C — https://allbirds.com | BeaverCheck Audit

Site Health

Score: 73 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

Page weighs 13.5 MB (8.4 MB transferred)

Performance › Page Weight Budget

1 link(s) with no accessible text

Accessibility › Link & Button Quality

26 image-only link(s) without alt text

Accessibility › Link & Button Quality

8 button(s) with no accessible text

Accessibility › Link & Button Quality

8 control(s) without accessible label

Accessibility › Form Accessibility

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fallbirds.com)](https://beavercheck.com/results/e7491c6b-044d-4392-b48c-e5e6297a8aee)

HTML

<a href="https://beavercheck.com/results/e7491c6b-044d-4392-b48c-e5e6297a8aee"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fallbirds.com" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fallbirds.com

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

100

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

6.99 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

22.40 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

5.27 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.026

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

14.08 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

36.27 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

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

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Request	Cache TTL	Transfer Size
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com	60.0 s	80.6 KiB
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js	86400.0 s	119.8 KiB
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	60.0 s	43.5 KiB
beacon.riskified.com/?shop=weareallbirds.myshopify.com	600.0 s	17.3 KiB
/app/weareallbirds.myshopify.com/govx.js?shop=weareallbir...	300.0 s	7.0 KiB
/3.31.0/modern/plugins/rsa-plugins-legacyEncryptionUtils....	3600.0 s	5.3 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-RetryQueue.min.js	3600.0 s	3.8 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-common.min.js	3600.0 s	3.7 KiB
js.iterable.com/analytics.js	0.0 ms	2.7 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	300.0 s	2.4 KiB
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/l...	60.0 s	2.1 KiB
/a/elevar/static/configs/f36f1dd17dff728b044638bc4ad9f157...	1.0 s	2.1 KiB
/logos/0b9f74e8-b9c3-40a2-9197-b5a394dea570/a2305201-1bee...	86400.0 s	4.9 KiB
/configs/f36f1dd17dff728b044638bc4ad9f1579fa7cda1/config.js	1.0 s	1.9 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-remote-XhrQueue.min.js	3600.0 s	1.7 KiB
cdn.trackjs.com/agent/v3/latest/t.js	604800.0 s	11.2 KiB
/a4flkt7l2b/z9gd/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/www...	0.0 ms	1.1 KiB
/a/elevar/static/configs/f36f1dd17dff728b044638bc4ad9f157...	1.0 s	1.0 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-remote-GoogleLinker.min.js	3600.0 s	1.3 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-OneTrustConsent...	3600.0 s	1.2 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-ExternalAnonymo...	3600.0 s	1.2 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins.js	3600.0 s	1.1 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg	86400.0 s	2.1 KiB
cdn.jsdelivr.net/npm/@loophq/onstore-sdk@latest/dist/loop-onstore-sdk.min.js	604800.0 s	8.3 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-StorageEncrypti...	3600.0 s	907 B
shop.app/checkouts/internal/preloads.js?locale=en-US&shop_id=11044168	60.0 s	559 B
/w37htfhcq2/z9g/digibox.gif?c=1775319803325&h=www.allbird...	0.0 ms	390 B
/usage.gif?token=5cfec9b7f4574339a9ce7274f57dedb4&correla...	0.0 ms	273 B
cdn.cookielaw.org/logos/static/ot_close.svg	86400.0 s	645 B
/img/image-l.gif?t=17753198078840.6236373184952533&c=hwhn...	0.0 ms	207 B
/img/image-l.gif?t=17753198082130.3501298571311685&c=hwhn...	0.0 ms	206 B
/img/image-l.gif?t=17753198083330.018812185977588047&c=hw...	0.0 ms	206 B
/img/image-l.gif?t=17753198084500.42513680076717086&c=hwh...	0.0 ms	206 B
/img/image-l.gif?t=17753198085630.20114795330810653&c=hwh...	0.0 ms	206 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

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.

