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· 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.

51

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.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:66.87 source:map[column:23172 line:7 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:247.193 source:map[type:text value:[unattributed]]] map[reflowTime:0.532 source:map[column:1195 line:0 type:source-location url:https://store.taylorswift.com/cdn/shop/t/514/assets/product-drawer.js?v=31118981019059389991773859645 urlProvider:network]] map[reflowTime:0.201 source:map[column:1195 line:0 type:source-location url:https://store.taylorswift.com/cdn/shop/t/514/assets/product-drawer.js?v=31118981019059389991773859645 urlProvider:network]] map[reflowTime:0.113 source:map[column:1195 line:0 type:source-location url:https://store.taylorswift.com/cdn/shop/t/514/assets/product-drawer.js?v=31118981019059389991773859645 urlProvider:network]] map[reflowTime:8.756 source:map[column:168 line:0 type:source-location url:https://store.taylorswift.com/cdn/shop/t/514/assets/sticky-top-adjuster.js?v=129808337159051006361773859645 urlProvider:network]] map[reflowTime:2.615 source:map[column:101 line:0 type:source-location url:https://store.taylorswift.com/cdn/shop/t/514/assets/popup.js?v=147867555442045362201773859645 urlProvider:network]] map[reflowTime:66.17 source:map[column:297871 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.7 source:map[column:298215 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.813 source:map[column:189824 line:3 type:source-location url:https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js urlProvider:network]] map[reflowTime:40.512 source:map[column:47829 line:0 type:source-location url:https://store.taylorswift.com/cdn/shop/t/514/assets/libs.js?v=138641497524871954441773859645 urlProvider:network]]]

