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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.

11

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
cdn.propertyview.net/media/images/081/52/dc/18cd3e73557149b8ea724c52a894.jpg86400.0 s13.7 MiB
cdn.propertyview.net/media/images/081/7a/19/fffb521a398bc6d4538f03c5c254.jpg86400.0 s10.2 MiB
cdn.propertyview.net/media/images/081/ea/f5/0d66416ceb9b7c55a1b1dab1523b.jpg86400.0 s8.6 MiB
cdn.quantummetric.com/qscripts/quantum-southwest.js300.0 s118.5 KiB
www.southwest.com/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd8600.0 s78.9 KiB
aswpsdkus.com/notify/v2/ua-sdk.min.js300.0 s62.8 KiB
cdn.cookielaw.org/scripttemplates/202410.1.0/otBannerSdk.js86400.0 s111.9 KiB
/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd8/...600.0 s33.0 KiB
cdn.branch.io/branch-latest.min.js300.0 s23.5 KiB
content.mink.southwest.com/p/js/1.js0.0 ms20.1 KiB
/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd8/...600.0 s18.6 KiB
cdn.cookielaw.org/logos/static/ot_company_logo.png86400.0 s19.2 KiB
/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd8/...600.0 s7.2 KiB
www.southwest.com/akam/13/5120f2e21600.0 s9.4 KiB
/content/app/scripts/analytics//b52dfd6476cb/16104dfaffa5...67786.0 s12.2 KiB
siteimproveanalytics.com/js/siteanalyze_10363.js86400.0 s12.5 KiB
/content/app/scripts/analytics//b52dfd6476cb/16104dfaffa5...67786.0 s8.8 KiB
swac360.my.salesforce.com/embeddedservice/5.0/esw.min.js86400.0 s9.4 KiB
/WRSiteInterceptEngine/?Q_ZID=ZN_6fEtw4RXYKndJOZ3600.0 s4.6 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...604800.0 s35.8 KiB
swac360.my.salesforce.com/embeddedservice/5.0/client/liveagent.esw.min.js86400.0 s6.5 KiB
swac360.my.salesforce.com/embeddedservice/5.0/frame/chasitor.esw.min.js86400.0 s5.9 KiB
/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd8/...600.0 s2.3 KiB
swac360.my.salesforce.com/embeddedservice/5.0/client/invite.esw.min.js86400.0 s5.1 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...604800.0 s18.6 KiB
swac360.my.salesforce.com/embeddedservice/5.0/esw.min.css86400.0 s4.6 KiB
swac360.my.salesforce.com/embeddedservice/5.0/utils/inert.min.js86400.0 s3.1 KiB
swac360.my.salesforce.com/embeddedservice/5.0/eswFrame.min.js86400.0 s2.7 KiB
swac360.my.salesforce.com/embeddedservice/5.0/utils/common.min.js86400.0 s2.6 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.5 KiB
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67783.0 s1.6 KiB
swac360.my.salesforce.com/embeddedservice/5.0/frame/session.esw.min.js86400.0 s1.7 KiB
/_r?sdk=web2.87.1&branch_key=key_live_giugWIpIXUYa4N52lEY...0.0 ms666 B
swac360.my.salesforce.com/embeddedservice/5.0/frame/broadcast.esw.min.js86400.0 s1.5 KiB
/collect/?pid=464562&conversionId=643161&fmt=gif&cookiesT...0.0 ms538 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67786.0 s1.1 KiB
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67782.0 s933 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67783.0 s910 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67783.0 s901 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67782.0 s868 B
swac360.my.salesforce.com/embeddedservice/5.0/frame/filetransfer.esw.min.js86400.0 s958 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67785.0 s854 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67785.0 s810 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67783.0 s791 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67785.0 s782 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67781.0 s776 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67783.0 s761 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67785.0 s734 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67786.0 s721 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67782.0 s712 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67781.0 s688 B
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...67782.0 s688 B
/tr?id=125603944727793&ev=PageView&noscript=1&dl=www.sout...0.0 ms19 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:0.32927] map[node:map[boundingRect:map[bottom:4354 height:4278 left:0 right:412 top:76 width:412] lhId:page-18-BODY nodeLabel:body.branch-banner-is-active path:1,HTML,1,BODY selector:body.branch-banner-is-active snippet:<body class=" branch-banner-is-active" style="margin-top: 76px; transition: 0.375s;"> type:node] score:0.065935] map[node:map[boundingRect:map[bottom:1378 height:706 left:0 right:412 top:672 width:412] lhId:page-9-DIV nodeLabel:Flights Vacations Hotels Cars Cruises Now accepting reservations through Octobe… path:1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,1,DIV,0,DIV,3,DIV,2,DIV,2,SECTION,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV selector:div.container__2Jwwp > div > div.container__2S9yC > div.item__3athy snippet:<div class="item__3athy row__3bwbS lastRow__3yQ-j" style="grid-column: span 1;"> type:node] score:0.053752 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.southwest.com/swa-resources/fonts/SouthwestSans-Bold.otf]]] type:subitems]] map[node:map[boundingRect:map[bottom:1378 height:1101 left:0 right:412 top:277 width:412] lhId:page-14-DIV nodeLabel:MAY & JUNE TRAVEL INCLUDED Super sale! Ready. Set. Jet. One-way as low as* 89 D… path:1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,1,DIV,0,DIV,3,DIV,2,DIV,2,SECTION,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV selector:div.layout__HiTxF > div#bookingSection > div.container__2Jwwp > div snippet:<div style="position: relative;"> type:node] score:0.053221] map[node:map[boundingRect:map[bottom:4212 height:4007 left:0 right:412 top:205 width:412] lhId:page-17-DIV nodeLabel:Earn 50,000 points + first checked bag is free. Learn more The current page is… path:1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,1,DIV,0,DIV,3,DIV,2,DIV selector:div.customer-light-theme > div.background__3cZJu > div#pageContent > div.pageContent__3XVqO snippet:<div class="pageContent__3XVqO"> type:node] score:0.041281] map[node:map[boundingRect:map[bottom:4212 height:4007 left:0 right:412 top:205 width:412] lhId:page-17-DIV nodeLabel:Earn 50,000 points + first checked bag is free. Learn more The current page is… path:1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,1,DIV,0,DIV,3,DIV,2,DIV selector:div.customer-light-theme > div.background__3cZJu > div#pageContent > div.pageContent__3XVqO snippet:<div class="pageContent__3XVqO"> type:node] score:0.039653]]