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:129.717 source:map[column:442 line:4 type:source-location url:https://cdn.trackjs.com/agent/v3/latest/t.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:60.781 source:map[column:132735 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:2.01 source:map[column:113693 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.29 source:map[column:112636 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.123 source:map[column:109855 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:16.592 source:map[column:5300 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:13.749 source:map[column:11285 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:2.914 source:map[column:17776 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:54.344 source:map[column:82363 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:11.459 source:map[column:100064 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:17.346 source:map[column:379 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/use-viewport-size.js urlProvider:network]] map[reflowTime:2.909 source:map[column:87669 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:1.513 source:map[column:87585 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:0.291 source:map[column:483 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/use-sticky-scroll-behavior.js urlProvider:network]] map[reflowTime:1.678 source:map[column:1406 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/scrollbar.js urlProvider:network]] map[reflowTime:5.419 source:map[column:56453 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:29.074 source:map[column:119823 line:0 type:source-location url:https://www.allbirds.com/cdn/wpm/bcfa8229ew36b6053dp1e134caame9d83f21m.js urlProvider:network]] map[reflowTime:5.182 source:map[column:51544 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:3.009 source:map[column:67927 line:0 type:source-location url:https://jssdk.allbirds.com/v3/modern/rsa.min.js urlProvider:network]] map[reflowTime:36.458 source:map[type:text value:[unattributed]]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

	URL	Resource Size	Est Savings
div.swiper-slide > div > div.relative > img.rounded-3xl `div.swiper-slide > div > div.relative > img.rounded-3xl`	/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	300.2 KiB	202.6 KiB
Men's Varsity Airy - Mushroom (Blizzard Sole) `div.swiper-wrapper > div.swiper-slide > a.block > img.w-full`	/cdn/shop/files/A12569_26Q1_Mens-Varsity-Airy-Mushroom-Bl...	158.3 KiB	139.4 KiB
Women's Varsity Airy - Auburn (Natural White Sole) `div.swiper-wrapper > div.swiper-slide > a.block > img.w-full`	/cdn/shop/files/A12433_26Q2_Womens-Varsity-Airy-Auburn-Na...	156.3 KiB	137.6 KiB
Men's Dasher NZ - Light Burnt Olive (Natural White Sole) `div.swiper-wrapper > div.swiper-slide > a.block > img.w-full`	/cdn/shop/files/A12519_26Q1_Dasher-NZ-Light-Burnt-Olive-N...	144.5 KiB	127.2 KiB
div.my-10 > div.grid > div.group > img.object-cover `div.my-10 > div.grid > div.group > img.object-cover`	/cdn/shop/files/26Q1_VarsityAiry_Site_3xPromo-01_Desktop-...	224.3 KiB	112.7 KiB
ul.swiper-wrapper > li.swiper-slide > span.hidden > img.block `ul.swiper-wrapper > li.swiper-slide > span.hidden > img.block`	/cdn/shop/files/26Q1_VarsityAiry_Site_Homepage_Hero_Mobil...	240.2 KiB	105.1 KiB
div.swiper-slide > div > div.relative > img.rounded-3xl `div.swiper-slide > div > div.relative > img.rounded-3xl`	/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	179.3 KiB	93.9 KiB
Men's Tree Runner NZ - Burnt Olive (Burnt Olive Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12485_26Q1_Tree-Runner-NZ-Burnt-Olive-Bu...	81.5 KiB	59.2 KiB
Women's Tree Glider - Warm White/Multi (Natural White Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12366_26Q1_Tree-Glider-Warm-White-Multi-...	75.3 KiB	54.7 KiB
Men's Tree Runner - Jet Black (White Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/TR3MJBW080_SHOE_LEFT_GLOBAL_MENS_TREE_RUN...	68.3 KiB	49.6 KiB
Women's Breezer Mary Jane - Warm Red (Dark Anthracite Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12121_25Q4_Breezer-Mary-Jane-Warm-Red-Da...	64.9 KiB	47.2 KiB
Women's Varsity - Multi (Natural White Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12581_26Q2_Womens-Varsity-Multi-Natural-...	62.1 KiB	45.1 KiB
Men's Varsity - Parchment (Blizzard Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12270_26Q1_Mens-Varsity-Parchment-Blizza...	51.7 KiB	37.5 KiB
Men's Varsity Terralux™ - Light Grey (Light Grey Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12526_26Q2_Varsity-Terralux-Light-Grey-L...	47.7 KiB	34.6 KiB
Women's Tree Breezer - Jet Black (Black Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/TB1WJBK_SHOE_LEFT_GLOBAL_WOMENS_TREE_BREE...	38.4 KiB	27.9 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	32.1 KiB	16.2 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	30.4 KiB	15.3 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	27.0 KiB	13.6 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	23.5 KiB	11.8 KiB