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
div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img
/cdn/shop/files/uPHLL51qMlI6BBopeY6x0XoDxvOCWWIh.png?v=17...1.9 MiB1.8 MiB
div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img
/cdn/shop/files/r40zgx5pJBfxkoUj3vrEm1L59IsgHgTL.png?v=17...1.8 MiB1.7 MiB
div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img
/cdn/shop/files/rg7mO2embY87JeBC4SDwN3X0StVziQL4.png?v=17...1.4 MiB1.1 MiB
THE LIFE OF A SHOWGIRL SHOP BY ALBUM SHOP BY ALBUM THE LIFE OF A SHOWGIRL SHOP … body.template-index > div#shopify-section-sections--18128602005704__header > sticky-header.header-wrapper
/s/files/1/0564/5975/5606/files/hROR7omwXrhU0m0AzAVJt8KtA...389.9 KiB314.3 KiB
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_da8qnd8238948614344-submit
cdn.shopify.com/s/files/1/0564/5975/5606/files/ONG3_E.png?v=1759797313372.2 KiB240.3 KiB
The Life of a Showgirl Violet Blue Hoodie Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/56c673f330b949bb9bad6434ef...153.2 KiB127.1 KiB
You Can Call Me Honey If You Want Pink Crewneck Sweatshirt Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/fa22954979ca46d4be9a0bdf7d...120.0 KiB99.5 KiB
The Life of a Showgirl Violet Blue Hoodie div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/dk490q2im3f0v-q3-yt4q.webp?v=1760109700&w...114.3 KiB79.7 KiB
The Life of a Showgirl Film Strip Black Crewneck Sweatshirt Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/fd3edc73c1524a16bb69100902...94.1 KiB78.0 KiB
I'm Immortal Now Baby Dolls Baby T-Shirt Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/b093ec38e16e4f3e8e5343d39d...78.7 KiB65.3 KiB
The Life of a Showgirl Shiny Bug T-Shirt Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/82ac361b701b4ca08c8743366e...78.1 KiB64.8 KiB
The Life of a Showgirl It's Rapturous T-Shirt Front on Model div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/N_CWURTHUHN_CEGQUN0S4_UDT3YT.png?v=176011...81.5 KiB56.8 KiB
Thank You For The Lovely Bouquet Cropped T-Shirt Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/6494a0fadb9e4c37a977976564...67.3 KiB55.8 KiB
The Life of a Showgirl It's Rapturous T-Shirt div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/NDJGNCHQU3-I4_DTU8CQ3-T4TDX.webp?v=176011...77.0 KiB53.7 KiB
The Life of a Showgirl Shorts div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/HNUTF4WU6_9DU384-YV8W45D613CV2YQ7.webp?v=...68.3 KiB47.6 KiB
The Life of a Showgirl Film Strip Black Crewneck Sweatshirt div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/yt76rvy8pvy6rc568e.webp?v=1760109719&widt...55.1 KiB38.4 KiB
Got A Wi$hli$t Bomber Jacket Video div.card > div.card__inner > div.media-container > video.motion-reduce
/cdn/shop/files/preview_images/7288c4ab7d4d40989fcc819c85...39.6 KiB32.8 KiB
The Life of a Showgirl Mint T-Shirt div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/Tfsdguw4hdtnmqwcivet_u9u45w.webp?v=176011...46.7 KiB32.5 KiB
Got A Wi$hli$t Bomber Jacket div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/jrmvwi4gnu560dqm-f4gnwecsao_xcg.webp?v=17...45.4 KiB31.7 KiB
I'm Immortal Now Baby Dolls Baby T-Shirt div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/evqy4q3sr3xwcsdvhbe7ib3.webp?v=1760118293...39.3 KiB27.4 KiB
The Life of a Showgirl Shiny Bug White Sweatpants div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/HRCNUQ3-Y8DQX-3_CTV3.webp?v=1760117857&wi...38.2 KiB26.6 KiB
The Life of a Showgirl Shiny Bug White Sweatpants Side on Model div#swiper-wrapper-bbbfe59991522e87 > div.swiper-slide > div.media > img.swiper-lazy
/cdn/shop/files/uzVL9Q2eikUcTvdCMO76DNGK6fNEv3L1.png?v=17...26.5 KiB26.5 KiB
The Life of a Showgirl Shiny Bug T-Shirt div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/hnucenr_ck_qijtvcq_xitq.webp?v=1760118252...33.4 KiB23.3 KiB
Thank You For The Lovely Bouquet Cropped T-Shirt div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/e0di1304m5fi1c0di353q4.webp?v=1760109837&...31.2 KiB21.7 KiB
The Life of a Showgirl Shiny Bug Hat div#swiper-wrapper-2de4a989da0871e6 > div.swiper-slide > div.media > img.swiper-lazy
/cdn/shop/files/jmcq49-dx9acev-r_gi-cwtq.webp?v=176010986...19.1 KiB19.1 KiB
The Life of a Showgirl Shiny Bug Hat div.card > div.card__inner > div.media-container > img.motion-reduce
/cdn/shop/files/Tfg_esv5ywyfq3ybu7i43dwg.webp?v=176011837...26.4 KiB18.4 KiB
Taylor Swift Logo header.header > h1.header__heading > a.header__heading-link > img.header__heading-logo
/cdn/shop/files/xDSNarkBjzvNFcXVCiFIjekuON93TaIO_ad83bd15...7.6 KiB6.7 KiB

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-2-IMG
nodeLabel: div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img
path: 1,HTML,1,BODY,18,MAIN,0,SECTION,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,1,IMG
selector: div.banner-grid__card > div.banner-grid__media > picture.featured-products__item-image > img
snippet: <img src="//store.taylorswift.com/cdn/shop/files/rg7mO2embY87JeBC4SDwN3X0StVziQL4.pn…" loading="eager" alt="" width="2440" height="1952.0" style="--focal_point_desktop: 50.0% 50.0%; --focal_point_mobile: 50.0% 50.0%; " sizes="">

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

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.

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.

