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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.

27

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
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com60.0 s80.8 KiB
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js86400.0 s119.8 KiB
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...60.0 s43.5 KiB
beacon.riskified.com/?shop=weareallbirds.myshopify.com600.0 s17.5 KiB
/app/weareallbirds.myshopify.com/govx.js?shop=weareallbir...300.0 s7.0 KiB
/3.31.0/modern/plugins/rsa-plugins-legacyEncryptionUtils....3600.0 s5.3 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-RetryQueue.min.js3600.0 s3.8 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-common.min.js3600.0 s3.7 KiB
js.iterable.com/analytics.js0.0 ms2.7 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...300.0 s2.4 KiB
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/l...60.0 s2.1 KiB
/a/elevar/static/configs/f36f1dd17dff728b044638bc4ad9f157...1.0 s2.1 KiB
/logos/0b9f74e8-b9c3-40a2-9197-b5a394dea570/a2305201-1bee...86400.0 s4.9 KiB
/configs/f36f1dd17dff728b044638bc4ad9f1579fa7cda1/config.js1.0 s1.9 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-remote-XhrQueue.min.js3600.0 s1.7 KiB
cdn.trackjs.com/agent/v3/latest/t.js604800.0 s11.2 KiB
/a4flkt7l2b/z9gd/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/www...0.0 ms1.1 KiB
/a/elevar/static/configs/f36f1dd17dff728b044638bc4ad9f157...1.0 s1.0 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-remote-GoogleLinker.min.js3600.0 s1.3 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.5 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-OneTrustConsent...3600.0 s1.2 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-ExternalAnonymo...3600.0 s1.2 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins.js3600.0 s1.1 KiB
cdn.jsdelivr.net/npm/@loophq/onstore-sdk@latest/dist/loop-onstore-sdk.min.js604800.0 s8.3 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-StorageEncrypti...3600.0 s907 B
shop.app/checkouts/internal/preloads.js?locale=en-US&shop_id=1104416860.0 s551 B
/w37htfhcq2/z9g/digibox.gif?c=1775635895740&h=www.allbird...0.0 ms451 B
/usage.gif?token=5cfec9b7f4574339a9ce7274f57dedb4&correla...0.0 ms273 B
cdn.cookielaw.org/logos/static/ot_close.svg86400.0 s641 B
/img/image-l.gif?t=17756358996480.8120058776381756&c=zakb...0.0 ms207 B
/img/image-l.gif?t=17756358999570.22308184536131292&c=zak...0.0 ms206 B
/img/image-l.gif?t=17756359000730.045012577916107355&c=za...0.0 ms206 B
/img/image-l.gif?t=17756359001850.31221993109613&c=zakb8o...0.0 ms206 B
/img/image-l.gif?t=17756359002950.2275627385993495&c=zakb...0.0 ms206 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:32.331 source:map[column:26022 line:1 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/header.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:61.093 source:map[type:text value:[unattributed]]] map[reflowTime:0.792 source:map[column:132735 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:2.082 source:map[column:113693 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.415 source:map[column:112636 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.171 source:map[column:109855 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.321 source:map[column:35004 line:0 type:source-location url:https://www.allbirds.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js urlProvider:network]] map[reflowTime:15.877 source:map[column:5300 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/swiper-core.js urlProvider:network]] map[reflowTime:13.788 source:map[column:11285 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/swiper-core.js urlProvider:network]] map[reflowTime:1.753 source:map[column:17776 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/swiper-core.js urlProvider:network]] map[reflowTime:51.01 source:map[column:82363 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:13.959 source:map[column:100064 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:22.952 source:map[column:379 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/use-viewport-size.js urlProvider:network]] map[reflowTime:2.746 source:map[column:87669 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:1.343 source:map[column:87585 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.233 source:map[column:483 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/use-sticky-scroll-behavior.js urlProvider:network]] map[reflowTime:4.369 source:map[column:56453 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/swiper-core.js urlProvider:network]] map[reflowTime:2.195 source:map[column:193020 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:0.884 source:map[column:121465 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:0.465 source:map[column:122184 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:0.423 source:map[column:122242 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:0.431 source:map[column:122306 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:0.303 source:map[column:121487 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:0.595 source:map[column:123219 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:23.199 source:map[column:156952 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=0036016EDAA80E99066F39CFE5BC2BF2 urlProvider:network]] map[reflowTime:2.343 source:map[column:51544 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4071/assets/swiper-core.js 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.my-10 > div.grid > div.group > img.object-cover div.my-10 > div.grid > div.group > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Site_3xPromo-01_Deskto...409.0 KiB297.5 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Olive_Site_ColorGrid-0...294.4 KiB213.8 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Auburn_Site_ColorGrid-...281.7 KiB201.1 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Olive_Site_ColorGrid-0...230.4 KiB191.6 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Pink_Site_ColorGrid-01...263.4 KiB182.8 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_CBlue_Site_ColorGrid-0...233.2 KiB152.7 KiB
