https://ft.com
Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0
Detailed Report
Audit breakdown by category with detailed findings.
89
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Why this matters
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Why this matters
Performance issues directly impact user engagement and conversion rates.
A long cache lifetime can speed up repeat visits to your page. Learn more about caching.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| consent-manager.ft.com/Notice.8f529.js | 3600.0 s | 91.2 KiB |
| /__origami/service/build/v3/font?version=1.13&font_name=M... | 86400.0 s | 121.4 KiB |
| bloomreach.ft.com/js/exponea.min.js | 3600.0 s | 52.4 KiB |
| consent-manager.ft.com/unified/wrapperMessagingWithoutDetection.js | 3600.0 s | 42.0 KiB |
| /__origami/service/build/v3/font?version=1.13&font_name=F... | 86400.0 s | 64.4 KiB |
| /__origami/service/build/v3/font?font_format=woff2&font_n... | 86400.0 s | 31.8 KiB |
| /__origami/service/build/v3/font?font_format=woff2&font_n... | 86400.0 s | 29.8 KiB |
| cdn.adsafeprotected.com/iasPET.1.js | 0.0 ms | 6.7 KiB |
| static.chartbeat.com/js/chartbeat.js | 86400.0 s | 15.9 KiB |
| consent-notice.ft.com/cmp.js | 3600.0 s | 7.5 KiB |
| consent-manager.ft.com/Notice.30929.css | 3600.0 s | 6.7 KiB |
| static.chartbeat.com/js/chartbeat_mab.js | 86400.0 s | 10.1 KiB |
| cdn.brandmetrics.com/survey/script/45b903c6-675b-4a9b-85db-13385a3d6084.js | 3600.0 s | 3.6 KiB |
| consent-manager.ft.com/polyfills.01516.js | 3600.0 s | 2.3 KiB |
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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:51.767 source:map[type:text value:[unattributed]]] map[reflowTime:33.862 source:map[column:7049 line:0 type:source-location url:https://www.ft.com/__assets/hashed/page-kit/financial-times-o-header.e39ceb699fee.bundle.js urlProvider:network]] map[reflowTime:1.189 source:map[column:57 line:24 type:source-location url:https://static.chartbeat.com/js/chartbeat.js urlProvider:network]]]
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Why this matters
Performance issues directly impact user engagement and conversion rates.
lhId: page-0-IMG
nodeLabel: Iran used Chinese spy satellite to target US bases
path: 1,HTML,1,BODY,4,DIV,5,DIV,0,DIV,2,MAIN,0,DIV,0,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,PICTURE,2,IMG
selector: div.featured-story__image > a.link > picture > img.image
snippet: <img src="https://www.ft.com/__origami/service/image/v2/images/raw/https%3A%2F%2Fd1e…" alt="Iran used Chinese spy satellite to target US bases" class="image image--width-580" pinger-seen="true">
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
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 |
|---|---|---|
| www.ft.com/__assets/hashed/page-kit/579.fc5bb38924ff.css | 28.4 KiB | |
| www.ft.com/__assets/hashed/page-kit/styles.9b047f37ee5e.css | 28.0 KiB | 124 ms |
| www.ft.com/__assets/hashed/page-kit/632.d01de9f81419.css | 28.0 KiB | 124 ms |
| www.ft.com/__assets/hashed/page-kit/page-kit-layout-styles.74508e04204a.css | 13.9 KiB |
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 | |
|---|---|---|---|
Saudi wealth fund resets priorities after decade of heavy spending div.spotlight-story-main__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 79.8 KiB | 55.8 KiB |
Iran used Chinese spy satellite to target US bases div.featured-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 64.0 KiB | 46.1 KiB |
Iran is America’s Suez crisis — and just as ridiculous div.primary-opinion-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 56.0 KiB | 44.7 KiB |
Prosecutors charge organiser of New York Santa bacchanal with fraud div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 33.9 KiB | 26.2 KiB |
The Wonderful World That Almost Was — a full-bodied artistic romance div.featured-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 36.6 KiB | 26.1 KiB |
Australia’s richest person ordered to pay rival mining families royalties div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 33.2 KiB | 23.7 KiB |
Unhedged Podcast div.grid-item > a.link > picture > img.image | /v3/image/raw/https://next-video-editor-images.s3.ap-nort... | 23.7 KiB | 22.1 KiB |
Newswrap Newsletter div.promo__links-image > a.link > picture > img.image | /v3/image/raw/https://www.ft.com/__assets/creatives/homep... | 20.3 KiB | 19.6 KiB |
Margo’s Got Money Troubles — Elle Fanning stars in coy OnlyFans comedy packed w… div.featured-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 26.8 KiB | 19.1 KiB |
Saudi Arabia’s PIF on verge of cutting support for LIV Golf div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 23.6 KiB | 17.2 KiB |
Should Europe welcome Chinese investment? div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 21.6 KiB | 15.8 KiB |
Ad agencies settle US probe over alleged boycott of online platforms div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 21.4 KiB | 15.3 KiB |
Silver market seen as ripe for another price squeeze div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 20.8 KiB | 15.2 KiB |
China told Maersk and MSC to drop Panama port operations div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 20.2 KiB | 14.8 KiB |
Ceasefire between Israel and Hizbollah expected ‘soon’, say Lebanese officials div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 19.9 KiB | 14.5 KiB |
S&P 500 hits record high as markets surge back from Iran shock div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 19.8 KiB | 14.5 KiB |
Goldman traders wrongfooted as Iran war upended interest rate expectations div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 18.6 KiB | 13.6 KiB |
Trump warns he could rip up trade deal with UK div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 18.3 KiB | 13.4 KiB |
European airports warn new border system causes up to three-hour delays div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 17.7 KiB | 12.9 KiB |
Allbirds is turning into an AI compute provider, because of course it is div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 14.3 KiB | 12.8 KiB |
US jury finds Live Nation monopolised concert ticketing markets div.primary-story__image > a.link > picture > img.image | /v3/image/raw/https://d1e00ek4ebabms.cloudfront.net/produ... | 17.3 KiB | 12.6 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: 202 ms
| URL | Time Spent |
|---|---|
| ft.com/ | 202 ms |
| www.ft.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
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: 40 ms 32.9 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.ft.com/__assets/hashed/page-kit/styles.9b047f37ee5e.css | 26.7 KiB | 22.1 KiB |
| www.ft.com/__assets/hashed/page-kit/page-kit-layout-styles.74508e04204a.css | 12.6 KiB | 10.8 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: 40 ms 362.6 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| /pagead/managed/js/gpt/m202604100101/pubads_impl.js | 186.4 KiB | 142.8 KiB |
