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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

19

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
/digital/AdobeTarget/Paint_The_House/Web/26-02-2026/SOTD_...0.0 ms2.0 MiB
/digital/AdobeTarget/Paint_The_House/Web/26-02-2026/SOTD_...0.0 ms1.9 MiB
www.subway.com/dist/RemoteOrder/js/app.js?v=6.22.1771200.0 s340.9 KiB
/dist/RemoteOrder/js/components/customizer/index.14f2e228...1200.0 s333.6 KiB
assets.adobedtm.com/041a2403188d/9c33e01fd853/launch-c29f9a12ff43.min.js3600.0 s262.0 KiB
www.subway.com/dist/RemoteOrder/css/app-ltr.css?v=6.22.1771200.0 s124.1 KiB
www.subway.com/klyminKDzLp_AdLIplZ0/m3cONpw2zamSkX/WWdFNA/P2IQ/VBhmIG0B21600.0 s167.8 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansLCG-Bold.woff1200.0 s117.4 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansLCG-Medium.woff1200.0 s116.8 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansLCG-Regular.woff1200.0 s113.1 KiB
cdn.quantummetric.com/qscripts/quantum-subway.js300.0 s101.4 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansCond-Bold.woff1200.0 s87.2 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansCond-Medium.woff1200.0 s85.9 KiB
js-cdn.dynatrace.com/jstag/15c157a40ab/bf69157qdp/66653261b3f39eb6_complete.js3600.0 s78.6 KiB
cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js86400.0 s127.0 KiB
www.subway.com/dist/RemoteOrder/webfonts/SubwaySans-Bold-Cy-Gr-Web.woff21200.0 s54.4 KiB
www.subway.com/dist/RemoteOrder/webfonts/SubwaySans-Medium-Cy-Gr-Web.woff21200.0 s53.5 KiB
www.subway.com/dist/RemoteOrder/webfonts/SubwaySans-Regular-Cy-Gr-Web.woff21200.0 s49.0 KiB
www.subway.com/dist/RemoteOrder/js/main.js?v=6.22.1771200.0 s40.7 KiB
www.subway.com/dist/RemoteOrder/webfonts/SubwaySansCond-Medium-Web.woff21200.0 s36.2 KiB
www.subway.com/dist/RemoteOrder/css/main.css?v=6.22.1771200.0 s26.2 KiB
cdn.branch.io/branch-latest.min.js300.0 s23.5 KiB
www.subway.com/klyminKDzLp_AdLIplZ0/Vb/fnk3NA/cwI0/aiQoKDAq86400.0 s28.5 KiB
www.subway.com/dist/RemoteOrder/js/kount-web-client-sdk-bundle.js1200.0 s7.4 KiB
www.subway.com/akam/13/e64ab1821600.0 s9.4 KiB
www.subway.com/dist/RemoteOrder/js/launchdarkly.js?6.22.1771200.0 s4.5 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js?v=20230814-286400.0 s9.1 KiB
/logos/7d120555-065a-4ef8-b127-16aa186c5df2/dfb9fe2f-c0dd...86400.0 s4.7 KiB
www.subway.com/Assets/RemoteOrder/img/05-ui-icon-pickup@3x.png1200.0 s1.4 KiB
www.subway.com/dist/RemoteOrder/css/asset/icons/close.svg1200.0 s1.2 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.5 KiB
/_r?sdk=web2.87.1&branch_key=key_live_plIfO7seKutGupcrCCB...0.0 ms665 B
www.subway.com/Assets/RemoteOrder/img/close@3x.png1200.0 s745 B
www.subway.com/Assets/RemoteOrder/img/close@2x.png1200.0 s642 B
www.subway.com/Assets/RemoteOrder/img/share.png1200.0 s634 B
www.subway.com/Assets/RemoteOrder/img/BestSellerIcon.svg1200.0 s617 B
/041a2403188d/9c33e01fd853/a3a94b4f01f9/RCb5c751071ada4c8...3600.0 s620 B
/041a2403188d/9c33e01fd853/a3a94b4f01f9/RCef874f7a016240b...3600.0 s565 B
www.subway.com/Assets/RemoteOrder/img/close.png1200.0 s456 B
www.subway.com/klyminKDzLp_AdLIplZ0/Vb/fnk3NA/Pz8b/XQNpXzZY86400.0 s998 B
www.subway.com/dist/RemoteOrder/css/asset/icons/navbarIconLine.svg1200.0 s438 B
www.subway.com/dist/RemoteOrder/css/asset/icons/close-icon.svg1200.0 s434 B
www.subway.com/dist/RemoteOrder/css/font.css?v=6.22.1771200.0 s416 B
cdn.cookielaw.org/logos/static/ot_close.svg86400.0 s626 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.181514] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.045926 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]] map[cause:Web font extra:map[type:url value:https://www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansCond-Bold.woff]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.035237 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:147 height:71 left:0 right:412 top:76 width:412] lhId:page-1-NAV nodeLabel:Skip to main content path:2,HTML,1,BODY,25,HEADER,6,HEADER,0,NAV selector:body#stick-to > header.header-sticky > header > nav.navbar snippet:<nav class="navbar cms nav-shadow" style="margin-top: 76px;"> type:node] score:0.03307 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.026277 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.026246 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.052184999999999995] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.006998 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.006723 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.006461 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.006137 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:963 height:823 left:0 right:412 top:140 width:412] lhId:page-3-BODY nodeLabel:body#stick-to path:2,HTML,1,BODY selector:body#stick-to snippet:<body id="stick-to" class="isLoggedOut cms branch-banner-is-active" style="margin-top: 140px; transition: 0.375s;"> type:node] score:0.005346 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2989 height:372 left:20 right:392 top:2617 width:372] lhId:page-8-IMG nodeLabel:Subway catering box with an unwrapped sub, chips and cookie nearby. path:2,HTML,1,BODY,28,MAIN,11,DIV,1,SECTION,1,DIV,0,PICTURE,1,IMG selector:section#id_50_50_7d412 > div.component_50_50_image > picture > img snippet:<img src="https://www.subway.com/en-us/-/media/northamerica/usa/shared/2026/2026_505…" format="jpg" alt="Subway catering box with an unwrapped sub, chips and cookie nearby."> type:node]]] type:subitems]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansCond-Bold.woff25 ms
fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff25.0 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:67.937 source:map[type:text value:[unattributed]]]]