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

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:141.837 label:Time to first byte subpart:timeToFirstByte] map[duration:159.379 label:Resource load delay subpart:resourceLoadDelay] map[duration:305.51 label:Resource load duration subpart:resourceLoadDuration] map[duration:2863.396 label:Element render delay subpart:elementRenderDelay]]

lhId: page-19-IMG

nodeLabel: ul.swiper-wrapper > li.swiper-slide > span.hidden > img.block

path: 1,HTML,1,BODY,10,MAIN,1,SECTION,0,DIV,0,DIV,0,UL,1,LI,1,SPAN,0,IMG

selector: ul.swiper-wrapper > li.swiper-slide > span.hidden > img.block

snippet: <img fetchpriority="auto" alt="" class="block md:hidden w-full h-full object-cover" height="1846" loading="eager" src="//www.allbirds.com/cdn/shop/files/26Q1_DasherNZ_Site_Homepage_Hero_Mobile_…" width="1024">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

lhId: page-19-IMG

nodeLabel: ul.swiper-wrapper > li.swiper-slide > span.hidden > img.block

path: 1,HTML,1,BODY,10,MAIN,1,SECTION,0,DIV,0,DIV,0,UL,1,LI,1,SPAN,0,IMG

selector: ul.swiper-wrapper > li.swiper-slide > span.hidden > img.block

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.

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.

URL	Transfer Size	Duration
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	43.5 KiB	1.3 s
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	2.4 KiB
www.allbirds.com/cdn/shop/t/4054/assets/cart-drawer-section.css	2.2 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.

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.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Estimated savings: 839 ms

URL	Time Spent
allbirds.com/	839 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.

Estimated savings: 1.1 s 819.1 KiB

URL	Transfer Size	Est Savings
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js	155.2 KiB	77.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ	181.3 KiB	75.6 KiB
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/m...	116.1 KiB	68.4 KiB
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6411	167.9 KiB	67.5 KiB
www.googletagmanager.com/gtag/js?id=AW-736740096&cx=c&gtm=4e6420h2	143.6 KiB	64.0 KiB
www.googletagmanager.com/gtag/js?id=AW-786649265&cx=c&gtm=4e6420h2	143.6 KiB	63.4 KiB
www.googletagmanager.com/gtag/js?id=AW-935878905&cx=c&gtm=4e6411	143.7 KiB	63.1 KiB
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js	119.7 KiB	62.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-WWZFMZRX	153.7 KiB	59.0 KiB
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com	80.2 KiB	53.6 KiB
www.allbirds.com/cdn/shop/t/4054/assets/theme2.js	33.3 KiB	26.1 KiB
www.allbirds.com/cdn/wpm/bcfa8229ew36b6053dp1e134caame9d83f21m.js	56.8 KiB	25.6 KiB
www.allbirds.com/cdn/shop/t/4054/assets/vue.esm-bundler.js	60.7 KiB	23.5 KiB
/assets/chat-sdk/vendor-node_modules_reduxjs_toolkit_dist...	46.9 KiB	23.1 KiB
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	43.2 KiB	22.8 KiB
www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js	64.2 KiB	22.5 KiB
s.pinimg.com/ct/lib/main.34af66ec.js	35.9 KiB	20.4 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.