| www.ft.com/__assets/hashed/page-kit/301.ca2546bf8793.bundle.js | 97.5 KiB | 69.3 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-NWQJW68 | 162.6 KiB | 67.6 KiB |
| consent-manager.ft.com/Notice.8f529.js | 90.8 KiB | 61.4 KiB |
| consent-manager.ft.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js | 42.0 KiB | 21.5 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 | |
|---|---|
Saudi wealth fund resets priorities after decade of heavy spending div.spotlight-story-main__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Margo’s Got Money Troubles — Elle Fanning stars in coy OnlyFans comedy packed w… div.featured-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
The Wonderful World That Almost Was — a full-bodied artistic romance div.featured-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Ad agencies settle US probe over alleged boycott of online platforms div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Australia’s richest person ordered to pay rival mining families royalties div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Iran used Chinese spy satellite to target US bases div.featured-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Iran is America’s Suez crisis — and just as ridiculous div.primary-opinion-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Heart Wall — a diffuse drama of family secrets div.featured-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Leïla Slimani: ‘This novel was very, very, very difficult to write’ div.featured-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Betting on risk changes the world div.featured-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Face Swaps & Deepfakes div.preview__image--container > div.preview__image--wrapper > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
div.preview__image--container > div.preview__image--wrapper > picture > img.image div.preview__image--container > div.preview__image--wrapper > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
div.preview__image--container > div.preview__image--wrapper > picture > img.image div.preview__image--container > div.preview__image--wrapper > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
Can India quit coal? div.preview__image--container > div.preview__image--wrapper > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
Ceasefire between Israel and Hizbollah expected ‘soon’, say Lebanese officials div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
China told Maersk and MSC to drop Panama port operations div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
London Falling — a masterful story of money, tragedy and the city’s dark side div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Goldman traders wrongfooted as Iran war upended interest rate expectations div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
S&P 500 hits record high as markets surge back from Iran shock div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
US jury finds Live Nation monopolised concert ticketing markets div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Prosecutors charge organiser of New York Santa bacchanal with fraud div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Norway’s $2tn sovereign wealth fund has ‘no plans’ to reduce US assets div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Trump warns he could rip up trade deal with UK div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Israeli start-up makes world’s first lab-grown chocolate bar div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Should Europe welcome Chinese investment? div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Saudi Arabia’s PIF on verge of cutting support for LIV Golf div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
European airports warn new border system causes up to three-hour delays div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Uber commits $10bn to robotaxis in strategy shift div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Silver market seen as ripe for another price squeeze div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
The weird resilience of the EU div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Allbirds is turning into an AI compute provider, because of course it is div.primary-story__image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://d1e00ek4eb... |
Newswrap Newsletter div.promo__links-image > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://www.ft.com... |
FT News Briefing podcast div.grid-item > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
Unhedged Podcast div.grid-item > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
Political Fix podcast div.grid-item > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
Swamp Notes podcast div.grid-item > a.link > picture > img.image | /__origami/service/image/v2/images/raw/https://next-video... |
Banks’ soaring exposure to trading firms creating ‘inherent fragility’, warns S… div.primary-story__image > a.link > picture > img.image | |
Big Tech’s $300mn election war chest rattles Democrats div.primary-story__image > a.link > picture > img.image |
More information about the performance of your application. These numbers don't directly affect the Performance score.
●Max Potential First Input Delay 110 ms
●Layout shift culprits
●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 2,536 KiB
●JavaScript execution time 0.7 s
●Minimizes main-thread work 1.5 s
●Avoid long main-thread tasks 6 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 240 ms
●Server Backend Latencies 490 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 300 ms
●Avoid large layout shifts 3 layout shifts found
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
95
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
Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Close banner div.o-banner > div.o-banner__outer > div.o-banner__inner > button.o-banner__close |
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.
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 |
|---|
FT Editorial Code of Practice div.o-footer__container > div.o-footer__copyright > small > a |
○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 are valid and not misspelled
●Buttons have an accessible name
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<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.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Image elements have `[alt]` attributes
○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.
○`[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.
○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
●Document has a valid `hreflang`
○Image elements have `[alt]` attributes
○Document has a valid `rel=canonical`