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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.

26

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
www.boots.com/deot-thath-I-my-bothinke-you-weywarley-violent-C23.0 s240.3 KiB
/js/gigya.js?apikey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIY...900.0 s238.8 KiB
www.boots.com/wcsstore/dojo18/dojo/dojodesktop-rwd.js7200.0 s106.3 KiB
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/boots/common.min.css7200.0 s89.8 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...7200.0 s84.1 KiB
www.boots.com/headerfooter/assets/134-bundle-e5359f09.js1200.0 s68.6 KiB
www.boots.com/wcsstore/dojo18/dojo/dojo.js7200.0 s78.8 KiB
www.boots.com/headerfooter/assets/971-bundle-8193126a.js1200.0 s56.3 KiB
/wcsstore/ExtendedSitesCatalogAssetStore/supernav/advanta...7200.0 s64.7 KiB
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/fonts/ElegantIcons.woff7200.0 s62.1 KiB
/wcsstore/ExtendedSitesCatalogAssetStore/supernav/Health/...7200.0 s45.9 KiB
cdn.synthetix.com/FAQTAGENT-BOOTS-2021/fonts/BootsSharp-Light.woff0.0 ms33.4 KiB
cdn.cookielaw.org/scripttemplates/6.14.0/otBannerSdk.js86400.0 s81.8 KiB
cdn.synthetix.com/FAQTAGENT-BOOTS-2021/fonts/BootsSharp-Bold.woff0.0 ms31.6 KiB
/wcsstore/ExtendedSitesCatalogAssetStore/supernav/brand/N...7200.0 s42.1 KiB
www.boots.com/headerfooter/assets/843-bundle-48b4727f.js1200.0 s33.6 KiB
www.boots.com/headerfooter/assets/354-bundle-a5f17b0f.js1200.0 s31.8 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/Common/Co...7200.0 s35.3 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/jquery-1....7200.0 s32.7 KiB
/wcsstore/eBootsStorefrontAssetStore/css/fonts/ginger/F37...7200.0 s32.0 KiB
/wcsstore/eBootsStorefrontAssetStore/css/fonts/ginger/F37...7200.0 s31.7 KiB
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/at.js7200.0 s31.1 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/Widgets/a...7200.0 s30.8 KiB
www.boots.com/headerfooter/assets/697-bundle-d98a3073.js1200.0 s25.9 KiB
www.boots.com/headerfooter/assets/543-bundle-0a167a51.js1200.0 s24.5 KiB
www.boots.com/headerfooter/assets/267-bundle-b1888f99.js1200.0 s20.1 KiB
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/visitor.js7200.0 s22.6 KiB
/is/image/Boots/9a_No7_ProjectPanda_ToggleTicker_Right_Im...694.0 s16.0 KiB
cdn.synthetix.com/penfield/prod/1.4.0b/js/core.min.js0.0 ms14.1 KiB
/is/image/Boots/8b_No7_ProjectPanda_CountdownTicker_Mobil...3571.0 s14.9 KiB
/is/image/Boots/9a_No7_ProjectPanda_ToggleTicker_Left_Ima...2909.0 s14.3 KiB
www.boots.com/headerfooter/assets/124-bundle-49c8b1d3.js1200.0 s13.0 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...7200.0 s14.3 KiB