URL	Total CPU Time	Script Evaluation	Script Parse
cdn.trackjs.com/agent/v3/latest/t.js	4.5 s	3.3 s	5.2 ms
www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js	3.2 s	571 ms	2.1 ms
Unattributable	2.8 s	172 ms	0.0 ms
www.allbirds.com/	2.3 s	175 ms	47 ms
www.googletagmanager.com/gtm.js?id=GTM-WWZFMZRX	946 ms	823 ms	112 ms
/app/weareallbirds.myshopify.com/govx.js?shop=weareallbir...	862 ms	858 ms	3.1 ms
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ	823 ms	678 ms	134 ms
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/m...	796 ms	629 ms	74 ms
www.googletagmanager.com/gtag/js?id=AW-935878905&cx=c&gtm=4e6411	595 ms	424 ms	81 ms
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6411	565 ms	467 ms	92 ms
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js	559 ms	393 ms	87 ms
cdn.gladly.com/assets/chat-sdk/apiBootstrap~3d2f3ae3ce0b8979.js	525 ms	447 ms	74 ms
jssdk.allbirds.com/v3/modern/rsa.min.js	486 ms	446 ms	16 ms
www.googletagmanager.com/gtag/js?id=AW-736740096&cx=c&gtm=4e6420h2	483 ms	410 ms	71 ms
www.googletagmanager.com/gtag/js?id=AW-786649265&cx=c&gtm=4e6420h2	439 ms	370 ms	64 ms
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	425 ms	299 ms	28 ms
www.allbirds.com/cdn/wpm/bcfa8229ew36b6053dp1e134caame9d83f21m.js	388 ms	336 ms	39 ms
beacon.riskified.com/?shop=weareallbirds.myshopify.com	256 ms	238 ms	8.8 ms
www.allbirds.com/cdn/shop/t/4054/assets/autoplay.js	256 ms	256 ms	0.1 ms
www.allbirds.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js	255 ms	166 ms	24 ms
/cdn/shopifycloud/shop-js/modules/v2/chunk.index_4uAqGWkW...	175 ms	168 ms	1.2 ms
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com	154 ms	107 ms	46 ms
/cdn/shopifycloud/storefront/assets/shopify_pay/storefron...	152 ms	135 ms	14 ms
www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js	137 ms	27 ms	0.6 ms
/cdn/s/trekkie.storefront.793024e5c781b83428b9784ec5054da...	134 ms	110 ms	21 ms
/cdn/shopifycloud/storefront/assets/storefront/load_featu...	101 ms	96 ms	3.8 ms
cdn.gladly.com/chat-sdk/widget.js?q=1775319802743	98 ms	83 ms	15 ms
/cdn/shopifycloud/consent-tracking-api/v0.1/consent-track...	71 ms	66 ms	0.3 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js	56 ms	40 ms	4.5 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

Category	Time Spent
Script Evaluation	12.7 s
Other	5.1 s
Style & Layout	2.3 s
Script Parsing & Compilation	1.2 s
Parse HTML & CSS	932 ms
Rendering	830 ms
Garbage Collection	253 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.

Estimated savings: 0.0 ms 19.5 KiB

URL	Transfer Size	Est Savings
	21.8 KiB	19.5 KiB

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

URL	Transfer Size
/cdn/shop/files/26Q1_DasherNZ_Site_Homepage_Hero_Desktop_...	535.1 KiB
/cdn/shop/files/26Q1_VarsityAiry_Site_Homepage_Hero_Deskt...	504.3 KiB
/cdn/shopifycloud/checkout-web/assets/c1/hooks-useHasOrde...	344.7 KiB
/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	301.1 KiB
/cdn/shop/files/26Q1_VarsityAiry_Site_Homepage_Hero_Mobil...	241.1 KiB
/cdn/shop/files/26Q1_VarsityAiry_Site_3xPromo-01_Desktop-...	225.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ	181.7 KiB
/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	180.2 KiB
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6411	168.0 KiB
/cdn/shop/files/26Q1_DasherNZ_Site_Navigation_FullTile_Wo...	162.7 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 410 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 6 layout shifts found

○INP breakdown

100

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.

○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

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

●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

○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

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

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

Deprecation / Warning	Source
AttributionReporting	cdn.trackjs.com/agent/v3/latest/t.js line 22, col 148

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

Source	Description
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

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.

Link destination	Link Text
www.allbirds.co.uk/policies/privacy-policy	More 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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

100

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.34 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.98 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

961 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.010

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.73 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