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:467.16900024414065 label:Time to first byte subpart:timeToFirstByte] map[duration:2186.5879997558595 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-H2
nodeLabel: $4.99 SUB OF THE DAY
path: 2,HTML,1,BODY,28,MAIN,6,DIV,1,DIV,0,SECTION,6,DIV,4,DIV,0,H2
selector: section.feature-banner > div#feature-banner-mobile-video > div.feature-banner__overlay > h2.feature-banner__title
snippet: <h2 class="feature-banner__title" style="color: rgb(255, 255, 255); font-size: 60px;">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
cdnjs.cloudflare.com/ajax/libs/bodymovin/5.7.4/lottie.min.js54.3 KiB2.2 s
ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js30.9 KiB1.8 s
www.subway.com/dist/RemoteOrder/css/app-ltr.css?v=6.22.177124.1 KiB2.7 s
www.subway.com/dist/RemoteOrder/css/main.css?v=6.22.17726.2 KiB151 ms
/en-us/-/media/global/files/js/media_library.js?v=1;d=07-...785 B
/en-us/-/media/global/files/css/media_library.css?v=18;d=...1.7 KiB
cdn.jsdelivr.net/npm/launchdarkly-js-client-sdk@3.1.3/dist/ldclient.min.js19.6 KiB1.5 s
cdn.cookielaw.org/scripttemplates/otSDKStub.js?v=20230814-29.1 KiB1.1 s
cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.3/moment.min.js11.8 KiB1.3 s
cdnjs.cloudflare.com/ajax/libs/vanilla-lazyload/8.7.1/lazyload.min.js2.4 KiB790 ms
www.subway.com/dist/RemoteOrder/css/font.css?v=6.22.177416 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Subway catering box with an unwrapped sub, chips and cookie nearby. section#id_50_50_7d412 > div.component_50_50_image > picture > img
/en-us/-/media/northamerica/usa/shared/2026/2026_5050_cat...88.4 KiB21.8 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:cb4b209a-17b7-41a0-94c0-fdfe6441236e/re...21.7 KiB9.4 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:5eb41811-0323-4511-8ff1-b878d4a8f39d/re...21.0 KiB8.7 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:4acf2be5-0e2a-48b2-af26-f965cac82cf1/re...20.0 KiB7.7 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:4921f3ec-63b1-4d38-bd5a-64905b10b25d/re...19.0 KiB6.7 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:8e1ac33c-46c2-4d1d-92ae-71a42acbc386/re...18.2 KiB5.9 KiB
"Don't miss the meatier shower" with 2 Protein Pockets section#id_promotion_19e74 > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/hp_promo...18.4 KiB5.5 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:7ba05d17-1942-4ce3-9654-775176be3fe9/re...17.6 KiB5.3 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:bc917c78-9dd0-4234-8e2b-ed14a7f60790/re...17.1 KiB4.8 KiB
Protein Pocket with 20+ G of Protein section#id_promotion_8f583 > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/hp_promo...17.3 KiB4.4 KiB
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:3200b79e-8e4c-40ce-9552-a43868872c17/re...16.5 KiB4.1 KiB