www.boots.com/headerfooter/assets/931-bundle-be90393d.js1200.0 s11.9 KiB
www.boots.com/headerfooter/assets/736-bundle-a3c1eff8.js1200.0 s11.4 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...7200.0 s12.7 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/UserArea/...7200.0 s12.1 KiB
www.boots.com/headerfooter/assets/355-bundle-ba5a03e9.js1200.0 s9.2 KiB
/penfield/get_synthetix.min.js?applicationkey=539d44bfddf...0.0 ms7.1 KiB
www.boots.com/wcsstore/ExtendedSitesCatalogAssetStore/supernav/Pharmacy/nhs.jpg7200.0 s9.2 KiB
www.boots.com/headerfooter/assets/134-bundle-e5359f09.css1200.0 s7.4 KiB
/wcsstore/eBootsStorefrontAssetStore/MasterLogo2019/BVI L...7200.0 s8.6 KiB
/wcsstore/eBootsStorefrontAssetStore/images/boots/estore_...7200.0 s8.5 KiB
www.boots.com/headerfooter/assets/287-bundle-334a5c10.js1200.0 s7.1 KiB
/wcsstore/eBootsStorefrontAssetStore/MasterLogo2019/Boots...7200.0 s7.8 KiB
/wcsstore/eBootsStorefrontAssetStore/Footer_Updated_Image...7200.0 s7.2 KiB
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/boots/algolia.min.css7200.0 s6.6 KiB
cdn.synthetix.com/penfield/prod/1.4.0b/css/sx_animate.min.css0.0 ms4.4 KiB
/wcsstore/Widgets/Common/CatalogEntry/javascript/AddToBas...7200.0 s5.8 KiB
www.boots.com/headerfooter/assets/843-bundle-48b4727f.css1200.0 s4.5 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...7200.0 s4.7 KiB
www.boots.com/headerfooter/assets/570-bundle-ac780d8f.js1200.0 s3.8 KiB
/wcsstore/eBootsStorefrontAssetStore/Footer_Updated_Image...7200.0 s4.1 KiB
www.boots.com/headerfooter/assets/677-bundle-26ae7c5c.js1200.0 s3.5 KiB
cdn.synthetix.com/penfield/prod/1.4.0b/css/sx_triggers_func.min.css0.0 ms3.0 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...7200.0 s3.7 KiB
www.boots.com/headerfooter/assets/runtime-bundle-86d56151.js1200.0 s3.1 KiB
/wcsstore/eBootsStorefrontAssetStore//images/boots/boots_...7200.0 s3.3 KiB
cdn.synthetix.com/penfield/prod/1.4.0b/css/sx_frame_func.min.css0.0 ms2.4 KiB
/is/image/Boots/2022-03_no7_content-page_booking-page_log...2910.0 s2.9 KiB
www.boots.com/headerfooter/assets/main-bundle-25c40722.js1200.0 s2.2 KiB
www.boots.com/wcsstore/dojo18/wc/render/RefreshController.min.js7200.0 s2.5 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/geotarget...7200.0 s1.3 KiB
www.boots.com/headerfooter/assets/main-bundle-25c40722.css1200.0 s483 B
/wcsstore/eBootsStorefrontAssetStore/images/boots/overlay...7200.0 s359 B
www.boots.com/wcsstore/dojo18/dojo/resources/blank.gif7200.0 s248 B
www.boots.com/wcsstore/dojo18/dojo/resources/blank.gif7200.0 s0 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.