8.30 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Request	Cache TTL	Transfer Size
/main.js?widget_id=l3cmm7m70dmwcb2&shop=weareallbirds.mys...	300.0 s	107.1 KiB
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com	60.0 s	80.7 KiB
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js	86400.0 s	119.8 KiB
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	60.0 s	43.5 KiB
beacon.riskified.com/?shop=weareallbirds.myshopify.com	600.0 s	17.3 KiB
/app/weareallbirds.myshopify.com/govx.js?shop=weareallbir...	300.0 s	7.0 KiB
/3.31.0/modern/plugins/rsa-plugins-legacyEncryptionUtils....	3600.0 s	5.3 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-RetryQueue.min.js	3600.0 s	3.8 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-common.min.js	3600.0 s	3.7 KiB
js.iterable.com/analytics.js	0.0 ms	2.7 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	300.0 s	2.4 KiB
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/l...	60.0 s	2.1 KiB
/a/elevar/static/configs/f36f1dd17dff728b044638bc4ad9f157...	1.0 s	2.1 KiB
/logos/0b9f74e8-b9c3-40a2-9197-b5a394dea570/a2305201-1bee...	86400.0 s	4.9 KiB
/configs/f36f1dd17dff728b044638bc4ad9f1579fa7cda1/config.js	1.0 s	1.9 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-remote-XhrQueue.min.js	3600.0 s	1.7 KiB
cdn.trackjs.com/agent/v3/latest/t.js	604800.0 s	11.2 KiB
/a/elevar/static/configs/f36f1dd17dff728b044638bc4ad9f157...	1.0 s	1.0 KiB
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins-remote-GoogleLinker.min.js	3600.0 s	1.3 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-OneTrustConsent...	3600.0 s	1.2 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-ExternalAnonymo...	3600.0 s	1.2 KiB
/a4flkt7l2b/z9gd/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/www...	0.0 ms	928 B
jssdk.allbirds.com/3.31.0/modern/plugins/rsa-plugins.js	3600.0 s	1.1 KiB
cdn.jsdelivr.net/npm/@loophq/onstore-sdk@latest/dist/loop-onstore-sdk.min.js	604800.0 s	8.6 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg	86400.0 s	2.1 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-StorageEncrypti...	3600.0 s	907 B
shop.app/checkouts/internal/preloads.js?locale=en-US&shop_id=11044168	60.0 s	550 B
/w37htfhcq2/z9g/digibox.gif?c=1775319845987&h=www.allbird...	0.0 ms	451 B
/usage.gif?token=5cfec9b7f4574339a9ce7274f57dedb4&correla...	0.0 ms	273 B
cdn.cookielaw.org/logos/static/ot_close.svg	86400.0 s	622 B
/img/image-l.gif?t=17753198500160.21675516208349843&c=nla...	0.0 ms	207 B
/img/image-l.gif?t=17753198503590.3075502454287281&c=nla9...	0.0 ms	206 B
/img/image-l.gif?t=17753198504990.2989593661268335&c=nla9...	0.0 ms	206 B
/img/image-l.gif?t=17753198506650.25103167401524806&c=nla...	0.0 ms	206 B
/img/image-l.gif?t=17753198510320.4923732492139482&c=nla9...	0.0 ms	206 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

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:37.411 source:map[column:442 line:4 type:source-location url:https://cdn.trackjs.com/agent/v3/latest/t.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:39.646 source:map[type:text value:[unattributed]]] map[reflowTime:2.095 source:map[column:113693 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:43.202 source:map[column:5300 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:22.35 source:map[column:11285 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:4.961 source:map[column:17776 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js urlProvider:network]] map[reflowTime:54.762 source:map[column:82363 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:14.612 source:map[column:100064 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:3.081 source:map[column:483 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/use-sticky-scroll-behavior.js urlProvider:network]] map[reflowTime:2.067 source:map[column:87669 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:1.062 source:map[column:87585 line:7 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js urlProvider:network]] map[reflowTime:1.622 source:map[column:1406 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/assets/scrollbar.js urlProvider:network]] map[reflowTime:34.181 source:map[column:157537 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:0.893 source:map[column:193020 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:1.051 source:map[column:121465 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:0.707 source:map[column:122184 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:0.479 source:map[column:122242 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:0.44 source:map[column:122306 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:0.334 source:map[column:121487 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:0.853 source:map[column:123219 line:0 type:source-location url:https://popupform.allbirds.com/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/main.js?cb=82886068C4DADB1CB2033C792466D591 urlProvider:network]] map[reflowTime:3.14 source:map[column:51544 line:0 type:source-location url:https://www.allbirds.com/cdn/shop/t/4054/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

