Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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.

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.

Request	Cache TTL	Transfer Size
/ESWWebEnglishUSGuest1712823616920/assets/styles/salesfor...	30.0 s	101.8 KiB
www.nike.com/_next/static/chunks/pages/_app-f797dd5599489427.js	148.0 s	103.2 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	95.0 KiB
/static/cssf/async-chat/_reco/public/0237b8daa38595b79c21...	544.0 s	88.7 KiB
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	517.0 s	81.4 KiB
/static/bellotti/playcard/_reco/public/c636b1d17225aef30e...	783.0 s	76.7 KiB
www.nike.com/_next/static/chunks/864-cc18bd878ad21017.js	412.0 s	72.0 KiB
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	537.0 s	71.4 KiB
www.nike.com/static/analytics-client/public/2704.chunk.085c37.js	476.0 s	68.0 KiB
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...	208.0 s	58.7 KiB
/static/dotcom-privacy/mfe-privacy-consent/_reco/public/0...	669.0 s	59.8 KiB
www.nike.com/static/uxf/web-shell-client/3.0.0/329.chunk.4ef61d.js	621.0 s	59.3 KiB
www.nike.com/_next/static/chunks/pages/%5B%5B...page%5D%5D-10897fc6509bc163.js	413.0 s	53.3 KiB
/static/uxf/nike-ai-search/_reco/public/13d87060db0279667...	781.0 s	54.0 KiB
web-sdk-cdn.singular.net/singular-sdk/latest/singular-sdk.js	0.0 ms	48.4 KiB
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	545.0 s	41.6 KiB
/signals/config/753367016113185?v=2.9.291&r=stable&domain...	1200.0 s	37.2 KiB
www.nike.com/_next/static/chunks/main-a7f01d63ac8a31ce.js	860.0 s	36.5 KiB
/static/uxf/error-modal/_reco/public/2d4f2410b5481d5c079a...	371.0 s	33.3 KiB
www.nike.com/static/ncss/5.0/dotcom/fonts/HelveticaNowText.woff2	32526.0 s	47.7 KiB
/ESWWebEnglishUSGuest1712823616920/assets/js/bootstrap.mi...	8.0 s	26.6 KiB
www.nike.com/static/ncss/5.0/dotcom/fonts/HelveticaNowDisplayMedium.woff2	68059.0 s	59.7 KiB
www.nike.com/static/analytics-client/public/analytics-client.min.js	476.0 s	27.9 KiB
www.nike.com/static/ncss/5.0/dotcom/fonts/HelveticaNowTextMedium.woff2	70330.0 s	50.5 KiB
www.nike.com/static/experience/shop-components/public/7908.chunk.4597bc.js	774.0 s	23.2 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
www.nike.com/static/ncss/5.0/dotcom/desktop/css/ncss.en-us.min.css	531.0 s	17.5 KiB
www.nike.com/static/privacy-core/public/privacy-core.js	478.0 s	16.1 KiB
www.nike.com/static/ncss/5.0/dotcom/fonts/Nike-Futura-ot-300.woff2	42403.0 s	29.1 KiB
www.nike.com/_next/static/chunks/429.47d25507f1b6d259.js	823.0 s	13.9 KiB
www.nike.com/_next/static/chunks/77d14ff971946677.css	410.0 s	13.1 KiB
/static/experience/shop-components/public/bootstrap-nike-...	203.0 s	12.5 KiB
www.nike.com/static/ncss/5.0/dotcom/fonts/Nike-Futura.woff2	58593.0 s	24.9 KiB
js.adsrvr.org/up_loader.1.1.0.js	0.0 ms	11.2 KiB
www.nike.com/assets/measure/data-capture/mc.js	837.0 s	12.1 KiB