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.

URLEst Savings
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/fonts/ElegantIcons.woff170 ms
www.boots.com/online/assets/core/0.1.0/fonts/BootsSharp-Bold.woff20 ms
www.boots.com/online/assets/core/0.1.0/fonts/BootsSharp-Light.woff20 ms
www.boots.com/online/assets/core/0.1.0/fonts/BootsSharp-Regular.woff15 ms
/wcsstore/eBootsStorefrontAssetStore/css/fonts/ginger/F37...10 ms
/wcsstore/eBootsStorefrontAssetStore/css/fonts/ginger/F37...5.0 ms
cdn.synthetix.com/FAQTAGENT-BOOTS-2021/fonts/BootsSharp-Bold.woff5.0 ms
cdn.synthetix.com/FAQTAGENT-BOOTS-2021/fonts/BootsSharp-Light.woff5.0 ms

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:87.7 source:map[column:322 line:788 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-THZ5TQF&gtm=4e64k1h2 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:54.219 source:map[type:text value:[unattributed]]] map[reflowTime:87.7 source:map[column:55 line:786 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-THZ5TQF&gtm=4e64k1h2 urlProvider:network]] map[reflowTime:19.209 source:map[column:1.42995e+06 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:16.434 source:map[column:1.483111e+06 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:22.807 source:map[column:1.437631e+06 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:14.379 source:map[column:1.516303e+06 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:6.217 source:map[column:686675 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:2.551 source:map[column:1.443839e+06 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:0.139 source:map[column:423024 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:0.922 source:map[column:295521 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:38.882 source:map[column:1.471874e+06 line:0 type:source-location url:https://www.boots.com/assets/vendor-bundle-f74ea760.js urlProvider:network]] map[reflowTime:20.361 source:map[column:10311 line:0 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/generated/Header.min.js urlProvider:network]] map[reflowTime:0.687 source:map[column:118619 line:14 type:source-location url:https://www.boots.com/wcsstore/dojo18/dojo/dojo.js urlProvider:network]] map[reflowTime:14.148 source:map[column:22302 line:14 type:source-location url:https://www.boots.com/wcsstore/dojo18/dojo/dojo.js urlProvider:network]] map[reflowTime:11.641 source:map[column:21678 line:9 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/Common/CoremetricsOverrideFunctions.js urlProvider:network]] map[reflowTime:0.401 source:map[column:21775 line:9 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/Common/CoremetricsOverrideFunctions.js urlProvider:network]] map[reflowTime:0.236 source:map[column:22005 line:9 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/Common/CoremetricsOverrideFunctions.js urlProvider:network]] map[reflowTime:0.157 source:map[column:22432 line:9 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/Common/CoremetricsOverrideFunctions.js urlProvider:network]] map[reflowTime:0.313 source:map[column:22587 line:9 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/Common/CoremetricsOverrideFunctions.js urlProvider:network]] map[reflowTime:0.236 source:map[column:22732 line:9 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/Common/CoremetricsOverrideFunctions.js urlProvider:network]] map[reflowTime:9.884 source:map[column:31266 line:1 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/jquery-1.11.3.min.js urlProvider:network]] map[reflowTime:0.405 source:map[column:31383 line:4 type:source-location url:https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/jquery-1.11.3.min.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-DIV
nodeLabel: Spring into our latest offers! Discover our top deals on your favourites brand…
path: 1,HTML,1,BODY,35,DIV,38,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV
selector: div.oct-grid__row > div.oct-grid__cell > div.oct-grid > div.oct-grid__row
snippet: <div data-testid="row" class="oct-grid__row oct-grid__section oct-grid__section--full-width oct-grid__se…" style="--section-background-color: #faeccf; background-image: url(&quot;https://assets.boo…&quot;);">

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

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.

URLTransfer SizeDuration
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/at.js31.1 KiB151 ms
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/visitor.js22.6 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/Widgets/a...30.8 KiB151 ms
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/boots/common.min.css89.8 KiB453 ms
www.boots.com/online/assets/core/0.1.0/main.css413 B
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/boots/algolia.min.css6.6 KiB151 ms

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
3 fragrance gift sets on a red background div.oct-teaser-wrapper > div.oct-teaser > div.oct-teaser__foreground > img.oct-image
/content/dam/boots/shop-by-department/fragrance/2025-2026...33.3 KiB23.9 KiB
SPF products on a pink and yellow gradient background div.oct-teaser-wrapper > div.oct-teaser > div.oct-teaser__foreground > img.oct-image
/content/dam/boots/events/2025-2026/april/e834/E834_Beaut...26.8 KiB19.2 KiB
6 electrical beauty devices on a pink and yellow gradient background div.oct-teaser-wrapper > div.oct-teaser > div.oct-teaser__foreground > img.oct-image
/content/dam/boots/events/2025-2026/april/e767/E767_Event...21.2 KiB15.2 KiB
Boots Logo div#estore_header_top_row > div#logo > a > img
/wcsstore/eBootsStorefrontAssetStore/MasterLogo2019/BVI L...8.5 KiB7.4 KiB
div#estore_partnerSitesLogo > div > a > img div#estore_partnerSitesLogo > div > a > img
/wcsstore/eBootsStorefrontAssetStore/Footer_Updated_Image...7.1 KiB6.3 KiB
ul#omniPresentLinksBar > li#mobileLink_locator > a#storeLocatorQuickLink > ::before ul#omniPresentLinksBar > li#mobileLink_locator > a#storeLocatorQuickLink > ::before
/wcsstore/eBootsStorefrontAssetStore/images/boots/estore_...8.3 KiB4.6 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

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.