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
/dam/urn:aaid:aem:91ca1652-aac8-4437-8d8f-46705391983d/re...http/1.1
/dam/urn:aaid:aem:7415f31c-f0e9-463c-984b-b45656633775/re...http/1.1
/dam/urn:aaid:aem:b0625dc0-5c4d-4d52-8074-daa35e5a81fc/re...http/1.1
/dam/urn:aaid:aem:6153aa05-8b15-4d08-aa19-239cb2d27df6/re...http/1.1
/dam/urn:aaid:aem:63522e12-d82d-489c-9026-169c9900d94d/re...http/1.1
/digital/AdobeTarget/Paint_The_House/Web/26-02-2026/SOTD_...http/1.1
/digital/AdobeTarget/Paint_The_House/Web/26-02-2026/SOTD_...http/1.1
/dam/urn:aaid:aem:4acf2be5-0e2a-48b2-af26-f965cac82cf1/re...http/1.1
/dam/urn:aaid:aem:af861677-c797-4f16-92cf-3e3b0ea75a1a/re...http/1.1
/dam/urn:aaid:aem:bc917c78-9dd0-4234-8e2b-ed14a7f60790/re...http/1.1
/dam/urn:aaid:aem:1a7cdc7a-0d81-41ad-8819-570faf139bee/re...http/1.1
/dam/urn:aaid:aem:cb4b209a-17b7-41a0-94c0-fdfe6441236e/re...http/1.1
/dam/urn:aaid:aem:c93ec1e1-4b1a-4401-9baf-cb3404d56968/re...http/1.1
/dam/urn:aaid:aem:5eb41811-0323-4511-8ff1-b878d4a8f39d/re...http/1.1
/dam/urn:aaid:aem:3200b79e-8e4c-40ce-9552-a43868872c17/re...http/1.1
/dam/urn:aaid:aem:e9e37739-de39-405b-a95d-71cdf2310f0f/re...http/1.1
/dam/urn:aaid:aem:4921f3ec-63b1-4d38-bd5a-64905b10b25d/re...http/1.1
/dam/urn:aaid:aem:8e1ac33c-46c2-4d1d-92ae-71a42acbc386/re...http/1.1
/dam/urn:aaid:aem:bae5580a-0353-4e8a-98d9-18acf9727742/re...http/1.1
/dam/urn:aaid:aem:7ba05d17-1942-4ce3-9654-775176be3fe9/re...http/1.1

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.6 s
URLTime Spent
subway.com/775 ms
www.subway.com/850 ms
www.subway.com/en-us0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
body#stick-to body#stick-to
0.046
body#stick-to body#stick-to
0.035
Skip to main content body#stick-to > header.header-sticky > header > nav.navbar
0.033
body#stick-to body#stick-to
0.026
body#stick-to body#stick-to
0.026
body#stick-to body#stick-to
0.014
body#stick-to body#stick-to
0.007
body#stick-to body#stick-to
0.007
body#stick-to body#stick-to
0.006
body#stick-to body#stick-to
0.006
body#stick-to body#stick-to
0.005
body#stick-to body#stick-to
0.005
body#stick-to body#stick-to
0.005
body#stick-to body#stick-to
0.004
body#stick-to body#stick-to
0.004