	URL	Resource Size	Est Savings
	/cdn/shop/files/26Q1_DasherNZ_Site_Homepage_Hero_Desktop_...	534.0 KiB	322.3 KiB
	/cdn/shop/files/26Q1_VarsityAiry_Site_Homepage_Hero_Deskt...	503.3 KiB	300.6 KiB
div.my-10 > div.grid > div.group > img.object-cover `div.my-10 > div.grid > div.group > img.object-cover`	/cdn/shop/files/SS26_CH2_Varsity__Site_3xPromo-01_Desktop...	244.6 KiB	199.4 KiB
div.my-10 > div.grid > div.group > img.object-cover `div.my-10 > div.grid > div.group > img.object-cover`	/cdn/shop/files/26Q1_VarsityAiry_Site_3xPromo-01_Desktop-...	224.3 KiB	179.1 KiB
Men's Varsity Airy - Mushroom (Blizzard Sole) `div.swiper-wrapper > div.swiper-slide > a.block > img.w-full`	/cdn/shop/files/A12569_26Q1_Mens-Varsity-Airy-Mushroom-Bl...	158.3 KiB	130.1 KiB
Women's Varsity Airy - Auburn (Natural White Sole) `div.swiper-wrapper > div.swiper-slide > a.block > img.w-full`	/cdn/shop/files/A12433_26Q2_Womens-Varsity-Airy-Auburn-Na...	156.3 KiB	128.5 KiB
Men's Dasher NZ - Light Burnt Olive (Natural White Sole) `div.swiper-wrapper > div.swiper-slide > a.block > img.w-full`	/cdn/shop/files/A12519_26Q1_Dasher-NZ-Light-Burnt-Olive-N...	144.5 KiB	118.8 KiB
div.my-10 > div.grid > div.group > img.object-cover `div.my-10 > div.grid > div.group > img.object-cover`	/cdn/shop/files/26Q1_Terralux_Site_3xPromo-01_Desktop-Mob...	152.1 KiB	118.2 KiB
div.swiper-slide > div > div.relative > img.rounded-3xl `div.swiper-slide > div > div.relative > img.rounded-3xl`	/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	300.2 KiB	95.1 KiB
Men's Tree Runner NZ - Burnt Olive (Burnt Olive Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12485_26Q1_Tree-Runner-NZ-Burnt-Olive-Bu...	81.5 KiB	71.2 KiB
Women's Tree Glider - Warm White/Multi (Natural White Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12366_26Q1_Tree-Glider-Warm-White-Multi-...	75.3 KiB	65.7 KiB
Men's Tree Runner - Jet Black (White Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/TR3MJBW080_SHOE_LEFT_GLOBAL_MENS_TREE_RUN...	68.3 KiB	59.6 KiB
Women's Breezer Mary Jane - Warm Red (Dark Anthracite Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12121_25Q4_Breezer-Mary-Jane-Warm-Red-Da...	64.9 KiB	56.7 KiB
Women's Varsity - Multi (Natural White Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12581_26Q2_Womens-Varsity-Multi-Natural-...	62.1 KiB	54.2 KiB
Men's Varsity - Parchment (Blizzard Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12270_26Q1_Mens-Varsity-Parchment-Blizza...	51.7 KiB	45.1 KiB
Men's Varsity Terralux™ - Light Grey (Light Grey Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/A12526_26Q2_Varsity-Terralux-Light-Grey-L...	47.7 KiB	41.6 KiB
Women's Tree Breezer - Jet Black (Black Sole) `div.group > div.relative > a.absolute > img.pointer-events-none`	/cdn/shop/files/TB1WJBK_SHOE_LEFT_GLOBAL_WOMENS_TREE_BREE...	38.4 KiB	33.6 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	32.1 KiB	25.0 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	30.4 KiB	23.7 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	27.0 KiB	21.0 KiB
ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image `ul.swiper-wrapper > li.swiper-slide > span > img.category-row-item-hover-image`	/cdn/shop/files/26Q1_MarchBAU_Site_Homepage_CategoryRow-0...	23.5 KiB	18.3 KiB

