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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

32

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.

RequestCache TTLTransfer Size
connect.facebook.net/en_US/fbevents.js1200.0 s95.0 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s95.0 KiB
cdn.dynamicyield.com/api/8773860/api_static.js28800.0 s111.8 KiB
/master.returngo.ai/returngo.min.js?shop=decathlon-usa.my...600.0 s50.0 KiB
/1773844786-app.decathlon-usa.myshopify.com.js?shop=decat...3600.0 s49.2 KiB
/signals/config/570343323462442?v=2.9.293&r=stable&domain...1200.0 s38.9 KiB
/signals/config/570343323462442?v=2.9.293&r=stable&domain...1200.0 s38.9 KiB
na.shgcdn3.com/pixel-collector.js?shop=decathlon-usa.myshopify.com0.0 ms26.6 KiB
cdn.9gtb.com/script.js?rev=9b8201f86400.0 s60.5 KiB
www.redditstatic.com/ads/pixel.js60.0 s19.0 KiB
cdn.aggle.net/oir/oir.min.js0.0 ms18.7 KiB
cdn.dynamicyield.com/api/8773860/api_dynamic.js300.0 s18.4 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
static.klaviyo.com/onsite/js/klaviyo.js?company_id=TEJqNp1.0 s2.7 KiB
/onsite/js/klaviyo.js?company_id=TEJqNp&shop=decathlon-us...1.0 s2.7 KiB
static.klaviyo.com/onsite/js/TEJqNp/klaviyo.js?company_id=TEJqNp1.0 s2.4 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...300.0 s2.4 KiB
cdn.gethypervisual.com/assets/hypervisual.js?shop=decathlon-usa.myshopify.com600.0 s2.4 KiB
/onsite/js/klaviyo.js?company_id=Uz9CmY&shop=decathlon-us...1.0 s2.1 KiB
content.9gtb.com/loader.js86400.0 s1.9 KiB
/loader.js?g_cvt_id=a110def0-d58e-4319-a849-6fd60afa15fe&...86400.0 s1.8 KiB
/rp.gif?ts=1775636117145&id=a2_efelxn60dde5&event=PageVis...0.0 ms637 B
shop.app/checkouts/internal/preloads.js?locale=en-US&shop_id=1330628760.0 s546 B
/tr/?id=570343323462442&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:199.15 source:map[column:73398 line:2 type:source-location url:https://scripts.clarity.ms/0.8.59/clarity.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:439.489 source:map[type:text value:[unattributed]]] map[reflowTime:53.11 source:map[column:121162 line:0 type:source-location url:https://www.decathlon.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js urlProvider:network]] map[reflowTime:60.883 source:map[column:13 line:24832 type:source-location url:https://www.decathlon.com/ urlProvider:network]] map[reflowTime:7.481 source:map[column:18918 line:0 type:source-location url:https://www.decathlon.com/cdn/shop/t/334/assets/global.js?v=7301445359237545521750076865 urlProvider:network]] map[reflowTime:5.396 source:map[column:20289 line:0 type:source-location url:https://www.decathlon.com/cdn/shop/t/334/assets/global.js?v=7301445359237545521750076865 urlProvider:network]] map[reflowTime:4.981 source:map[column:35004 line:0 type:source-location url:https://www.decathlon.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js urlProvider:network]] map[reflowTime:0.588 source:map[column:19372 line:0 type:source-location url: urlProvider:network]] map[reflowTime:67.958 source:map[column:2622 line:0 type:source-location url:https://static.klaviyo.com/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc073a286a0296d9f7/default~in_app_forms~signup_forms.a9953a1681e0d8106e3e.js?cb=2 urlProvider:network]] map[reflowTime:199.15 source:map[column:31518 line:1 type:source-location url:https://scripts.clarity.ms/0.8.59/clarity.js urlProvider:network]]]

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.

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.