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: 1.1 s 162.4 KiB
URLTransfer SizeEst Savings
www.subway.com/dist/RemoteOrder/css/app-ltr.css?v=6.22.177123.9 KiB120.3 KiB
www.subway.com/dist/RemoteOrder/css/main.css?v=6.22.17726.0 KiB23.1 KiB
21.6 KiB19.0 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: 4.0 s 756.4 KiB
URLTransfer SizeEst Savings
www.subway.com/dist/RemoteOrder/js/app.js?v=6.22.177333.1 KiB210.5 KiB
/dist/RemoteOrder/js/components/customizer/index.14f2e228...333.4 KiB200.1 KiB
assets.adobedtm.com/041a2403188d/9c33e01fd853/launch-c29f9a12ff43.min.js261.8 KiB90.9 KiB
cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js126.9 KiB67.1 KiB
cdnjs.cloudflare.com/ajax/libs/bodymovin/5.7.4/lottie.min.js53.7 KiB47.1 KiB
cdn.quantummetric.com/qscripts/quantum-subway.js100.8 KiB35.6 KiB
www.subway.com/klyminKDzLp_AdLIplZ0/m3cONpw2zamSkX/WWdFNA/P2IQ/VBhmIG0B166.9 KiB34.4 KiB
js-cdn.dynatrace.com/jstag/15c157a40ab/bf69157qdp/66653261b3f39eb6_complete.js78.2 KiB27.7 KiB
ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js29.6 KiB21.6 KiB
ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js32.2 KiB21.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.subway.com/en-us2.3 s96 ms19 ms
Unattributable1.9 s274 ms0.0 ms
www.subway.com/dist/RemoteOrder/js/app.js?v=6.22.1771.4 s1.0 s174 ms
cdn.quantummetric.com/qscripts/quantum-subway.js1.3 s1.1 s33 ms
www.subway.com/klyminKDzLp_AdLIplZ0/m3cONpw2zamSkX/WWdFNA/P2IQ/VBhmIG0B947 ms859 ms66 ms
assets.adobedtm.com/041a2403188d/9c33e01fd853/launch-c29f9a12ff43.min.js859 ms632 ms167 ms
/dist/RemoteOrder/js/components/customizer/index.14f2e228...619 ms423 ms161 ms
cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js385 ms238 ms76 ms
www.subway.com/dist/RemoteOrder/js/main.js?v=6.22.177338 ms136 ms17 ms
js-cdn.dynatrace.com/jstag/15c157a40ab/bf69157qdp/66653261b3f39eb6_complete.js304 ms201 ms25 ms
/_r?sdk=web2.87.1&branch_key=key_live_plIfO7seKutGupcrCCB...224 ms154 ms1.8 ms
www.subway.com/akam/13/e64ab18221 ms199 ms5.6 ms
/extensions/EP31dbb9c60e404ba1aa6e746d49be6f29/AppMeasure...197 ms193 ms0.8 ms
www.subway.com/klyminKDzLp_AdLIplZ0/Vb/fnk3NA/cwI0/aiQoKDAq171 ms113 ms9.3 ms
sdk.apptentive.com/v1/sdk.min.js132 ms107 ms15 ms
ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js114 ms77 ms22 ms
cdn.jsdelivr.net/npm/launchdarkly-js-client-sdk@3.1.3/dist/ldclient.min.js77 ms54 ms10 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js?v=20230814-267 ms36 ms3.5 ms
cdnjs.cloudflare.com/ajax/libs/bodymovin/5.7.4/lottie.min.js66 ms33 ms32 ms
www.subway.com/dist/RemoteOrder/js/launchdarkly.js?6.22.17755 ms48 ms2.5 ms
ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js55 ms39 ms11 ms
ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js50 ms36 ms11 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation6.1 s
Other2.5 s
Style & Layout1.3 s
Script Parsing & Compilation887 ms
Rendering612 ms
Parse HTML & CSS208 ms
Garbage Collection168 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 24.5 KiB
URLTransfer SizeEst Savings
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …7.2 KiB5.2 KiB
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …6.1 KiB4.6 KiB
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …4.8 KiB3.7 KiB
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …4.1 KiB3.3 KiB
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …3.8 KiB3.1 KiB
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …2.7 KiB2.3 KiB
:root{--text: #222;--black: #000;--white: #fff;--grey: #6e6e6e;--blue: #5e9ed6;--yellow: #f2b700; … } …2.8 KiB2.3 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 2.4 KiB
URLTransfer SizeEst Savings
www.subway.com/dist/RemoteOrder/js/kount-web-client-sdk-bundle.js7.2 KiB2.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/digital/AdobeTarget/Paint_The_House/Web/26-02-2026/SOTD_...2.0 MiB
/digital/AdobeTarget/Paint_The_House/Web/26-02-2026/SOTD_...1.9 MiB
www.subway.com/dist/RemoteOrder/js/app.js?v=6.22.177340.9 KiB
/dist/RemoteOrder/js/components/customizer/index.14f2e228...333.6 KiB
assets.adobedtm.com/041a2403188d/9c33e01fd853/launch-c29f9a12ff43.min.js262.0 KiB
www.subway.com/klyminKDzLp_AdLIplZ0/m3cONpw2zamSkX/WWdFNA/P2IQ/VBhmIG0B167.8 KiB
cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js127.0 KiB
www.subway.com/dist/RemoteOrder/css/app-ltr.css?v=6.22.177124.1 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansLCG-Bold.woff117.4 KiB
www.subway.com/dist/RemoteOrder/css/asset/fonts/SubwaySansLCG-Medium.woff116.8 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
Subway catering box with an unwrapped sub, chips and cookie nearby. section#id_50_50_7d412 > div.component_50_50_image > picture > img
/en-us/-/media/northamerica/usa/shared/2026/2026_5050_cat...
div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img
/dam/urn:aaid:aem:91ca1652-aac8-4437-8d8f-46705391983d/re...
div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img
/dam/urn:aaid:aem:7415f31c-f0e9-463c-984b-b45656633775/re...
div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img
/dam/urn:aaid:aem:b0625dc0-5c4d-4d52-8074-daa35e5a81fc/re...
div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img
/dam/urn:aaid:aem:6153aa05-8b15-4d08-aa19-239cb2d27df6/re...
div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img div.bestseller-outofstock > div#bestsellerProductDetail > div.sub > img
/dam/urn:aaid:aem:63522e12-d82d-489c-9026-169c9900d94d/re...
mobile pause icon section.feature-banner > div#feature-banner-mobile-video > button#mobileToggleBtn > img#mobilePauseIcon
www.subway.com/en-us/-/media/northamerica/shared-content/pause.svg
"Don't miss the meatier shower" with 2 Protein Pockets section#id_promotion_19e74 > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/hp_promo...
"BOGO" with 2 Subway sandwiches and Sub Club logo section#id_promotion_1cc8d > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/hp_promo...
Protein Pocket with 20+ G of Protein section#id_promotion_8f583 > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/hp_promo...
Wednesday's Sweet Onion Teriyaki Sub section#id_promotion_c4fdf > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/sotd/hp_...
Mother’s Day Subway Gift Cards. section#id_promotion_48b59 > div.component_promotions_image > picture > img
/en-us/-/media/northamerica/usa/new-home/2026/w1/hp_promo...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:4acf2be5-0e2a-48b2-af26-f965cac82cf1/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:af861677-c797-4f16-92cf-3e3b0ea75a1a/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:bc917c78-9dd0-4234-8e2b-ed14a7f60790/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:1a7cdc7a-0d81-41ad-8819-570faf139bee/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:cb4b209a-17b7-41a0-94c0-fdfe6441236e/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:c93ec1e1-4b1a-4401-9baf-cb3404d56968/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:5eb41811-0323-4511-8ff1-b878d4a8f39d/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:3200b79e-8e4c-40ce-9552-a43868872c17/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:e9e37739-de39-405b-a95d-71cdf2310f0f/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:4921f3ec-63b1-4d38-bd5a-64905b10b25d/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:8e1ac33c-46c2-4d1d-92ae-71a42acbc386/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:bae5580a-0353-4e8a-98d9-18acf9727742/re...
li.component_menu > button.component_menu_link > picture.component_menu_card_image > img li.component_menu > button.component_menu_link > picture.component_menu_card_image > img
/dam/urn:aaid:aem:7ba05d17-1942-4ce3-9654-775176be3fe9/re...
profile sign in or join nav.navbar > div.navbar_right > button.account_logged > img
/en-us/-/media/project/remote-order/images/icons/05uiicon...
close div.modal-tc > div.modal-content > a#btn-close-curbside > img
www.subway.com/Assets/RemoteOrder/img/close@3x.png
close div.modal-tc > div.modal-content > a#btn-close-curbside > img
www.subway.com/Assets/RemoteOrder/img/close@3x.png
MVPRewardsLogo section#id_guestmvprewards_94658 > div.image > picture > img
/en-us/-/media/northamerica/shared-content/mvprewardslogo...
X div.modal-content > div.modalPopup__button > button.popup__button > img.icon
www.subway.com/Assets/RemoteOrder/img/share.png
empty bag nav.navbar > div.navbar_right > button.cart_bag > img
www.subway.com/en-us/-/media/project/remote-order/images/icons/emptycarticon.svg