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: 8.0 s
URLTime Spent
boots.com/981 ms
www.boots.com/826 ms
www.boots.com/4.8 s
www.boots.com/0.0 ms
/?c=boots&e=sale2025uk&ver=v3-vcl-0.0.1&cver=1.0.0.3&t=ht...1.4 s
/?queueittoken=e_sale2025uk~q_99ce5787-7e09-4078-a938-a5c...0.0 ms
www.boots.com/0.0 ms

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: 450 ms 142.7 KiB
URLTransfer SizeEst Savings
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/boots/common.min.css89.6 KiB87.4 KiB
www.boots.com/assets/vendor-bundle-f74ea760.css44.3 KiB38.4 KiB
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …19.6 KiB16.9 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: 3.6 s 1.4 MiB
URLTransfer SizeEst Savings
www.boots.com/assets/vendor-bundle-f74ea760.js392.9 KiB201.5 KiB
/js/gigya.js?apikey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIY...238.2 KiB137.3 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...83.9 KiB77.8 KiB
www.boots.com/wcsstore/dojo18/dojo/dojodesktop-rwd.js106.1 KiB77.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2115.5 KiB76.5 KiB
www.googletagmanager.com/gtag/destination?id=DC-10359038&cx=c&gtm=4e64k1h2129.8 KiB64.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-MKCRTH2&gtm=4e64k1h2140.5 KiB64.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-M48LDLD&gtm=4e64k1h2159.2 KiB63.9 KiB
www.googletagmanager.com/gtag/destination?id=DC-8054130&cx=c&gtm=4e64k1h2131.2 KiB63.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-5T524KG&gtm=4e64k1h2143.8 KiB62.8 KiB
www.googletagmanager.com/gtag/destination?id=AW-986212917&cx=c&gtm=4e64k1h2145.8 KiB61.7 KiB
www.googletagmanager.com/gtag/js?id=G-C3KVJJE2RH&cx=c&gtm=4e64k1h2168.7 KiB58.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2115.5 KiB49.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-THZ5TQF&gtm=4e64k1h2173.5 KiB46.3 KiB
cdn.cookielaw.org/scripttemplates/6.14.0/otBannerSdk.js81.6 KiB35.1 KiB
/js/Api.htm?apiKey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIYE...55.0 KiB31.0 KiB
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/at.js31.0 KiB30.2 KiB
assets.boots.com/content/dam/fed/internal-tools/chatbot-gtm-v7.js49.1 KiB29.8 KiB
www.boots.com/wcsstore/dojo18/dojo/dojo.js78.6 KiB29.0 KiB
www.boots.com/deot-thath-I-my-bothinke-you-weywarley-violent-C240.2 KiB26.0 KiB
/wcsstore/eBootsStorefrontAssetStore/javascript/Common/Co...35.2 KiB23.1 KiB
t.promotionx.io/coordinator-6.js?cb=177689640000038.8 KiB22.9 KiB
/js/sso.htm?APIKey=3_N2POHauZ36ejoDqicSAcNnjRxrjswQ79aDK_...40.0 KiB22.2 KiB
/js/sso.htm?APIKey=3_N2POHauZ36ejoDqicSAcNnjRxrjswQ79aDK_...40.0 KiB21.9 KiB
www.boots.com/headerfooter/assets/971-bundle-8193126a.js56.1 KiB20.3 KiB

