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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

70

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.

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
video-thumbnail div.col-lg-7 > div.position-relative > div#video-container-24a23 > img.video-thumbnail
psichologie.cz/images/home/home-hero.webp129.0 KiB76.6 KiB
Tellington TTouch div.course-card > div.part > a.img-container > img
psichologie.cz/media/v2uncwub.webp21.7 KiB17.7 KiB
Kozokurz - Principy tréninku psů div.course-card > div.part > a.img-container > img
psichologie.cz/media/s3f0ky0c.webp20.5 KiB16.4 KiB
Vůdce smečky div.course-card > div.part > a.img-container > img
psichologie.cz/media/1djbi02t.webp19.5 KiB15.5 KiB
Čmuchací hry div.course-card > div.part > a.img-container > img
psichologie.cz/media/a45r3wct.webp18.7 KiB14.6 KiB
Tahání na vodítku div.course-card > div.part > a.img-container > img
psichologie.cz/media/ktckgukq.webp18.6 KiB14.6 KiB
Psí fitness II - rovnováha a posilování psa div.course-card > div.part > a.img-container > img
psichologie.cz/media/n1mldtup.webp18.1 KiB14.0 KiB
Dogdancing - Psí triky 1 div.course-card > div.part > a.img-container > img
psichologie.cz/media/41fc5bkp.webp16.3 KiB12.3 KiB
Dog puller div.course-card > div.part > a.img-container > img
psichologie.cz/media/xwnin4dz.webp16.2 KiB12.1 KiB
Spolehlivost bez vodítka div.course-card > div.part > a.img-container > img
psichologie.cz/media/lwtf4rm5.webp16.1 KiB12.0 KiB
Moderní trénink psa pro zaneprázdněné div.course-card > div.part > a.img-container > img
psichologie.cz/media/fh0phot1.webp16.0 KiB11.9 KiB
Enrichment pro psy div.course-card > div.part > a.img-container > img
psichologie.cz/media/petrrqro.webp16.0 KiB11.9 KiB
Soužití malého dítěte a psa div.course-card > div.part > a.img-container > img
psichologie.cz/media/prtkjdv0.webp15.8 KiB11.7 KiB
Dogdancing - Psí triky 2 div.course-card > div.part > a.img-container > img
psichologie.cz/media/3brvnwqp.webp15.4 KiB11.4 KiB
Funkční přivolání psa div.course-card > div.part > a.img-container > img
psichologie.cz/media/bcsd5wgi.webp15.2 KiB11.2 KiB
Nosework div.course-card > div.part > a.img-container > img
psichologie.cz/media/mppskvur.webp19.0 KiB11.2 KiB
Jak naučit psa ČEKEJ div.course-card > div.part > a.img-container > img
psichologie.cz/media/4o3kleta.webp15.1 KiB11.2 KiB
Skákání psa při vítání div.course-card > div.part > a.img-container > img
psichologie.cz/media/x0ixcbpj.webp12.3 KiB9.1 KiB
Vodítko jako nápověda div.course-card > div.part > a.img-container > img
psichologie.cz/media/ol0cjq1p.webp16.8 KiB8.9 KiB
10 nejdůležitějších povelů div.course-card > div.part > a.img-container > img
psichologie.cz/media/420cjcer.webp16.5 KiB8.7 KiB
Dog frisbee div.course-card > div.part > a.img-container > img
psichologie.cz/media/42yteqnu.webp11.6 KiB8.5 KiB
Ošetření se souhlasem zvířete div.course-card > div.part > a.img-container > img
psichologie.cz/media/lamfu4rz.webp11.5 KiB8.5 KiB
Alchymie socializace psů na psy div.course-card > div.part > a.img-container > img
psichologie.cz/media/5qaatroj.webp11.3 KiB8.4 KiB
Agility školička div.course-card > div.part > a.img-container > img
psichologie.cz/media/5jpmdr32.webp11.2 KiB8.3 KiB
Strach psa ze zvuků div.course-card > div.part > a.img-container > img
psichologie.cz/media/4nva2vk5.webp10.8 KiB8.0 KiB
Klikr trénink div.course-card > div.part > a.img-container > img
psichologie.cz/media/3fvvv4zl.webp10.1 KiB7.4 KiB
Komunikační signály pro pokročilé div.course-card > div.part > a.img-container > img
psichologie.cz/media/k2hed0si.webp14.5 KiB7.2 KiB
Psí fitness I. - pes v pohybu div.course-card > div.part > a.img-container > img
psichologie.cz/media/sziitrvs.webp14.3 KiB7.2 KiB
Kočkokurz - výchova a trénink kočky div.course-card > div.part > a.img-container > img
psichologie.cz/media/snbjiwor.webp12.8 KiB6.4 KiB
Moje první štěně div.course-card > div.part > a.img-container > img
psichologie.cz/media/5k0yfxqj.webp10.1 KiB5.1 KiB
13 nebezpečných věcí, kterými můžeme pejskovi ublížit div.course-card > div.part > a.img-container > img
psichologie.cz/media/jhoiiwy5.webp9.6 KiB4.8 KiB

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

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.