www.nike.com/static/uxf/web-shell-client/v1/bundle.umd.js	180.0 s	9.7 KiB
c.amazon-adsystem.com/aat/amzn.js	0.0 ms	8.9 KiB
www.nike.com/static/analytics-client/public/config.chunk.0a0e99.js	476.0 s	9.4 KiB
/static/experience/shop-components/public/npm.tanstack-4c...	662.0 s	8.5 KiB
www.nike.com/_next/static/chunks/739.e084fb5e3f935e6a.js	102.0 s	7.8 KiB
www.nike.com/static/analytics-client/public/web.chunk.45e491.js	477.0 s	6.5 KiB
/static/experience/shop-components/public/npm.nike-3ce1ee...	87.0 s	6.1 KiB
/static/experience/shop-components/public/npm.nike-bda120...	216.0 s	6.1 KiB
www.nike.com/static/experience/shop-components/public/nike-shop-client.js	439.0 s	6.2 KiB
s.go-mpulse.net/boomerang/MG9H6-WWTWX-BY4DC-TR8KC-XUZD2	604800.0 s	56.8 KiB
www.nike.com/static/experience/shop-components/public/npm.qs.chunk.07f911.js	846.0 s	6.0 KiB
/static/experience/shop-components/public/npm.nike-4ebea4...	208.0 s	5.3 KiB
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	543.0 s	5.5 KiB
/static/experience/shop-components/public/npm.react-redux...	480.0 s	4.2 KiB
www.nike.com/static/analytics-client/public/9994.chunk.75318f.js	772.0 s	4.3 KiB
cdn.singular.net/dashboard/banners/29beaa59fc1cb4d7195c8ed1c8fc957f4b2b69ab	0.0 ms	3.5 KiB
s.go-mpulse.net/boomerang/AERUL-JUD3H-8RUDQ-SABVF-2UCEG?20200601	604800.0 s	34.5 KiB
www.nike.com/_next/static/chunks/webpack-6d004e902da5d68f.js	416.0 s	3.6 KiB
www.nike.com/_next/static/chunks/895.6b5ddb639024711b.js	823.0 s	3.5 KiB
/ESWWebEnglishUSGuest1712823616920/assets/styles/bootstra...	6.0 s	3.0 KiB
s.pinimg.com/ct/lib/main.34af66ec.js	1209600.0 s	27.6 KiB
/ESWWebEnglishUSGuest1712823616920/assets/js/inert.min.js	38.0 s	2.5 KiB
www.nike.com/_next/static/chunks/43b4c57a22e14da7.css	602.0 s	2.3 KiB
s.c8.io/px/pixel.min.js	0.0 ms	2.0 KiB
s.pinimg.com/ct/core.js	7200.0 s	2.1 KiB
ct.pinterest.com/static/ct/token_create.js	7200.0 s	2.0 KiB
www.nike.com/_next/static/chunks/b3aab82c37498ef3.css	772.0 s	1.5 KiB
www.nike.com/_next/static/chunks/framework-f3e79eb3607634e0.js	728.0 s	1.5 KiB
www.nike.com/assets/ncss/glyphs/2.6/css/glyphs.min.css	876.0 s	1.5 KiB
www.nike.com/_next/static/-JbSRiqxfjwd_7kWl3UqV/_buildManifest.js	89.0 s	1.3 KiB
/ESWWebEnglishUSGuest1712823616920/assets/js/sitecontext....	16.0 s	1.3 KiB
www.nike.com/_next/static/-JbSRiqxfjwd_7kWl3UqV/_ssgManifest.js	88.0 s	1.0 KiB
/static/experience/experimentation-eng/gridiron/no-consen...	805.0 s	1.1 KiB
js.adsrvr.org/universal_pixel.js	0.0 ms	958 B
cdn.singular.net/dashboard/banners/3158d57078183118aca507940ac0d83014fae375	0.0 ms	845 B
/rp.gif?ts=1775320074153&id=t2_1rfhkf4r&event=PageVisit&m...	0.0 ms	637 B
/ESWWebEnglishUSGuest1712823616920/assets/styles/embedded...	32.0 s	551 B
/config/com/33a360ef-51f9-46b3-93f1-3859a357fd3f.js?v=3.5...	0.0 ms	487 B
/tr/?id=753367016113185&ev=PageView&dl=https%3A%2F%2Fwww....	0.0 ms	271 B