Women's Dasher NZ - Seagrass (Parchment Sole) div.swiper-wrapper > div.swiper-slide > a.block > img.w-full
/cdn/shop/files/A12286_26Q1_Dasher-NZ-Seagrass-Parchment_...173.0 KiB152.4 KiB
div.my-10 > div.grid > div.group > img.object-cover div.my-10 > div.grid > div.group > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Site_3xPromo-01_Deskto...250.6 KiB139.1 KiB
Men's Canvas Cruiser - Adventurous Auburn (Warm White Sole) div.swiper-wrapper > div.swiper-slide > a.block > img.w-full
/cdn/shop/files/A12438_26Q1_Cruiser-Canvas-Auburn-Warm-Wh...141.1 KiB124.2 KiB
Men's Varsity Jersey - Light Grey/Syrah (Blizzard Sole) div.swiper-wrapper > div.swiper-slide > a.block > img.w-full
/cdn/shop/files/A12542_26Q1_Mens-Varsity-Jersey-Light-Gre...134.0 KiB118.0 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_ABlue_Site_ColorGrid-0...174.0 KiB93.5 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_CBlue_Site_ColorGrid-0...112.7 KiB73.9 KiB
div.my-10 > div.grid > div.group > img.object-cover div.my-10 > div.grid > div.group > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Site_3xPromo-01_Deskto...153.7 KiB69.2 KiB
Men's Canvas Runner NZ - Deep Navy Stripes (Blizzard Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12500_26Q1_Runner-NZ-Canvas-Stripes-Deep...90.4 KiB65.7 KiB
Women's Tree Glider - Burlwood (Burlwood Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12467_26Q1_Tree-Glider-Burlwood-Burlwood...85.9 KiB62.4 KiB
Men's Dasher NZ - Seagrass (Parchment Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12286_26Q1_Dasher-NZ-Seagrass-Parchment_...84.7 KiB61.6 KiB
Women's Varsity Strap - Burlwood (Natural White Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12469_26Q2_Womens-Varsity-Strap-Burlwood...75.6 KiB54.9 KiB
Men's Cruiser Slip On Terry - Ochre/Warm White (Ochre Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12258_26Q1_Cruiser-Slip-On-Terry-Ochre-W...72.5 KiB52.7 KiB
Women's Breezer Mary Jane - Dusty Pink (Dusty Pink Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12378_26Q2_Breezer-Mary-Jane-Dusty-Pink-...69.3 KiB50.3 KiB
Men's Canvas Cruiser - Cultured Blue (Natural White Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A12852_26Q1_Cruiser-Canvas-Sea-Spray-Natu...66.9 KiB48.6 KiB
Women's Canvas Cruiser - Visionary Lilac (Natural White Sole) div.group > div.relative > a.absolute > img.pointer-events-none
/cdn/shop/files/A13118_26Q1_Cruiser-Canvas-Stormy-Lilac-N...64.2 KiB46.6 KiB
div.auto-flow-row > div.relative > a.size-full > img.object-cover div.auto-flow-row > div.relative > a.size-full > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Auburn_Site_ColorGrid-...51.9 KiB38.7 KiB
div.auto-flow-row > div.relative > a.size-full > img.object-cover div.auto-flow-row > div.relative > a.size-full > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_CBlue_Site_ColorGrid-0...42.6 KiB31.8 KiB
div.auto-flow-row > div.relative > a.size-full > img.object-cover div.auto-flow-row > div.relative > a.size-full > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Olive_Site_ColorGrid-0...41.9 KiB31.3 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Pink_Site_ColorGrid-04...55.4 KiB29.5 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Auburn_Site_ColorGrid-...52.4 KiB27.9 KiB
div.auto-flow-row > div.relative > a.size-full > img.object-cover div.auto-flow-row > div.relative > a.size-full > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Pink_Site_ColorGrid-02...35.1 KiB26.2 KiB
div.auto-flow-row > div.relative > a.size-full > img.object-cover div.auto-flow-row > div.relative > a.size-full > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_ABlue_Site_ColorGrid-0...32.8 KiB24.4 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_ABlue_Site_ColorGrid-0...20.9 KiB11.1 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Auburn_Site_ColorGrid-...6.5 KiB4.9 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Olive_Site_ColorGrid-0...5.7 KiB4.3 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_CBlue_Site_ColorGrid-0...5.7 KiB4.3 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_Pink_Site_ColorGrid-03...5.7 KiB4.2 KiB
div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover div.swiper-slide > div.auto-flow-row > div.relative > img.object-cover
/cdn/shop/files/26Q2_CanvasCruiser_ABlue_Site_ColorGrid-0...5.7 KiB4.2 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:151.114 label:Time to first byte subpart:timeToFirstByte] map[duration:230.581 label:Resource load delay subpart:resourceLoadDelay] map[duration:333.946 label:Resource load duration subpart:resourceLoadDuration] map[duration:1932.826 label:Element render delay subpart:elementRenderDelay]]
lhId: page-34-VIDEO
nodeLabel: ul.swiper-wrapper > li.swiper-slide > span.group/video-player > video#video-27693367623760
path: 1,HTML,1,BODY,10,MAIN,0,SECTION,0,DIV,0,DIV,0,UL,0,LI,1,SPAN,0,VIDEO
selector: ul.swiper-wrapper > li.swiper-slide > span.group/video-player > video#video-27693367623760
snippet: <video autoplay="" playsinline="" loop="" class="block md:hidden w-full h-full object-cover" id="video-27693367623760" poster="//www.allbirds.com/cdn/shop/files/preview_images/e0585c5b092c45e2bb6877cba…" preload="auto">