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

●Optimize DOM size
●Optimize viewport for mobile
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 3 animated elements found
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 100 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 210 ms
○INP breakdown
○LCP request discovery
○User Timing marks and measures
95

Accessibility

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

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
INTRODUCING SUB CLUB™ div.component_wrapper > section#id_guestmvprewards_94658 > div.text > h4.title

These are opportunities to improve keyboard navigation in your application.

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
PROTEIN POCKETS div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
$4.99 SUB OF THE DAY div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
$6.99 MEAL OF THE DAY div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
SANDWICHES div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
FRESH FIT® div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
SNACKS, SIDES & DESSERTS div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
PROTEIN BOWLS div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
WRAPS div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
BREAKFAST div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
SALADS div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
FRESH FIT FOR KIDS® div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
PERSONAL PIZZA div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu
DRINKS div#menu-slider > div.swiper > ul.swiper-wrapper > li.component_menu

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[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.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Uses ARIA roles only on compatible elements
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○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
○`<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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
73

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
X div.modal-dialog > div.modal-content > button.btn-close > img.icon
www.subway.com/Assets/RemoteOrder/img/close.png24 x 2424 x 2436 x 36

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
js-cdn.dynatrace.com/jstag/15c157a40ab/bf69157qdp/66653261b3f39eb6_complete.js line 251, col 106

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
sdk.apptentive.com/v1/sdk.min.js
%c[Base] color: #ff414d; Namespace Collision, or, data is not in the correct format.
www.subway.com/en-us line 119, col 0
SyntaxError: Unexpected end of input

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.subway.com/klyminKDzLp_AdLIplZ0/m3cONpw2zamSkX/WWdFNA/P2IQ/VBhmIG0B
/dist/RemoteOrder/js/components/customizer/index.14f2e228.../dist/RemoteOrder/js/components/customizer/index.14f2e228...
www.subway.com/dist/RemoteOrder/js/app.js?v=6.22.177www.subway.com/dist/RemoteOrder/js/app.js.map
www.subway.com/dist/RemoteOrder/js/main.js?v=6.22.177www.subway.com/dist/RemoteOrder/js/main.js.map
cdn.jsdelivr.net/npm/launchdarkly-js-client-sdk@3.1.3/dist/ldclient.min.jscdn.jsdelivr.net/npm/launchdarkly-js-client-sdk@3.1.3/dist/ldclient.min.js.map
●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
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
77

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.subway.com/en-us/rewardsLearn More
cookiepedia.co.uk/giving-consent-to-cookiesMore information

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

Crawling and Indexing

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Cookie & Ad Settings div.footer_bottom_menu > ul > li > a.optanon-toggle-display

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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