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:277.163 label:Time to first byte subpart:timeToFirstByte] map[duration:4006.553 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-VIDEO

nodeLabel: Looping video with no sound

path: 1,HTML,1,BODY,14,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,VIDEO

selector: div.l01-Jx1P > div.rvp-video-root > div#vjs_video_3 > video#vjs_video_3_html5_api

snippet: <video playsinline="playsinline" class="vjs-tech" aria-label="Looping video with no sound" id="vjs_video_3_html5_api" tabindex="-1" preload="auto" muted="muted" src="blob:https://www.nike.com/75f102ad-768e-403b-a5d3-4925fd52d7e5">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

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

value: No additional origins are good candidates for preconnecting

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.

URL	Transfer Size	Duration
static-assets.nike.com/video-player/2.2.0/nike-one-video-player.min.js	191.1 KiB	2.1 s
www.nike.com/assets/vendor/react-dom/18.3.1/react-dom.production.min.js	42.7 KiB	453 ms
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	81.4 KiB	755 ms
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...	58.7 KiB	755 ms
www.nike.com/assets/vendor/@emotion/styled-base/10.3.0/styled-base.umd.min.js	5.2 KiB	151 ms
www.nike.com/assets/vendor/@emotion/styled/10.3.0/styled.umd.min.js	5.5 KiB
www.nike.com/assets/vendor/@emotion/core/10.3.1/core.umd.min.js	7.2 KiB	151 ms
www.nike.com/assets/vendor/react/18.3.1/react.production.min.js	4.9 KiB
static-assets.nike.com/video-player/2.2.0/nike-one-video-player.min.css	16.6 KiB	906 ms
/static/experience/experimentation-eng/gridiron/no-consen...	1.1 KiB
www.nike.com/static/uxf/web-shell-client/v1/bundle.umd.js	9.7 KiB	151 ms
www.nike.com/static/analytics-client/public/analytics-client.min.js	27.9 KiB	302 ms
www.nike.com/static/privacy-core/public/privacy-core.js	16.1 KiB	151 ms
www.nike.com/static/ncss/5.0/dotcom/desktop/css/ncss.en-us.min.css	17.5 KiB	302 ms
www.nike.com/assets/ncss/glyphs/2.6/css/glyphs.min.css	1.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
www.nike.com/static/ncss/5.0/dotcom/fonts/HelveticaNowDisplayMedium.woff2	20 ms
www.nike.com/static/ncss/5.0/dotcom/fonts/HelveticaNowTextMedium.woff2	15 ms
www.nike.com/static/ncss/5.0/dotcom/fonts/HelveticaNowText.woff2	15 ms
www.nike.com/static/ncss/5.0/dotcom/fonts/Nike-Futura-ot-300.woff2	15 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/5c2125fc-5e2d-43f5-a4a5-d89cc18c1...	61.6 KiB	59.0 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/89d11aab-43e6-45d5-9c27-64ed74ea7...	48.8 KiB	46.2 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/9fee9ae4-b37d-4548-9d46-53b941169...	35.6 KiB	33.0 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/cc519c1f-fb07-4e52-b58a-fd94c8c9e...	32.4 KiB	29.8 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/77b9afd9-3266-4a81-bf0a-5ac2197ca...	31.6 KiB	29.0 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/5e4a52b4-7df3-4e71-9b0c-df8c5aed3...	31.3 KiB	28.7 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/6766dc89-8127-4d60-abe3-0086088f0...	29.7 KiB	27.1 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/1646730d-96cb-4186-a6a5-9959a77c8...	29.1 KiB	26.5 KiB
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/9eff6436-f802-4b77-b161-2b8e1b51a...	28.0 KiB	25.4 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.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 40.7 KiB

URL	Transfer Size	Est Savings
static-assets.nike.com/video-player/2.2.0/nike-one-video-player.min.css	16.2 KiB	15.8 KiB
www.nike.com/static/ncss/5.0/dotcom/desktop/css/ncss.en-us.min.css	16.7 KiB	13.9 KiB
www.nike.com/_next/static/chunks/77d14ff971946677.css	12.3 KiB	11.0 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.3 s 922.2 KiB