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-34-VIDEO
nodeLabel: ul.swiper-wrapper > li.swiper-slide > span.group/video-player > video#video-27693367623760
path: 1,HTML,1,BODY,10,MAIN,0,SECTION,0,DIV,0,DIV,0,UL,0,LI,1,SPAN,0,VIDEO
selector: ul.swiper-wrapper > li.swiper-slide > span.group/video-player > video#video-27693367623760
snippet: <video autoplay="" playsinline="" loop="" class="block md:hidden w-full h-full object-cover" id="video-27693367623760" poster="//www.allbirds.com/cdn/shop/files/preview_images/e0585c5b092c45e2bb6877cba…" preload="auto">

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.

URLTransfer SizeDuration
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...43.5 KiB1.3 s
www.allbirds.com/cdn/shop/t/4071/assets/cart-drawer-section.css2.2 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...2.4 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: 855 ms
URLTime Spent
allbirds.com/855 ms
www.allbirds.com/0.0 ms

Diagnostics

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: 750 ms 703.0 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ182.0 KiB74.5 KiB
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/m...116.3 KiB68.6 KiB
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6461h1168.5 KiB67.9 KiB
www.googletagmanager.com/gtag/js?id=AW-786649265&cx=c&gtm=4e6461h1144.2 KiB64.4 KiB
www.googletagmanager.com/gtag/js?id=AW-935878905&cx=c&gtm=4e6461h1144.6 KiB63.9 KiB
www.googletagmanager.com/gtag/js?id=AW-736740096&cx=c&gtm=4e6461h1144.1 KiB63.8 KiB
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js119.7 KiB62.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-WWZFMZRX154.7 KiB62.2 KiB
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com80.3 KiB53.7 KiB
www.allbirds.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js59.8 KiB27.2 KiB
www.allbirds.com/cdn/shop/t/4071/assets/theme2.js33.4 KiB26.1 KiB
www.allbirds.com/cdn/shop/t/4071/assets/vue.esm-bundler.js60.7 KiB23.5 KiB
/assets/chat-sdk/vendor-node_modules_reduxjs_toolkit_dist...46.9 KiB22.3 KiB
www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js64.2 KiB22.2 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
Unattributable3.4 s190 ms0.0 ms
www.allbirds.com/2.3 s364 ms59 ms
www.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js2.0 s798 ms1.4 ms
www.allbirds.com/cdn/shop/t/4071/assets/header.js1.3 s932 ms0.5 ms
www.googletagmanager.com/gtag/js?id=AW-736740096&cx=c&gtm=4e6461h1891 ms812 ms70 ms
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/m...780 ms533 ms69 ms
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ635 ms528 ms98 ms
www.allbirds.com/cdn/shop/t/4071/assets/footer.js576 ms379 ms0.2 ms
www.googletagmanager.com/gtag/js?id=AW-935878905&cx=c&gtm=4e6461h1505 ms430 ms70 ms
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js491 ms318 ms101 ms
www.googletagmanager.com/gtm.js?id=GTM-WWZFMZRX491 ms407 ms77 ms
/cdn/shopifycloud/storefront/assets/shop_events_listener-...468 ms403 ms2.5 ms
www.allbirds.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js465 ms424 ms30 ms
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6461h1424 ms333 ms86 ms
cdn.gladly.com/assets/chat-sdk/apiBootstrap~fbe01ce338bec8bd.js414 ms389 ms23 ms
cdn.trackjs.com/agent/v3/latest/t.js386 ms316 ms13 ms
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...372 ms264 ms45 ms
www.googletagmanager.com/gtag/js?id=AW-786649265&cx=c&gtm=4e6461h1285 ms212 ms71 ms
beacon.riskified.com/?shop=weareallbirds.myshopify.com284 ms260 ms15 ms
www.allbirds.com/cdn/shop/t/4071/assets/standard-product-carousel.js275 ms214 ms0.2 ms
www.allbirds.com/cdn/shop/t/4071/assets/category-row.js250 ms130 ms0.2 ms
www.allbirds.com/cdn/shop/t/4071/assets/color-grid.js235 ms145 ms0.2 ms
www.allbirds.com/cdn/shop/t/4071/assets/global-banner.js233 ms166 ms0.2 ms
/cdn/s/trekkie.storefront.e683ac02f599017ff9915d0144977db...187 ms128 ms21 ms
www.allbirds.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js179 ms158 ms9.8 ms
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com151 ms106 ms44 ms
www.allbirds.com/cdn/shop/t/4071/assets/post-atc-modal-section.js149 ms113 ms0.2 ms
www.allbirds.com/cdn/shop/t/4071/assets/swiper-core.js145 ms30 ms0.5 ms
jssdk.allbirds.com/v3/modern/rsa.min.js143 ms122 ms18 ms
/cdn/shopifycloud/storefront/assets/shopify_pay/storefron...132 ms117 ms12 ms
www.allbirds.com/cdn/shop/t/4071/assets/cart-drawer-section.js115 ms84 ms0.5 ms
/cdn/shopifycloud/shop-js/modules/v2/chunk.index_4uAqGWkW...104 ms98 ms1.0 ms
/cdn/shopifycloud/storefront/assets/storefront/load_featu...100 ms96 ms2.5 ms
www.allbirds.com/cdn/shop/t/4071/assets/autoplay.js91 ms91 ms0.1 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js85 ms78 ms4.8 ms
www.allbirds.com/cdn/shop/t/4071/assets/large-product-carousel.js72 ms61 ms0.2 ms
cdn.gladly.com/chat-sdk/widget.js?q=177563589520152 ms45 ms7.0 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 Evaluation10.8 s
Other4.8 s
Style & Layout1.9 s
Script Parsing & Compilation1.1 s
Parse HTML & CSS882 ms
Rendering383 ms
Garbage Collection297 ms