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
Unattributable3.2 s172 ms0.0 ms
store.taylorswift.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js1.8 s231 ms6.4 ms
store.taylorswift.com/1.3 s69 ms10 ms
script.hotjar.com/modules.6a0f3932cb1341a35c18.js940 ms814 ms52 ms
www.googletagmanager.com/gtm.js?id=GTM-TBDJX57V465 ms427 ms29 ms
cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js406 ms265 ms19 ms
www.googletagmanager.com/gtag/js?id=G-G45E6KQ5Z2&cx=c&gtm=4e6461300 ms201 ms99 ms
www.googletagmanager.com/gtag/destination?id=AW-747581186&cx=c&gtm=4e6461272 ms217 ms55 ms
www.googletagmanager.com/gtag/destination?id=AW-854631222&cx=c&gtm=4e6461266 ms218 ms44 ms
www.googletagmanager.com/gtag/js?id=GT-PJN84ZH263 ms199 ms25 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js254 ms200 ms52 ms
d2wy8f7a9ursnm.cloudfront.net/v5/bugsnag.min.js201 ms160 ms10 ms
www.google-analytics.com/analytics.js188 ms85 ms17 ms
sc-static.net/scevent.min.js170 ms143 ms19 ms
s.pinimg.com/ct/lib/main.34af66ec.js163 ms138 ms24 ms
/cdn/shopifycloud/storefront/assets/shop_events_listener-...138 ms84 ms0.5 ms
/cdn/s/trekkie.storefront.e683ac02f599017ff9915d0144977db...125 ms57 ms5.0 ms
cdn.jsdelivr.net/npm/alpinejs@3.14.1/dist/cdn.min.js124 ms105 ms6.7 ms
/cdn/shop/t/514/assets/product-card-slider.js?v=172047072...108 ms99 ms0.2 ms
static.ads-twitter.com/uwt.js94 ms90 ms3.9 ms
/cdn/shopifycloud/shop-js/modules/v2/chunk.index_4uAqGWkW...84 ms44 ms0.2 ms
www.googletagmanager.com/gtag/js?id=GT-PJN84ZH&cx=c&gtm=4e646177 ms14 ms63 ms
/cdn/shop/t/514/assets/libs.js?v=138641497524871954441773...71 ms11 ms9.0 ms
store.taylorswift.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js67 ms63 ms2.2 ms
/onsite/js/vendors~in_app_forms~signup_forms~client_ident...61 ms60 ms0.4 ms
/cdn/shopifycloud/storefront/assets/shopify_pay/storefron...59 ms45 ms14 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js57 ms23 ms31 ms
/config/com/9ec76f43-c66f-4fa9-b625-11123b4a7846.js?v=3.5...54 ms54 ms0.1 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
Other5.4 s
Script Evaluation4.8 s
Script Parsing & Compilation641 ms
Style & Layout639 ms
Parse HTML & CSS207 ms
Garbage Collection199 ms
Rendering142 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 WebSocket cannot enter back/forward cache.Pending browser support

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 20.1 KiB
URLTransfer SizeEst Savings
23.1 KiB20.1 KiB

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
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 36 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 250 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 10 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
99

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.

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
THE LIFE OF A SHOWGIRL VIOLET BLUE HOODIE div.card-information > div.card-information__wrapper > div.card__group > h3.card__title

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
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_ezCnfn8234405724360-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_ezCnfn8238947926216-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_ezCnfn8238947467464-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_ezCnfn8238950285512-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_ezCnfn8238944911560-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_ezCnfn8238946222280-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_da8qnd8238950547656-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_da8qnd8238946943176-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_da8qnd8238949040328-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_da8qnd8238948614344-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_rff3Tf8238948221128-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_rff3Tf8238944485576-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_rff3Tf8238945403080-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_rff3Tf8238946451656-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_KVFb3N8239062450376-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_KVFb3N8239062089928-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_KVFb3N8239062286536-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_KVFb3N8240068526280-submit
QUICK SHOP div.card > div.quick-add > modal-opener-quick-view.flex > button#quick-add-template--18128601383112__popular_products_KVFb3N8239093153992-submit
○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
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[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
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●Select elements have associated label elements.
●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
●`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
●Definition list items are wrapped in `<dl>` elements
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●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
○`[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
○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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○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.
○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
●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 DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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