ThumbnailImages_MediaThumbnail__FiXPR > img.ThumbnailImages_imgTag__2gpra
/index/_next/image/?url=https://assets-cdn.123rf.com/inde...26.2 KiB18.8 KiB
Wheel Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/wheel-logo.png19.6 KiB18.8 KiB
Warner Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_bigLogos__AtvJk > img.TrustedPartners_bigLogoImage__inml5
assets-cdn.123rf.com/index/static/assets/index-beta/warner-logo.png14.5 KiB14.2 KiB
Leap Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/leap-logo.png12.3 KiB12.0 KiB
The Price Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/theprice-logo.png8.4 KiB8.1 KiB
USA div.userfeedbacksection_carouselCardContainer___peRl > div.userfeedbacksection_feedbackAuthorContainer__mEB_A > span > img.userfeedbacksection_countryFlagIcon__us2QA
assets-cdn.123rf.com/index/static/assets/index-beta/usa-country-flag.png6.8 KiB6.7 KiB
Google Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/google-logo.png6.0 KiB5.2 KiB
Marriot Logo section.TrustedPartners_trustedPartners__xcXdX > div.TrustedPartners_logosContainer__WxOWb > div.TrustedPartners_smallLogos__HYQaD > img.TrustedPartners_smallLogoImage__cFMs5
assets-cdn.123rf.com/index/static/assets/index-beta/marriot-logo.png5.6 KiB4.6 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: 7.7 s
URLTime Spent
123rf.com/1.2 s
www.123rf.com/6.5 s
nl.123rf.com/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

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.

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.

CategoryTime Spent
Script Evaluation5.8 s
Other4.9 s
Style & Layout1.1 s
Script Parsing & Compilation1.1 s
Rendering763 ms
Garbage Collection330 ms
Parse HTML & CSS304 ms

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
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●User Timing marks and measures 13 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 1 animated element found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 90 ms
●Server Backend Latencies 560 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 280 ms
○INP breakdown
○LCP request discovery
○Avoid large layout shifts
90

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

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Opties Zoeken op afbeelding Alle Beelden Stockfoto's Illustraties Video Audio L… form.SearchBarV2__form > div.SearchBarV2__searchFilterCategoryDropdown > div.SearchFilterCategoryDropdownV2__container > div.SearchFilterCategoryDropdownV2__list

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.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

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]`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
●Form elements have associated labels
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●ARIA input fields have accessible names
●Elements use only permitted ARIA attributes
●ARIA toggle fields have accessible names
●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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○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
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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
○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.
81

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

●Uses HTTPS
●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 browser errors logged to the console
●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
○Redirects HTTP traffic to HTTPS
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`

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