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
Person practicing martial arts outdoors section.dkt-img-txt__container > div.dkt-img-txt__grid > div.dkt-img-txt__image2 > img.dkt-img-txt__photo
/s/files/1/1752/4727/files/aed8431ee8fdbf4506d5b02b5d64a5...1.1 MiB1.1 MiB
Two hikers with a dog on a forest trail section.dkt-img-txt__container > div.dkt-img-txt__grid > div.dkt-img-txt__image1 > img.dkt-img-txt__photo
/s/files/1/1752/4727/files/85a230de3b02930762d96f52e27304...1.0 MiB1.0 MiB
Trending Now div.dkt-stepper-carousel__products-carousel > div.dkt-stepper-carousel__card-wrapper > div.testing-div > img.testing-img
/cdn/shop/files/8852483-context_image-p2589780.jpg?v=1749...179.7 KiB139.5 KiB
Most Popular div.dkt-stepper-carousel__products-carousel > div.dkt-stepper-carousel__card-wrapper > div.testing-div > img.testing-img
/cdn/shop/files/8595408-context_image-p2738017.jpg?v=1757...193.5 KiB66.6 KiB
Adventure Ready div.dkt-stepper-carousel__products-carousel > div.dkt-stepper-carousel__card-wrapper > div.testing-div > img.testing-img
/cdn/shop/files/8505871-context_image-p1832966.jpg?v=1723...86.8 KiB46.5 KiB
Staff Pick div.dkt-stepper-carousel__products-carousel > div.dkt-stepper-carousel__card-wrapper > div.testing-div > img.testing-img
/cdn/shop/files/8736386-context_image-p2355234.jpg?v=1753...106.8 KiB36.2 KiB
Cycling div.dkt-categories__grid > a#category-image-url_7n8B9L > div.dkt-categories__icon > img
www.decathlon.com/cdn/shop/files/Cycling-Icon.png?v=175023443937.2 KiB36.1 KiB
Most Popular div.dkt-stepper-carousel__products-carousel > div.dkt-stepper-carousel__card-wrapper > div.testing-div > img.testing-img
/cdn/shop/files/8787845-context_image-p2481988.jpg?v=1756...103.2 KiB35.0 KiB
Camping div.dkt-categories__grid > a#category-image-url_Y3NqbD > div.dkt-categories__icon > img
www.decathlon.com/cdn/shop/files/tent.png?v=175023312522.7 KiB22.0 KiB
Running div.dkt-categories__grid > a#category-image-url_Rqf4YT > div.dkt-categories__icon > img
www.decathlon.com/cdn/shop/files/backpack.png?v=175023316920.0 KiB19.4 KiB
Hiking & Backpacking div.dkt-categories__grid > a#category-image-url_HnTFYn > div.dkt-categories__icon > img
/cdn/shop/files/FORCLAZ_SAD_H_MT_100_EASYFIT_70L_OCRE_-_8...11.0 KiB10.2 KiB
Snow & Ski div.dkt-categories__grid > a#category-image-url_LJeHTE > div.dkt-categories__icon > img
/cdn/shop/files/WEDZE_MOUFLES_SKI_100_NOIR_AH25_-_8562903...7.6 KiB6.9 KiB

