C — https://www.smashingmagazine.com

Site Health

Score: 79 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

Content-Security-Policy header is missing

Security › Security Headers

No Content-Security-Policy header found

Security › Content Security Policy

1 link(s) with no accessible text

Accessibility › Link & Button Quality

2 control(s) without accessible label

Accessibility › Form Accessibility

Cross-Origin-Embedder-Policy header is missing

Security › Security Headers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.01 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.07 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

238 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.21 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.11 s

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.

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

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

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

Request	Cache TTL	Transfer Size
www.smashingmagazine.com/css/main.css	0.0 ms	67.1 KiB
www.smashingmagazine.com/css/print.css	0.0 ms	4.2 KiB
files.smashing.media/community-links/rama-krushna-behera-100px-opt.png	86400.0 s	9.2 KiB
files.smashing.media/community-links/tamara-chehayeb-makarem-100px-opt.png	86400.0 s	9.2 KiB
files.smashing.media/community-links/bramus-van-damme-100px-opt.png	86400.0 s	7.8 KiB
files.smashing.media/community-links/juan-diego-rodriguez-100px-opt.png	86400.0 s	7.1 KiB
files.smashing.media/community-links/kyle-van-deusen-100px-opt.png	86400.0 s	6.7 KiB
files.smashing.media/person-of-the-week/emily-anderson-250px.avif	86400.0 s	3.7 KiB
files.smashing.media/community-links/jakub-krehel-100px-opt.png	86400.0 s	2.6 KiB

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.

URL	Est Savings
www.smashingmagazine.com/fonts/MijaBold/Mija_Bold-webfont-subset-v2.woff2	125 ms
www.smashingmagazine.com/fonts/ElenaWebRegular/ElenaWebRegular-subset-v2.woff2	120 ms
/fonts/ElenaWebRegularItalic/ElenaWebRegularItalic-subset...	85 ms
www.smashingmagazine.com/fonts/ElenaWebBold/ElenaWebBold-subset-v2.woff2	75 ms

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.

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

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.

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.

TTI

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.

Estimated savings: 310 ms 61.1 KiB

URL	Transfer Size	Est Savings
www.smashingmagazine.com/css/main.css	67.0 KiB	61.1 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.

Estimated savings: 520 ms 84.0 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-CXX395KXNG	148.9 KiB	84.0 KiB

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

	URL
The Smashing Cat exploring new insights, at Smashing Workshops, of course. `div.col--slim > div.promo-box > a.promo-box__image-link > img.promo-box__image`	www.smashingmagazine.com/images/smashing-cat/cat-in-the-chair.svg
Smashing Magazine `h1.logo > a > picture > img`	www.smashingmagazine.com/images/logo.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

●Forced reflow

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 428 KiB

●JavaScript execution time 0.3 s

●Minimizes main-thread work 1.5 s

●Avoid long main-thread tasks 4 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 10 ms

●Server Backend Latencies 80 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 80 ms

○INP breakdown

○LCP request discovery

○User Timing marks and measures

○Avoid non-composited animations

○Avoid large layout shifts

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.

Failing Elements
Accessibility `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
UX `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
CSS `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
JavaScript `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Performance `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Godstime Aburu `article.article--post > header > span.article--post__author-name > a.red`
wrote `article.article--post > header > span.article--post__author-name > em.light-grey`

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.

Failing Elements
LATEST POSTS `section.curated-articles-container > div.container > div.row > h4.vertical`
COMMUNITY LINKS `section.curated-articles-container > div.container > div.row > h4.vertical`
div.container > div.col-12 > div.footer__topics > h4#topics `div.container > div.col-12 > div.footer__topics > h4#topics`

These are opportunities to improve keyboard navigation in your application.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Failing Elements
Menu `body#home > header.global-header > nav.main-nav > ul.main-nav__primary`
Accessibility UX CSS JavaScript Performance Design Figma Wallpapers React Vue R… `body#home > header#all-topics > nav.subnav > ul.subnav__primary`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○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

●Input buttons have discernible text.

●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.

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

●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

●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.

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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

○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 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.

○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

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

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

●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

○Use a strong HSTS policy

○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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

100

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

457 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

668 ms

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

7 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

502 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

668 ms

Detailed Report

Audit breakdown by category with detailed findings.