URL	Transfer Size	Est Savings
static-assets.nike.com/video-player/2.2.0/nike-one-video-player.min.js	188.5 KiB	84.5 KiB
/gtag/js?id=G-QTVTHYLBQS&l=marketingClientDataLayer&cx=c&...	168.9 KiB	63.9 KiB
/gtag/destination?id=AW-1019013699&l=marketingClientDataL...	143.8 KiB	60.4 KiB
www.googletagmanager.com/gtag/js?id=DC-4171764&l=marketingClientDataLayer	129.3 KiB	60.3 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js	105.2 KiB	60.1 KiB
/gtag/js?id=DC-8128335&l=marketingClientDataLayer&cx=c&gt...	127.9 KiB	58.5 KiB
/gtag/destination?id=AW-947143981&l=marketingClientDataLa...	132.4 KiB	57.3 KiB
/static/bellotti/playcard/_reco/public/c636b1d17225aef30e...	75.9 KiB	55.8 KiB
/static/cssf/async-chat/_reco/public/0237b8daa38595b79c21...	87.7 KiB	54.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-NTF2X45&l=marketingClientDataLayer	179.1 KiB	51.2 KiB
www.nike.com/static/uxf/web-shell-client/3.0.0/329.chunk.4ef61d.js	58.6 KiB	49.2 KiB
www.nike.com/_next/static/chunks/pages/_app-f797dd5599489427.js	102.2 KiB	48.6 KiB
s.go-mpulse.net/boomerang/MG9H6-WWTWX-BY4DC-TR8KC-XUZD2	56.7 KiB	36.9 KiB
connect.facebook.net/en_US/fbevents.js	94.8 KiB	36.6 KiB
/static/uxf/nike-ai-search/_reco/public/13d87060db0279667...	53.3 KiB	36.2 KiB
/static/dotcom-privacy/mfe-privacy-consent/_reco/public/0...	59.0 KiB	33.0 KiB
www.nike.com/_next/static/chunks/864-cc18bd878ad21017.js	71.0 KiB	29.3 KiB
/static/uxf/error-modal/_reco/public/2d4f2410b5481d5c079a...	32.6 KiB	23.9 KiB
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	80.4 KiB	22.6 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.

URL	Total CPU Time	Script Evaluation	Script Parse
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...	4.5 s	4.2 s	64 ms
www.nike.com/assets/vendor/react/18.3.1/react.production.min.js	4.1 s	3.6 s	1.6 ms
Unattributable	3.7 s	569 ms	0.9 ms
www.nike.com/	3.5 s	1.3 s	97 ms
static-assets.nike.com/video-player/2.2.0/nike-one-video-player.min.js	1.3 s	404 ms	100 ms
www.googletagmanager.com/gtm.js?id=GTM-NTF2X45&l=marketingClientDataLayer	1.2 s	1.0 s	95 ms
www.nike.com/_next/static/chunks/739.e084fb5e3f935e6a.js	996 ms	225 ms	3.6 ms
www.nike.com/static/analytics-client/public/2704.chunk.085c37.js	821 ms	723 ms	46 ms
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...	735 ms	437 ms	18 ms
/gtag/js?id=G-QTVTHYLBQS&l=marketingClientDataLayer&cx=c&...	556 ms	468 ms	68 ms
js-agent.newrelic.com/nr-spa-1.312.1.min.js	518 ms	406 ms	13 ms
/gtag/destination?id=AW-1019013699&l=marketingClientDataL...	342 ms	281 ms	57 ms
www.nike.com/assets/vendor/react-dom/18.3.1/react-dom.production.min.js	326 ms	284 ms	17 ms
/gtag/destination?id=AW-947143981&l=marketingClientDataLa...	320 ms	263 ms	52 ms
/static/cssf/async-chat/_reco/public/0237b8daa38595b79c21...	301 ms	246 ms	45 ms
/gtag/js?id=DC-8128335&l=marketingClientDataLayer&cx=c&gt...	299 ms	247 ms	50 ms
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	279 ms	232 ms	47 ms
connect.facebook.net/en_US/fbevents.js	243 ms	172 ms	69 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js	236 ms	176 ms	57 ms
www.nike.com/_next/static/chunks/pages/%5B%5B...page%5D%5D-10897fc6509bc163.js	219 ms	196 ms	21 ms
www.nike.com/_next/static/chunks/pages/_app-f797dd5599489427.js	196 ms	152 ms	41 ms
www.nike.com/static/experience/shop-components/public/npm.buffer.chunk.3e7506.js	179 ms	172 ms	2.7 ms
/static/bellotti/playcard/_reco/public/c636b1d17225aef30e...	171 ms	132 ms	34 ms
bat.bing.com/bat.js	153 ms	145 ms	6.8 ms
www.nike.com/static/analytics-client/public/analytics-client.min.js	152 ms	132 ms	20 ms
sc-static.net/scevent.min.js	152 ms	138 ms	7.9 ms
www.nike.com/assets/measure/data-capture/mc.js	148 ms	125 ms	14 ms
www.nike.com/_next/static/chunks/895.6b5ddb639024711b.js	135 ms	112 ms	1.3 ms
www.googletagmanager.com/gtag/js?id=DC-4171764&l=marketingClientDataLayer	132 ms	85 ms	44 ms
www.nike.com/static/uxf/web-shell-client/3.0.0/329.chunk.4ef61d.js	131 ms	97 ms	33 ms
web-sdk-cdn.singular.net/singular-sdk/latest/singular-sdk.js	117 ms	94 ms	22 ms
s.pinimg.com/ct/lib/main.34af66ec.js	113 ms	87 ms	14 ms
/signals/config/753367016113185?v=2.9.291&r=stable&domain...	107 ms	85 ms	21 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js	103 ms	69 ms	33 ms
www.nike.com/static/privacy-core/public/privacy-core.js	94 ms	83 ms	7.9 ms
/static/uxf/dotcom-nav-v3/packages/header-footer-renderer...	90 ms	72 ms	18 ms
/static/dotcom-privacy/mfe-privacy-consent/_reco/public/0...	88 ms	62 ms	26 ms
/static/uxf/nike-ai-search/_reco/public/13d87060db0279667...	85 ms	57 ms	28 ms
s.go-mpulse.net/boomerang/MG9H6-WWTWX-BY4DC-TR8KC-XUZD2	84 ms	52 ms	28 ms
www.nike.com/_next/static/chunks/main-a7f01d63ac8a31ce.js	75 ms	58 ms	16 ms
www.redditstatic.com/ads/pixel.js	69 ms	48 ms	14 ms
www.nike.com/static/experience/shop-components/public/2624.chunk.23a643.js	61 ms	55 ms	4.7 ms
s.go-mpulse.net/boomerang/AERUL-JUD3H-8RUDQ-SABVF-2UCEG?20200601	58 ms	39 ms	18 ms
www.nike.com/static/analytics-client/public/8606.chunk.754e80.js	57 ms	47 ms	9.3 ms
/consumersignals/gtm/v1/container/_/service_worker/63b0/s...	56 ms	48 ms	4.0 ms
www.nike.com/_next/static/chunks/864-cc18bd878ad21017.js	52 ms	12 ms	38 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.