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

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

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: 936 ms
URLTime Spent
decathlon.com/936 ms
www.decathlon.com/0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.decathlon.com/4.7 s402 ms56 ms
Unattributable2.6 s212 ms0.0 ms
cdn.dynamicyield.com/api/8773860/api_static.js1.5 s506 ms54 ms
cdn.rebuyengine.com/onsite/js/rebuy.js?shop=decathlon-usa.myshopify.com1.3 s720 ms604 ms
cdn.rebuyengine.com/onsite/js/global.js?build=17755949821.0 s839 ms97 ms
scripts.clarity.ms/0.8.59/clarity.js873 ms781 ms11 ms
www.decathlon.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js829 ms487 ms44 ms
www.googletagmanager.com/gtag/js?id=G-NQJCP882N4581 ms498 ms75 ms
cdn.rebuyengine.com/onsite/js/vendor-jquery.js?id=f643b7c5754fea9c562c448 ms67 ms12 ms
assets.gorgias.chat/build/static/js/279.6ba6eb825556cdb4.js406 ms364 ms38 ms
/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc0...383 ms100 ms9.0 ms
/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc0...334 ms254 ms4.3 ms
/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc0...323 ms270 ms3.6 ms
/st?sec=8773860&ref=&scriptVersion=2.83.0&inHead=true&id=...313 ms283 ms6.5 ms
cdn.rebuyengine.com/onsite/js/SmartBanner.js?id=dd11f8d42c5e0a8cb99b312 ms102 ms0.5 ms
www.googletagmanager.com/gtag/js?id=GT-MJWCF3J297 ms244 ms51 ms
assets.gorgias.chat/build/static/js/557.6de1f9ffeac828e3.js294 ms209 ms15 ms
/cdn/s/trekkie.storefront.e683ac02f599017ff9915d0144977db...245 ms160 ms16 ms
www.decathlon.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js234 ms181 ms27 ms
/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc0...234 ms2.7 ms2.8 ms
connect.facebook.net/en_US/fbevents.js185 ms138 ms47 ms
/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc0...177 ms149 ms27 ms
cdn.rebuyengine.com/onsite/js/vendors.js?id=ba81eedcc75447950e14173 ms124 ms35 ms
/1773844786-app.decathlon-usa.myshopify.com.js?shop=decat...173 ms64 ms30 ms
/cdn/shopifycloud/storefront/assets/shop_events_listener-...147 ms130 ms2.2 ms
/signals/config/570343323462442?v=2.9.293&r=stable&domain...145 ms122 ms22 ms
cdn.nfcube.com/instafeed-8cf98a5a67967db58e071fdb98e726b4.js132 ms91 ms8.8 ms
/cdn/shopifycloud/shop-js/modules/v2/chunk.index_4uAqGWkW...129 ms99 ms0.7 ms
cdn.9gtb.com/script.js?rev=9b8201f126 ms95 ms31 ms
/extensions/019d4ca2-a46b-72d1-ac1c-31ca06f3de4e/dynamic-...100 ms97 ms3.0 ms
cdn.dynamicyield.com/api/8773860/api_dynamic.js100 ms70 ms29 ms
cdn.aggle.net/oir/oir.min.js94 ms83 ms8.4 ms
/cdn/shopifycloud/storefront/assets/storefront/load_featu...91 ms88 ms2.4 ms
na.shgcdn3.com/pixel-collector.js?shop=decathlon-usa.myshopify.com89 ms75 ms12 ms
/instafeed-8cf98a5a67967db58e071fdb98e726b4.js?shop=decat...86 ms52 ms7.7 ms
www.googletagmanager.com/gtag/js?id=GT-MJWCF3J&cx=c&gtm=4e6470h285 ms36 ms49 ms
www.decathlon.com/cdn/shop/t/334/assets/global.js?v=730144535923754552175007686585 ms24 ms8.5 ms
/public/js/main.js?shop=decathlon-usa.myshopify.com&17322...84 ms32 ms28 ms
/cdn/shopifycloud/storefront/assets/shopify_pay/storefron...79 ms62 ms12 ms
cdn.rebuyengine.com/onsite/js/vendor-splidejs.js?id=cd4950802eaac35ce58a77 ms41 ms4.7 ms
/extensions/019d6537-7205-772e-a810-2a4a5bebcde8/restockr...76 ms50 ms25 ms
/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc0...68 ms58 ms9.0 ms
/0/js/scripttags/decathlon-usa/country_redirect_e7551f25b...59 ms38 ms18 ms
static.klaviyo.com/onsite/js/klaviyo.js?company_id=TEJqNp56 ms45 ms2.3 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 Evaluation10.2 s
Style & Layout4.6 s
Other3.9 s
Script Parsing & Compilation1.8 s
Rendering659 ms
Parse HTML & CSS511 ms
Garbage Collection316 ms