100

Performance

Insights

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

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

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

Request	Cache TTL	Transfer Size
www.smashingmagazine.com/css/main.css	0.0 ms	67.6 KiB
www.smashingmagazine.com/css/print.css	0.0 ms	4.3 KiB
files.smashing.media/community-links/rama-krushna-behera-100px-opt.png	86400.0 s	9.4 KiB
files.smashing.media/community-links/tamara-chehayeb-makarem-100px-opt.png	86400.0 s	9.2 KiB
files.smashing.media/community-links/bramus-van-damme-100px-opt.png	86400.0 s	7.6 KiB
files.smashing.media/community-links/juan-diego-rodriguez-100px-opt.png	86400.0 s	7.1 KiB
files.smashing.media/community-links/kyle-van-deusen-100px-opt.png	86400.0 s	6.7 KiB
files.smashing.media/person-of-the-week/emily-anderson-250px.avif	86400.0 s	3.7 KiB
files.smashing.media/community-links/jakub-krehel-100px-opt.png	86400.0 s	2.6 KiB

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

lhId: page-0-IMG

nodeLabel: The Smashing Cat exploring new insights, at Smashing Workshops, of course.

path: 1,HTML,1,BODY,8,MAIN,0,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,0,A,0,IMG

selector: div.col--slim > div.promo-box > a.promo-box__image-link > img.promo-box__image

snippet: <img src="/images/smashing-cat/cat-in-the-chair.svg" class="promo-box__image" width="258" loading="eager" decoding="async" alt="The Smashing Cat exploring new insights, at Smashing Workshops, of course.">

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.

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

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

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.

URL	Est Savings
www.smashingmagazine.com/fonts/ElenaWebBold/ElenaWebBold-subset-v2.woff2	20 ms
/fonts/ElenaWebRegularItalic/ElenaWebRegularItalic-subset...	20 ms
www.smashingmagazine.com/fonts/ElenaWebRegular/ElenaWebRegular-subset-v2.woff2	15 ms
www.smashingmagazine.com/fonts/MijaBold/Mija_Bold-webfont-subset-v2.woff2	15 ms

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

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.

Estimated savings: 20 ms 61.0 KiB

URL	Transfer Size	Est Savings
www.smashingmagazine.com/css/main.css	67.5 KiB	61.0 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.

Estimated savings: 0.0 ms 83.5 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-CXX395KXNG	148.3 KiB	83.5 KiB

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

	URL
The Smashing Cat exploring new insights, at Smashing Workshops, of course. `div.col--slim > div.promo-box > a.promo-box__image-link > img.promo-box__image`	www.smashingmagazine.com/images/smashing-cat/cat-in-the-chair.svg
Smashing Magazine `h1.logo > a > picture > img`	www.smashingmagazine.com/images/logo.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

●Forced reflow

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Time to Interactive 0.7 s

●Max Potential First Input Delay 60 ms

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 437 KiB

●JavaScript execution time 0.1 s

●Minimizes main-thread work 0.5 s

●Avoid long main-thread tasks 1 long task found

●Avoid non-composited animations 13 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 10 ms

●Server Backend Latencies 20 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 70 ms

○INP breakdown

○User Timing marks and measures

○Avoid large layout shifts

Accessibility

Contrast

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

Failing Elements
Accessibility `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
UX `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
CSS `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
JavaScript `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Performance `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Design `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Figma `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Wallpapers `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
React `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Vue `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Round-Ups `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Web Design `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Guides `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`
Business `nav.subnav > ul.subnav__primary > li.subnav-item > a.nav-item-link`

These are opportunities to improve the legibility of your content.

Navigation

Failing Elements
LATEST POSTS `section.curated-articles-container > div.container > div.row > h4.vertical`
COMMUNITY LINKS `section.curated-articles-container > div.container > div.row > h4.vertical`
div.container > div.col-12 > div.footer__topics > h4#topics `div.container > div.col-12 > div.footer__topics > h4#topics`

These are opportunities to improve keyboard navigation in your application.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Failing Elements
Articles Books Events Membership Newsletter More `body#home > header.global-header > nav.main-nav > ul.main-nav__primary`
Accessibility UX CSS JavaScript Performance Design Figma Wallpapers React Vue R… `body#home > header#all-topics > nav.subnav > ul.subnav__primary`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○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

●Input buttons have discernible text.

●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.

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

●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

●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.

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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

○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 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.

○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

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

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

●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

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

100

SEO

○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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Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Navigation

Tables and lists

Best Practices

SEO

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