Category	Time Spent
Script Evaluation	18.0 s
Other	5.4 s
Script Parsing & Compilation	1.6 s
Style & Layout	1.6 s
Rendering	607 ms
Garbage Collection	519 ms
Parse HTML & CSS	302 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in a sub frame.	Actionable

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.

URL	Transfer Size
/video/32216fb34f6580c0/32216fb34f6580c0video_1_000000003...	5.0 MiB
/video/32216fb34f6580c0/32216fb34f6580c0video_1_000000004...	3.2 MiB
/video/32216fb34f6580c0/32216fb34f6580c0video_1_000000005...	2.4 MiB
/video/32216fb34f6580c0/32216fb34f6580c0video_3_000000002...	1.3 MiB
/video/32216fb34f6580c0/32216fb34f6580c0video_3_000000001...	1.0 MiB
/ESWWebEnglishUSGuest1712823616920/webruntime/view/49c4a2...	393.3 KiB
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...	268.4 KiB
static-assets.nike.com/video-player/2.2.0/nike-one-video-player.min.js	191.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-NTF2X45&l=marketingClientDataLayer	179.4 KiB
/gtag/js?id=G-QTVTHYLBQS&l=marketingClientDataLayer&cx=c&...	168.9 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/1646730d-96cb-4186-a6a5-9959a77c8...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/9eff6436-f802-4b77-b161-2b8e1b51a...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/cc519c1f-fb07-4e52-b58a-fd94c8c9e...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/5c2125fc-5e2d-43f5-a4a5-d89cc18c1...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/6766dc89-8127-4d60-abe3-0086088f0...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/9fee9ae4-b37d-4548-9d46-53b941169...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/5e4a52b4-7df3-4e71-9b0c-df8c5aed3...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/77b9afd9-3266-4a81-bf0a-5ac2197ca...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/89d11aab-43e6-45d5-9c27-64ed74ea7...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/983de953-a677-4fe6-bbca-0edc4c5e0...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/2538caab-6c51-4c37-9ef7-c19cd6fdd...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/3ae386c7-a1b2-4fa7-a334-c4ec3fc8a...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/f654108e-e3cc-42bc-a4c3-272c2f2eb...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/086aa99b-a7a8-432f-a8b0-9b2f4c1b7...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/49ce29f3-aa43-45f9-a8f2-34299d2e5...
div.PJwtGh2V > div.FaNuH3kT > a > img `div.PJwtGh2V > div.FaNuH3kT > a > img`	/a/images/w_144,c_limit/9b3a504b-ff4c-441f-8366-b0c3f76f5...
ul.footer-list > li > a.nav-css-1isz5ne > img `ul.footer-list > li > a.nav-css-1isz5ne > img`	/a/images/w_960,c_limit/3732c58b-d0ad-4c3c-898c-c4b901933...
body.nav-scrollable > div#singular-banner > img.singular-banner-background-image `body.nav-scrollable > div#singular-banner > img.singular-banner-background-image`