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 3.6 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 18.7 KiB
URLTransfer SizeEst Savings
/public/js/main.js?shop=decathlon-usa.myshopify.com&17322...36.9 KiB18.7 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 16.6 KiB
URLTransfer SizeEst Savings
cdn.rebuyengine.com/onsite/css/global.min.css?build=177559498218.1 KiB16.6 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
Two hikers with a dog on a forest trail section.dkt-img-txt__container > div.dkt-img-txt__grid > div.dkt-img-txt__image1 > img.dkt-img-txt__photo
/s/files/1/1752/4727/files/85a230de3b02930762d96f52e27304...
Person practicing martial arts outdoors section.dkt-img-txt__container > div.dkt-img-txt__grid > div.dkt-img-txt__image2 > img.dkt-img-txt__photo
/s/files/1/1752/4727/files/aed8431ee8fdbf4506d5b02b5d64a5...
{*unspecified-8735937*} Black backpack with 'FORCLAZ' brand logo on a white bac… div#splide01-slide01 > div.rebuy-product-media > a.rebuy-product-image > img
/s/files/1/1330/6287/files/8735937-product_image-p2479884...
{*asphalt-blue-8731516*} div#splide01-slide02 > div.rebuy-product-media > a.rebuy-product-image > img
/s/files/1/1330/6287/files/8731516-product_image-p2583621...
{*asphalt-blue-8858286*} div#splide01-slide03 > div.rebuy-product-media > a.rebuy-product-image > img
/s/files/1/1330/6287/files/8858286-product_image-p2688048...

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

Layout shift culprits
Optimize DOM size
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
User Timing marks and measures 57 user timings
Avoid long main-thread tasks 20 long tasks found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 190 ms
Server Backend Latencies 600 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 10 ms
INP breakdown
Avoid non-composited animations
Avoid large layout shifts
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.

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
High-Performance Products For Everyone section.dkt-img-txt__container > div.dkt-img-txt__grid > div.dkt-img-txt__title > h1.dkt-img-txt__heading
At Decathlon, we believe in making sports accessible to everyone, everywhere. W… section.dkt-img-txt__container > div.dkt-img-txt__grid > div.dkt-img-txt__text-content > p.dkt-img-txt__paragraph
4.8 div.card__title-rating-wrapper > div.rating > p.rating-text > span
$11.99 div.price > div.price__container > div.price__regular > span.price-item
$140.00 div.price > div.price__container > div.price__regular > span.price-item
$140.00 div.price > div.price__container > div.price__regular > span.price-item
17 slider-component.slider-mobile-gutter > div.slider-buttons > div.slider-counter > span.slider-counter--total
Follow Us @DecathlonUSA div.page-width > div#shopify-block-AZEtxU2xkNFpCL2tha__instafeed_app_block_GFLUUH > div#insta-feed > h2
Terms of Service div.dkt-footer__container > div.dkt-footer__bottom-bar > div.dkt-footer__legal-links > a
Shipping Policy div.dkt-footer__container > div.dkt-footer__bottom-bar > div.dkt-footer__legal-links > a
Supply Chain Disclosure div.dkt-footer__container > div.dkt-footer__bottom-bar > div.dkt-footer__legal-links > a
Privacy Policy div.dkt-footer__container > div.dkt-footer__bottom-bar > div.dkt-footer__legal-links > a
Decathlon Accessibility Statement div.dkt-footer__container > div.dkt-footer__bottom-bar > div.dkt-footer__legal-links > a
Product Recalls div.dkt-footer__container > div.dkt-footer__bottom-bar > div.dkt-footer__legal-links > a
Select Your Country div.spicegems_cr_modal-dialog > div.spicegems_cr_modal-content > div.spicegems_cr_modal-footer > a#spicegems_cr_btn_yes
Stay on U.S. Site div.spicegems_cr_modal-dialog > div.spicegems_cr_modal-content > div.spicegems_cr_modal-footer > a#spicegems_cr_btn_no

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
Kiprun Ultra-Light 5-Panel Running Cap div.card__content > div.card__information > div.card-information > h3#title-template--16865945452606__dkt_stepper_carousel_XhgFrD-7774402576446

These are opportunities to improve keyboard navigation in your application.

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.
`button`, `link`, and `menuitem` elements have accessible names
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
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
Image elements do not have `[alt]` attributes that are redundant text.
Elements with visible text labels have matching accessible names.
`[accesskey]` values are unique
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
`<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
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
Identical links have the same purpose.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
81

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting
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
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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.

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Format your HTML in a way that enables crawlers to better understand your app’s content.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Select Your Country div.spicegems_cr_modal-dialog > div.spicegems_cr_modal-content > div.spicegems_cr_modal-footer > a#spicegems_cr_btn_yes
Stay on U.S. Site div.spicegems_cr_modal-dialog > div.spicegems_cr_modal-content > div.spicegems_cr_modal-footer > a#spicegems_cr_btn_no

To appear in search results, crawlers need access to your app.

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

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