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

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:1180.5159999995233 label:Time to first byte subpart:timeToFirstByte] map[duration:201.02200000047685 label:Resource load delay subpart:resourceLoadDelay] map[duration:320.903 label:Resource load duration subpart:resourceLoadDuration] map[duration:2281.455 label:Element render delay subpart:elementRenderDelay]]

lhId: page-19-IMG

nodeLabel: div.swiper > ul.swiper-wrapper > li.swiper-slide > img.hidden

path: 1,HTML,1,BODY,10,MAIN,1,SECTION,0,DIV,0,DIV,0,UL,1,LI,0,IMG

selector: div.swiper > ul.swiper-wrapper > li.swiper-slide > img.hidden

snippet: <img fetchpriority="auto" alt="" class="hidden md:block w-full h-full object-cover" height="1442" loading="eager" src="//www.allbirds.com/cdn/shop/files/26Q1_DasherNZ_Site_Homepage_Hero_Desktop…" width="2560">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

lhId: page-19-IMG

nodeLabel: div.swiper > ul.swiper-wrapper > li.swiper-slide > img.hidden

path: 1,HTML,1,BODY,10,MAIN,1,SECTION,0,DIV,0,DIV,0,UL,1,LI,0,IMG

selector: div.swiper > ul.swiper-wrapper > li.swiper-slide > img.hidden

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.

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.

URL	Transfer Size	Duration
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	43.5 KiB	449 ms
www.allbirds.com/cdn/shop/t/4054/assets/cart-drawer-section.css	2.2 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.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Estimated savings: 322 ms

URL	Time Spent
allbirds.com/	322 ms
www.allbirds.com/	0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

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.

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.

Estimated savings: 120 ms 951.2 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ	181.0 KiB	73.0 KiB
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/m...	116.1 KiB	68.5 KiB
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6411	167.9 KiB	67.5 KiB
shopify-extension.getredo.com/9663-5e405327.js	78.8 KiB	67.1 KiB
shopify-extension.getredo.com/998-62322427.js	101.4 KiB	66.5 KiB
www.googletagmanager.com/gtag/js?id=AW-736740096&cx=c&gtm=4e6411	143.2 KiB	63.7 KiB
www.googletagmanager.com/gtag/js?id=AW-786649265&cx=c&gtm=4e6411	143.3 KiB	63.5 KiB
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js	119.7 KiB	62.7 KiB
www.googletagmanager.com/gtag/js?id=AW-935878905&cx=c&gtm=4e6411	143.7 KiB	62.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-WWZFMZRX	153.7 KiB	60.9 KiB
/main.js?widget_id=l3cmm7m70dmwcb2&shop=weareallbirds.mys...	106.7 KiB	58.4 KiB
superfiliate-cdn.com/storefront.js?shop=weareallbirds.myshopify.com	80.2 KiB	53.7 KiB
shopify-extension.getredo.com/3831-91a24011.js	48.6 KiB	34.7 KiB
shopify-extension.getredo.com/5987-3b5b3f62.js	43.0 KiB	27.4 KiB
www.allbirds.com/cdn/shop/t/4054/assets/theme2.js	33.3 KiB	26.1 KiB
www.allbirds.com/cdn/wpm/bcfa8229ew36b6053dp1e134caame9d83f21m.js	56.8 KiB	25.1 KiB
www.allbirds.com/cdn/shop/t/4054/assets/vue.esm-bundler.js	60.7 KiB	23.5 KiB
www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js	64.2 KiB	23.4 KiB
/assets/chat-sdk/vendor-node_modules_reduxjs_toolkit_dist...	46.9 KiB	22.9 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.