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Forced reflow

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 29 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 6 animated elements found

●Network Requests

●Network Round Trip Times 130 ms

●Server Backend Latencies 330 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 270 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○LCP request discovery

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Guides `li > div.nav-css-s8yvqs > details.nav-css-1qehhq > summary.drop-down-accessibility-button`

Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. Learn more about prohibited ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Nike AI `body.nav-scrollable > div#footer-wrapper > div#gen-nav-footer > div.nav-css-1sf9wd7`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Only in the Nike App `body.nav-scrollable > div#singular-banner > div.singular-banner-content > span.singular-banner-title`
Get exclusive access, member rewards, and more. `body.nav-scrollable > div#singular-banner > div.singular-banner-content > span.singular-banner-subtitle`
OPEN `body.nav-scrollable > div#singular-banner > div.singular-banner-download-button`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
TEE IT HIGH. LET IT FLY. `figure.image-card > figcaption._13xDDA0A > div._3T7SP3hk > h3#a11y_react-aria-:R8u5pl6:-title`
Featured `div#d5d48201-75f8-4fa5-942d-6c05ed94265b > div#123e7f31-636e-4819-a8a4-60d9346d30de > div.merchMenuWrapper > h4.merch-menu-heading`

These are opportunities to improve keyboard navigation in your application.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.nav-scrollable > div#singular-banner > img.singular-banner-background-image `body.nav-scrollable > div#singular-banner > img.singular-banner-background-image`
body.nav-scrollable > div#singular-banner > img.singular-banner-logo `body.nav-scrollable > div#singular-banner > img.singular-banner-logo`

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

Best practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Current slide, Go to slide 3 of 3 `div#1a73c582-b70e-4103-8c9d-775a302e49fd > div#carousel-a9424745-c262-43cb-8c2a-97dddf494c77 > div.S2QRw7W4 > button.TYczRBi0`

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
See All `div > div._3PJUZAN0 > div.Yjk73vve > button.nds-btn`

○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

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●`button`, `link`, and `menuitem` elements have accessible names

●ARIA attributes are used as specified for the element's role

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●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

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●ARIA IDs are unique

●All heading elements contain content.

●Uses ARIA roles only on compatible elements

●Identical links have the same purpose.

○`[accesskey]` values are unique

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○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

○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

○Form elements have associated labels

○Links are distinguishable without relying on color.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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>`.

○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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	line 2, col 31
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	line 2, col 31
Fledge	line 2, col 31
AttributionReporting	www.nike.com/ line 1, col 45337
Unload event listeners are deprecated and will be removed.	s.go-mpulse.net/boomerang/MG9H6-WWTWX-BY4DC-TR8KC-XUZD2 line 9, col 11504

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.

Source	Description
www.nike.com/ line 1, col 9631	`[NikeAI] users accessToken is not detected`
www.nike.com/ line 1, col 9631	`[NikeAI] users profile is not detected`
www.nike.com/	`Attestation check for Shared Storage on https://ara.paa-reporting-advertising.amazon failed.`
api.nike.com/buy/carts/v2/US/NIKE/NIKECOM	`Failed to load resource: the server responded with a status of 404 ()`
api.nike.com/buy/carts/v2/US/NIKE/NIKECOM	`Failed to load resource: the server responded with a status of 404 ()`
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...	`Failed to load resource: the server responded with a status of 429 ()`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

●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

○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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.nike.com/membership	Learn more

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.nav-scrollable > div#singular-banner > img.singular-banner-background-image `body.nav-scrollable > div#singular-banner > img.singular-banner-background-image`
body.nav-scrollable > div#singular-banner > img.singular-banner-logo `body.nav-scrollable > div#singular-banner > img.singular-banner-logo`

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

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`