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.googletagmanager.com/gtm.js?id=GTM-THZ5TQF&gtm=4e64k1h25.4 s4.4 s119 ms
/ils-Moth-a-bluntry-owes-and-to-they-Thunds-till-/9744024...4.9 s4.4 s143 ms
www.boots.com/3.4 s932 ms94 ms
www.boots.com/assets/vendor-bundle-f74ea760.js2.4 s426 ms245 ms
www.boots.com/assets/main-bundle-2489f758.js2.4 s1.8 s7.1 ms
Unattributable2.2 s357 ms0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-MKCRTH2&gtm=4e64k1h21.8 s1.7 s72 ms
www.boots.com/deot-thath-I-my-bothinke-you-weywarley-violent-C1.2 s956 ms148 ms
www.googletagmanager.com/gtm.js?id=GTM-W26C7Q21.1 s813 ms243 ms
www.googletagmanager.com/gtm.js?id=GTM-5T524KG&gtm=4e64k1h2782 ms694 ms72 ms
/js/gigya.js?apikey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIY...722 ms609 ms91 ms
www.boots.com/wcsstore/dojo18/dojo/dojo.js708 ms477 ms38 ms
www.boots.com/headerfooter/assets/main-bundle-25c40722.js665 ms603 ms1.1 ms
www.googletagmanager.com/gtag/destination?id=AW-986212917&cx=c&gtm=4e64k1h2624 ms551 ms67 ms
w.usabilla.com/c1097dea5241.js?lv=1454 ms406 ms19 ms
cdn.cookielaw.org/scripttemplates/6.14.0/otBannerSdk.js428 ms253 ms53 ms
www.googletagmanager.com/gtag/destination?id=DC-8054130&cx=c&gtm=4e64k1h2409 ms351 ms55 ms
www.googletagmanager.com/gtm.js?id=GTM-M48LDLD&gtm=4e64k1h2399 ms309 ms87 ms
www.uqd.io/6.js393 ms363 ms18 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js377 ms358 ms6.0 ms
www.googletagmanager.com/gtag/js?id=G-C3KVJJE2RH&cx=c&gtm=4e64k1h2376 ms294 ms78 ms
www.googletagmanager.com/gtag/destination?id=DC-10359038&cx=c&gtm=4e64k1h2304 ms241 ms60 ms
/wcsstore/eBootsStorefrontAssetStore/javascript/generated...250 ms184 ms64 ms
/wcsstore/eBootsStorefrontAssetStore/javascript/jquery-1....186 ms124 ms14 ms
/js/sso.htm?APIKey=3_N2POHauZ36ejoDqicSAcNnjRxrjswQ79aDK_...176 ms168 ms0.0 ms
www.boots.com/wcsstore/dojo18/dojo/dojodesktop-rwd.js162 ms3.6 ms157 ms
/wcsstore/eBootsStorefrontAssetStore/javascript/Widgets/a...150 ms121 ms28 ms
/wcsstore/eBootsStorefrontAssetStore/javascript/Common/Co...139 ms67 ms16 ms
t.promotionx.io/coordinator-6.js?cb=1776896400000138 ms98 ms39 ms
/js/Api.htm?apiKey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIYE...136 ms69 ms38 ms
assets.boots.com/content/dam/fed/internal-tools/chatbot-gtm-v7.js123 ms92 ms23 ms
/js/sso.htm?APIKey=3_N2POHauZ36ejoDqicSAcNnjRxrjswQ79aDK_...98 ms50 ms28 ms
/js/sso.htm?APIKey=3_N2POHauZ36ejoDqicSAcNnjRxrjswQ79aDK_...97 ms49 ms29 ms
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/visitor.js82 ms70 ms12 ms
/penfield/get_synthetix.min.js?applicationkey=539d44bfddf...78 ms53 ms3.1 ms
/js/Api.htm?apiKey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIYE...60 ms47 ms0.0 ms
cdn.synthetix.com/penfield/prod/1.4.0b/js/core.min.js60 ms38 ms7.9 ms
www.boots.com/wcsstore/eBootsStorefrontAssetStore/css/boots/common.min.css53 ms0.0 ms0.0 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 Evaluation22.7 s
Other3.9 s
Script Parsing & Compilation2.4 s
Style & Layout2.3 s
Parse HTML & CSS1.1 s
Rendering870 ms
Garbage Collection551 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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 4.7 KiB
URLTransfer SizeEst Savings
/wcsstore/eBootsStorefrontAssetStore/javascript/UserArea/...11.9 KiB4.7 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.boots.com/assets/vendor-bundle-f74ea760.js393.1 KiB
/ils-Moth-a-bluntry-owes-and-to-they-Thunds-till-/9744024...246.7 KiB
www.boots.com/deot-thath-I-my-bothinke-you-weywarley-violent-C240.3 KiB
/js/gigya.js?apikey=3_tgWZjPmf4Y0eeO0Okf-Cl3OjuaTNMW5aSIY...238.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-THZ5TQF&gtm=4e64k1h2173.6 KiB
www.googletagmanager.com/gtag/js?id=G-C3KVJJE2RH&cx=c&gtm=4e64k1h2168.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-M48LDLD&gtm=4e64k1h2159.3 KiB
www.googletagmanager.com/gtag/destination?id=AW-986212917&cx=c&gtm=4e64k1h2145.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-5T524KG&gtm=4e64k1h2143.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-MKCRTH2&gtm=4e64k1h2140.5 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
div.oct-teaser__contents-panel > div.oct-teaser__contents-panel--main-content > div > img.oct-image div.oct-teaser__contents-panel > div.oct-teaser__contents-panel--main-content > div > img.oct-image
/content/dam/mobile-app/roi_shop_images/01_DYSON_LOGO.dam...
div.oct-teaser__contents-panel > div.oct-teaser__contents-panel--main-content > div > img.oct-image div.oct-teaser__contents-panel > div.oct-teaser__contents-panel--main-content > div > img.oct-image
/content/dam/boots/brands/brand---m/marc-jacobs/marc-jaco...