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.

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

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.

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

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.

URLTotal CPU TimeScript EvaluationScript Parse
psichologie.cz/_framework/blazor.web.js1.8 s1.7 s3.0 ms
Unattributable598 ms234 ms0.0 ms
psichologie.cz/366 ms4.2 ms0.4 ms
psichologie.cz/_framework/dotnet.native.7dko1v9rxe.js324 ms322 ms0.2 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.

CategoryTime Spent
Script Evaluation2.3 s
Other448 ms
Style & Layout257 ms
Parse HTML & CSS103 ms
Rendering57 ms
Garbage Collection9.1 ms
Script Parsing & Compilation9.0 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

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.2 KiB
URLTransfer SizeEst Savings
psichologie.cz/css/bootstrap-custom.gubimwjwap.css13.8 KiB3.2 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 27.7 KiB
URLTransfer SizeEst Savings
psichologie.cz/_framework/dotnet.native.7dko1v9rxe.js61.4 KiB27.7 KiB

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 27.1 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 114.5 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
Kniha div.row > div.col-lg-7 > div.book-container > img.book
psichologie.cz/images/book.webp
Podcast logo div.podcast > div.top > div.podcast-logo > img
psichologie.cz/images/home/podcast-logo.webp
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/ct1.svg
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/social-impact-award.svg
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/pozitivni-zpravy.png
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/nova.svg
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/forbes.svg
Dog div.row > div.col-12 > div.dog-container > img.doghead-smiling
psichologie.cz/images/dog-silouethes/doghead-smiling.svg
Psíchologie logo div.col-12 > div.d-flex > div > img.psichologie-logo
psichologie.cz/images/psichologie-logo-white.svg
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/cesky-rozhlas.svg
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/cesky-rozhlas.svg
Logo div.carousel-content > div.carousel-item > a.external-article > img.logo
psichologie.cz/images/logos/idnes.svg

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
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Avoid long main-thread tasks 7 long tasks found
Avoid non-composited animations 5 animated elements found
Network Requests
Network Round Trip Times 30 ms
Server Backend Latencies 70 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 100 ms
Avoid large layout shifts 3 layout shifts found
INP breakdown
User Timing marks and measures
93

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.

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
Prozkoumat kurzy div.mt-20 > button.btn > div.btn-content > span.content
ZDARMA div.course-card > div.part > div.category-tags > label.small
PRVNÍ PES div.course-card > div.part > div.category-tags > label.small
Detail kurzu div.part > a.btn > div.btn-content > span.content
PRVNÍ PES div.course-card > div.part > div.category-tags > label.small
Detail kurzu div.part > a.btn > div.btn-content > span.content
PROBLÉMOVÁ CHOVÁNÍ div.course-card > div.part > div.category-tags > label.small
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
Detail kurzu div.part > a.btn > div.btn-content > span.content
10 000+ div.row > div.col-lg-5 > h2.m-0 > span.color-blue-2
VIDEO KURZ ZDARMA div.row > div.col-lg-7 > div.book-container > label.floating-tag
PROČ NEBÝT VŮDCE SMEČKY div.d-flex > div.d-flex > div.flex-shrink-1 > h3.m-0
Nejdůležitější pravidlo pro výchovu a trénink psa div.d-flex > div.d-flex > div.flex-shrink-1 > p.mt-10
Odesláním souhlasíte, že vám můžeme posílat informace o psích novinkách a kurze… div.d-flex > div.d-flex > div.flex-shrink-1 > small.mt-15
Zásady zpracování osobních údajů div.d-flex > div.flex-shrink-1 > small.mt-15 > a.color-grey-2
PODCAST div.podcast > div.top > h3.m-0 > label.small
BLOG div.blog > div.top > h3.m-0 > label.small
Psichologie. Oceněný projekt tréninku psů bez klasických trestů přeroste Česko div.carousel-content > div.carousel-item > a.external-article > p.medium
Rozhovor s Tomášem Nushartem v pořadu Host Lucie Výborné div.carousel-content > div.carousel-item > a.external-article > p.medium
Psa za špatnou reakci na povel netrestejte. Můžete za to vy, ne on. div.carousel-content > div.carousel-item > a.external-article > p.medium
Pes a pozitivní výchova a soužití div.carousel-content > div.carousel-item > a.external-article > p.medium
KAŽDÝCH 14 DNÍ ZDARMA div.row > div.col-12 > div.bckgr-violet-1 > label.floating-tag
Copyright © 2026 Psichologie.cz s.r.o. div.bckgr-grey-2 > div.container > div.d-flex > small
Přijmout vše div.cookie-consent-actions > button.btn > div.btn-content > span.content