URL	Total CPU Time	Script Evaluation	Script Parse
www.allbirds.com/cdn/shop/t/4054/assets/ScrollTrigger.js	1.1 s	272 ms	0.4 ms
www.allbirds.com/	870 ms	84 ms	15 ms
Unattributable	829 ms	61 ms	0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ	385 ms	350 ms	29 ms
www.allbirds.com/cdn/shop/t/4054/assets/header.js	319 ms	236 ms	0.1 ms
/app/weareallbirds.myshopify.com/govx.js?shop=weareallbir...	296 ms	295 ms	0.8 ms
/w37htfhcq2/vendor/f0ff0959-79f9-4c1e-a197-0361a8f1cbb2/m...	246 ms	163 ms	25 ms
cdn.trackjs.com/agent/v3/latest/t.js	241 ms	180 ms	2.4 ms
shopify-extension.getredo.com/998-62322427.js	194 ms	178 ms	16 ms
www.allbirds.com/cdn/wpm/bcfa8229ew36b6053dp1e134caame9d83f21m.js	178 ms	154 ms	9.3 ms
/main.js?widget_id=l3cmm7m70dmwcb2&shop=weareallbirds.mys...	154 ms	135 ms	17 ms
cdn.gladly.com/assets/chat-sdk/apiBootstrap~3d2f3ae3ce0b8979.js	143 ms	111 ms	13 ms
www.googletagmanager.com/gtag/js?id=AW-935878905&cx=c&gtm=4e6411	133 ms	111 ms	20 ms
shopify-extension.getredo.com/5987-3b5b3f62.js	127 ms	120 ms	6.3 ms
cdn.cookielaw.org/scripttemplates/202506.1.0/otBannerSdk.js	124 ms	85 ms	20 ms
www.googletagmanager.com/gtag/js?id=AW-786649265&cx=c&gtm=4e6411	110 ms	93 ms	16 ms
www.googletagmanager.com/gtag/js?id=AW-736740096&cx=c&gtm=4e6411	105 ms	85 ms	20 ms
www.googletagmanager.com/gtm.js?id=GTM-WWZFMZRX	102 ms	79 ms	22 ms
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6411	102 ms	80 ms	21 ms
/script/ae590735d7ef6a7650efad9ec16ba3a4.experiment.js?in...	93 ms	68 ms	7.4 ms
jssdk.allbirds.com/v3/modern/rsa.min.js	92 ms	84 ms	4.9 ms
www.allbirds.com/cdn/shop/t/4054/assets/global-banner.js	90 ms	64 ms	0.1 ms
www.allbirds.com/cdn/shop/t/4054/assets/autoplay.js	86 ms	86 ms	0.0 ms
beacon.riskified.com/?shop=weareallbirds.myshopify.com	85 ms	78 ms	2.5 ms
www.allbirds.com/cdn/shop/t/4054/assets/standard-product-carousel.js	84 ms	66 ms	0.1 ms
shopify-extension.getredo.com/3831-91a24011.js	82 ms	75 ms	6.7 ms
www.allbirds.com/cdn/shop/t/4054/assets/category-row.js	71 ms	39 ms	0.1 ms
www.allbirds.com/cdn/shop/t/4054/assets/swiper-core.js	62 ms	6.2 ms	1.9 ms
www.allbirds.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js	55 ms	48 ms	3.7 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

Category	Time Spent
Script Evaluation	4.0 s
Other	1.6 s
Style & Layout	746 ms
Script Parsing & Compilation	397 ms
Rendering	245 ms
Parse HTML & CSS	221 ms
Garbage Collection	75 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.

Estimated savings: 0.0 ms 19.2 KiB

URL	Transfer Size	Est Savings
	21.8 KiB	19.2 KiB

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

URL	Transfer Size
/cdn/shop/files/26Q1_DasherNZ_Site_Homepage_Hero_Desktop_...	535.0 KiB
/cdn/shop/files/26Q1_VarsityAiry_Site_Homepage_Hero_Deskt...	504.3 KiB
/cdn/shopifycloud/checkout-web/assets/c1/hooks-useHasOrde...	344.7 KiB
/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	301.2 KiB
/cdn/shop/files/SS26_CH2_Varsity__Site_3xPromo-01_Desktop...	245.5 KiB
/cdn/shop/files/26Q1_VarsityAiry_Site_Homepage_Hero_Mobil...	241.1 KiB
/cdn/shop/files/26Q1_VarsityAiry_Site_3xPromo-01_Desktop-...	225.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-TH8KRSBJ	181.3 KiB
/cdn/shop/files/26Q1_VarsityAiry_HowToStyle-01_Desktop-Mo...	180.2 KiB
www.googletagmanager.com/gtag/destination?id=G-KB1068K0E6&cx=c&gtm=4e6411	168.0 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 26 user timings

●Avoid long main-thread tasks 18 long tasks 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 130 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 15 layout shifts found

○INP breakdown

○Avoid non-composited animations

100

Accessibility

○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

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

●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

○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

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

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

Source	Description
cdn.cookielaw.org/consent/undefined/OtAutoBlock.js	`Failed to load resource: the server responded with a status of 404 ()`

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No 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

SEO

Content Best Practices

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

Link destination	Link Text
www.allbirds.co.uk/policies/privacy-policy	More 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`

Results for https://allbirds.com

Site Health

Top Priorities (5)

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Best Practices

General

SEO

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Best Practices

General

SEO

Content Best Practices

Keyboard Shortcuts