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
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 24 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 1 animated element found
●Network Requests
●Network Round Trip Times 80 ms
●Server Backend Latencies 70 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
○INP breakdown
○Avoid large layout shifts
73

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

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#toggle-ticker > a.standard-ticker-container > label.switch > input div#toggle-ticker > a.standard-ticker-container > label.switch > input

When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn how to make command elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container div.oct-teaser__calls-to-action > a.oct-link > div.oct-button__content > div.oct-ripple-container
form.oct-signup__form > button.oct-button > div.oct-button__content > div.oct-ripple-container form.oct-signup__form > button.oct-button > div.oct-button__content > div.oct-ripple-container

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.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Boots Logo div#header > div#estore_header_top_row > div#logo > a

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
shopping with us div.row > div.acol12 > div.footer-section > h3.mobile_show

These are opportunities to improve keyboard navigation in your application.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#toggle-ticker > a.standard-ticker-container > label.switch > input div#toggle-ticker > a.standard-ticker-container > label.switch > input

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#header_link_container > ul#omniPresentLinksBar > li#mobileLink_search > a div#header_link_container > ul#omniPresentLinksBar > li#mobileLink_search > a
div#estore_footer > div#estore_partnerSitesLogo > div > a div#estore_footer > div#estore_partnerSitesLogo > div > a

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
div.oct-teaser__contents-panel > div.oct-teaser__contents-panel--main-content > div.oct-teaser__calls-to-action > a.oct-link div.oct-teaser__contents-panel > div.oct-teaser__contents-panel--main-content > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
FIND OUT MORE div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SHOP NOW div.oct-teaser__contents > div.oct-teaser__contents-panel > div.oct-teaser__calls-to-action > a.oct-link
SIGN UP div.oct-signup__container > div > form.oct-signup__form > button.oct-button

These items highlight common accessibility best practices.