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
13 nebezpečných věcí, kterými můžeme pejskovi ublížit div.course-card > div.part > div > h5.mt-0
Separační úzkost div.course-card > div.part > div > h5.mt-0
Vodítko jako nápověda div.course-card > div.part > div > h5.mt-0
Nosework div.course-card > div.part > div > h5.mt-0
#118 Daniel Kortus: Jak poznat klimatickou dezinformaci a může za změnu klimatu… div.d-flex > div.d-flex > div > h5.mt-0
Láska na čtyřech tlapkách: První máj očima pejskařů div.blog-post-preview > div.text > a.text-decoration-none > h5.mt-0
tomas@psichologie.cz div.col-12 > div.d-flex > div > h5.m-0

These are opportunities to improve keyboard navigation in your application.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Kurzy div.main-menu-container > div.d-flex > nav.d-flex > a.nav-item
Podcast div.main-menu-container > div.d-flex > nav.d-flex > a.nav-item
Blog div.main-menu-container > div.d-flex > nav.d-flex > a.nav-item
Kniha div.main-menu-container > div.d-flex > nav.d-flex > a.nav-item
E-book zdarma div.main-menu-container > div.d-flex > nav.d-flex > a.nav-item
Přihlásit se div.page > div.main-menu-container > div.d-flex > a.right-button
Prozkoumat kurzy div.row > div.col-lg-5 > div.mt-20 > button.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Zobrazit všechny kurzy section#popularni-kurzy > div.container > div.text-center > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Zobrazit všechny kurzy section#problemove-chovani > div.container > div.text-center > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Zobrazit všechny kurzy section#trenink-a-zabava > div.container > div.text-center > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Detail kurzu div.carousel-item > div.course-card > div.part > a.btn
Zobrazit všechny kurzy section#psi-sporty > div.container > div.text-center > a.btn
Koupit knihu div.row > div.col-lg-5 > div.mt-40 > a.btn
Získat e-book ZDARMA form.w-100 > div.d-flex > div.w-100 > button.btn
Zásady zpracování osobních údajů div.d-flex > div.flex-shrink-1 > small.mt-15 > a.color-grey-2
Zobrazit starší epizody div.podcast > div.border-radius-24 > div.text-center > a.btn
Láska na čtyřech tlapkách: První máj očima pejskařů div.blog-posts > div.blog-post-preview > div.text > a.text-decoration-none
Co když pes sežere hračku? div.blog-posts > div.blog-post-preview > div.text > a.text-decoration-none
Proč se pes točí před ulehnutím dokola? div.blog-posts > div.blog-post-preview > div.text > a.text-decoration-none
Co když pes sežere, co nemá? div.blog-posts > div.blog-post-preview > div.text > a.text-decoration-none
Zobrazit starší články div.row > div.blog > div.text-center > a.btn
Psichologie. Oceněný projekt tréninku psů bez klasických trestů přeroste Česko div.carousel-wrapper > div.carousel-content > div.carousel-item > a.external-article
Rozhovor s Tomášem Nushartem v pořadu Host Lucie Výborné div.carousel-wrapper > div.carousel-content > div.carousel-item > a.external-article
Psa za špatnou reakci na povel netrestejte. Můžete za to vy, ne on. div.carousel-wrapper > div.carousel-content > div.carousel-item > a.external-article
Pes a pozitivní výchova a soužití div.carousel-wrapper > div.carousel-content > div.carousel-item > a.external-article
Přihlásit div.position-relative > form.w-100 > div.d-flex > button.btn
Zásady zpracování osobních údajů div.left-main-flex > div.position-relative > small.mt-15 > a
Escalate Ltd div.d-flex > div.d-none > small > a
Kurzy div.col-12 > div.menu-container > div.col-6 > a
Podcast div.col-12 > div.menu-container > div.col-6 > a
Blog div.col-12 > div.menu-container > div.col-6 > a
Kniha div.col-12 > div.menu-container > div.col-6 > a.hovno
E-book zdarma div.col-12 > div.menu-container > div.col-6 > a
Ochrana osobních údajů div.d-flex > div.d-flex > small > a
Obchodní podmínky div.d-flex > div.d-flex > small > a
Nastavení div#cookieConsentBanner > div.cookie-consent-container > div.cookie-consent-actions > button.btn
Odmítnout vše div#cookieConsentBanner > div.cookie-consent-container > div.cookie-consent-actions > button.btn
Přijmout vše div#cookieConsentBanner > div.cookie-consent-container > div.cookie-consent-actions > button.btn
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>`
`[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
`[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 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
Links are distinguishable without relying on color.
Links have a discernible name
Touch targets have sufficient size and spacing.
Document has a main landmark.
Image elements do not have `[alt]` attributes that are redundant text.
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Deprecated ARIA roles were not used
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
`[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
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
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.
No element has a `[tabindex]` value greater than 0
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
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.
100

Best Practices

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 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 DOM-based XSS with Trusted Types
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
Detected JavaScript libraries
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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