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 19.5 KiB
URLTransfer SizeEst Savings
21.8 KiB19.5 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
/cdn/shop/videos/c/vp/e0585c5b092c45e2bb6877cbabd8e30c/e0...7.9 MiB
/cdn/shop/files/26Q2_CanvasCruiser_Site_3xPromo-01_Deskto...409.9 KiB
/cdn/shopifycloud/checkout-web/assets/c1/hooks-ButtonWith...346.2 KiB
/cdn/shop/files/26Q2_CanvasCruiser_Olive_Site_ColorGrid-0...295.3 KiB
/cdn/shop/files/26Q2_CanvasCruiser_Auburn_Site_ColorGrid-...282.6 KiB
/cdn/shop/files/26Q2_CanvasCruiser_Pink_Site_ColorGrid-01...264.3 KiB
/cdn/shop/files/26Q2_CanvasCruiser_Site_3xPromo-01_Deskto...251.5 KiB
/cdn/shop/files/26Q2_CanvasCruiser_CBlue_Site_ColorGrid-0...234.1 KiB
/cdn/shop/files/26Q2_CanvasCruiser_Olive_Site_ColorGrid-0...231.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ182.3 KiB

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

●Layout shift culprits
●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 21 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`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 140 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
●Avoid large layout shifts 10 layout shifts found
○INP breakdown
97

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.

Names and labels

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.flex > div.flex > div.flex > a.text-sm div.flex > div.flex > div.flex > a.text-sm

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.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●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.
●`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
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
●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
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○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.
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
SharedStorage
cdn.trackjs.com/agent/v3/latest/t.js line 16, col 201

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.allbirds.com/cdn/shop/t/4071/assets/ScrollTrigger.js line 7, col 10293
%c RS SDK %c OneTrustConsentManagerPlugin:: Failed to access OneTrust SDK resources. Please ensure that the OneTrust SDK is loaded successfully before RudderStack SDK. font-weight: bold; background: black; color: white; font-weight: normal;
cdn.cookielaw.org/consent/undefined/OtAutoBlock.js
Failed to load resource: the server responded with a status of 404 ()
/main.js?widget_id=l3cmm7m70dmwcb2&shop=weareallbirds.mys...
Failed to load resource: the server responded with a status of 429 ()
●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
●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
92

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.allbirds.co.uk/policies/privacy-policyMore information

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

○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 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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