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
No7 Prime Forever takeover div.oct-grid__cell > div.oct-htmlSlot > div#toggle-ticker > a.standard-ticker-container
Prepare for summer with hayfever relief, sun lotion, insect repellent & more. A… div.oct-grid > div.oct-grid__row > div.oct-grid__cell > div.oct-ticker-banner
Discover Remington Balder collection, designed for clean shaves, defined edges … div.oct-grid > div.oct-grid__row > div.oct-grid__cell > div.oct-ticker-banner
Book your travel vaccinations online today with the Travel Vaccinations & Healt… div.oct-grid > div.oct-grid__row > div.oct-grid__cell > div.oct-ticker-banner
Make more room for NEW beauty offers, available exclusively in the Boots app D… div.oct-grid > div.oct-grid__row > div.oct-grid__cell > div.oct-ticker-banner
○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-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
●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.
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
○`[accesskey]` values are unique
○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
○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.
○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.
77

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
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
www.boots.com/wcsstore/dojo18/dojo/dojo.js line 14, col 149603

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
www.boots.com/wcsstore/eBootsStorefrontAssetStore/images/manifest.json
Failed to load resource: net::ERR_TOO_MANY_REDIRECTS
TypeError: Cannot read properties of null (reading 'addEventListener') at <anonymous>:50:44 at https://www.boots.com/assets/vendor-bundle-f74ea760.js:1:1009002 at Array.forEach (<anonymous>) at rr (https://www.boots.com/assets/vendor-bundle-f74ea760.js:1:1008972) at qt (https://www.boots.com/assets/vendor-bundle-f74ea760.js:1:1007546) at https://www.boots.com/assets/vendor-bundle-f74ea760.js:1:1011342
TypeError: Cannot read properties of undefined (reading 'match') at <anonymous>:1:299 at https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:774:429 at vR (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:776:31) at Nd.uR (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:773:92) at Nd.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:323:187) at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:252:466) at gb (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:215:719) at fb (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:215:470) at Nd.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:276:473) at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-W26C7Q2:252:466)
www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/visitor.js line 163, col 54
TypeError: Cannot read properties of undefined (reading 'replace') at https://www.boots.com/wcsstore/eBootsStorefrontAssetStore/javascript/visitor.js:164:55

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
/ils-Moth-a-bluntry-owes-and-to-they-Thunds-till-/9744024...
www.boots.com/deot-thath-I-my-bothinke-you-weywarley-violent-C
www.boots.com/assets/vendor-bundle-f74ea760.js
/wcsstore/eBootsStorefrontAssetStore/javascript/Widgets/a...www.boots.com/dist/algolia.autocomplete.search.js.map
/FAQTAGENT-BOOTS-2021/penfield/0.0.2/js/sx_pres_functions.../FAQTAGENT-BOOTS-2021/penfield/0.0.2/js/sx_pres_functions...
●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 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
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
85

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.boots.com/shopping/advantage-card/advantage-card-terms-and-conditionshere
www.boots.com/privacypolicyMore information

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
Skip to navigation body.AT-2736 > div#accessibilityRolesContainer > a#skipToNav
body.AT-2736 > div#accessibilityRolesContainer > a#skipToMain body.AT-2736 > div#accessibilityRolesContainer > a#skipToMain
body.AT-2736 > div#accessibilityRolesContainer > a#skipToSeach body.AT-2736 > div#accessibilityRolesContainer > a#skipToSeach
div#header_link_container > ul#omniPresentLinksBar > li#mobileLink_burger > a#mobileBurgerMenuIcon div#header_link_container > ul#omniPresentLinksBar > li#mobileLink_burger > a#mobileBurgerMenuIcon
div#header_link_container > ul#omniPresentLinksBar > li#mobileLink_search > a div#header_link_container > ul#omniPresentLinksBar > li#mobileLink_search > a
div#global_navigation > ul#topLevelMenu > li#loggedIn_dropDown > a#loggedIn_dropDownLink
Menu li#loggedIn_dropDown > ul#loggedIn_dropDown_Options > li#loggedInMobileBackArrowContainer > a#myAccountBackMobile
Help  div#global_navigation > ul#topLevelMenu > li#storeHelpQuickLinkBurger > a#storeHelpQuickLink
x div#inactivityWarningPopup > div.dijitDialogPaneContent > div.widget_site_popup > a#inactivityWarningPopup_close

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
●Document has a meta description
●Page has successful HTTP status code
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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