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.southwest.com/swa-resources/fonts/SouthwestSans-Regular.otf40 ms
www.southwest.com/swa-resources/fonts/SouthwestSans-Bold.otf25 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U
cdn.propertyview.net/media/images/081/52/dc/18cd3e73557149b8ea724c52a894.jpg13.7 MiB13.6 MiB
div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U
cdn.propertyview.net/media/images/081/7a/19/fffb521a398bc6d4538f03c5c254.jpg10.4 MiB10.2 MiB
div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U
cdn.propertyview.net/media/images/081/ea/f5/0d66416ceb9b7c55a1b1dab1523b.jpg9.0 MiB8.5 MiB
Two women driving a car div.container__3Riyt > div.specialOfferContainer__3rd3v > picture.container__2ucky > img.specialOfferImage__2EDwR
/swa-resources/images/offers/CB964610_HP4---SplOfferThree...607.5 KiB584.7 KiB
Score extra savings for a limited time at select RIU Hotels and Resorts. Book n… div.paddingTopDefault__236N9 > div.layout__HiTxF > div#landingHomePageIndexProductOverview > div.container__3p4xS
/swa-resources/images/responsive/homepage/prod_ov/gtwys-m...554.4 KiB491.9 KiB
/swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg div.backgroundColor__2J30W > div.backgroundImageContainer__263UX > picture.container__2ucky > img.image__JooQe
/swa-resources/images/responsive/homepage/hero/IMG-RHP-He...138.1 KiB94.4 KiB
Cruise ship on the ocean div.container__3Riyt > div.specialOfferContainer__3rd3v > picture.container__2ucky > img.specialOfferImage__2EDwR
/swa-resources/images/responsive/homepage/sp_offer/Cruise...112.3 KiB89.4 KiB
div.layout__HiTxF > div#landingHomePageIndexImgOverlay > div.bannerWithCardContainer__120BY > div.backgroundContainer__1qPBX div.layout__HiTxF > div#landingHomePageIndexImgOverlay > div.bannerWithCardContainer__120BY > div.backgroundContainer__1qPBX
www.southwest.com/swa-resources/images/offers/d-spoffers-ad-content-IMG.jpg110.4 KiB76.7 KiB
App icon image div.branch-banner-content > div.branch-banner-left > div.branch-banner-icon > img
cdn.branch.io/branch-assets/1605023054630-og_image.png58.2 KiB56.2 KiB
Hotel room div.container__3Riyt > div.specialOfferContainer__3rd3v > picture.container__2ucky > img.specialOfferImage__2EDwR
/swa-resources/images/offers/CB964022_HP4---SplOfferThree...48.0 KiB35.9 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:247.427 label:Time to first byte subpart:timeToFirstByte] map[duration:2394.03 label:Resource load delay subpart:resourceLoadDelay] map[duration:24.201 label:Resource load duration subpart:resourceLoadDuration] map[duration:617.544 label:Element render delay subpart:elementRenderDelay]]
lhId: page-5-IMG
nodeLabel: /swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg
path: 1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,1,DIV,0,DIV,3,DIV,2,DIV,2,SECTION,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,0,IMG
selector: div.backgroundColor__2J30W > div.backgroundImageContainer__263UX > picture.container__2ucky > img.image__JooQe
snippet: <img alt="/swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg" class="image__JooQe" fetchpriority="auto" src="/swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-5-IMG
nodeLabel: /swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg
path: 1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,1,DIV,0,DIV,3,DIV,2,DIV,2,SECTION,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,0,IMG
selector: div.backgroundColor__2J30W > div.backgroundImageContainer__263UX > picture.container__2ucky > img.image__JooQe
snippet: <img alt="/swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg" class="image__JooQe" fetchpriority="auto" src="/swa-resources/images/responsive/homepage/hero/IMG-RHP-Hero-20260413.jpg">

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.southwest.com/assets/app/scripts/swa-common.js240.8 KiB1.4 s
www.southwest.com/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd878.9 KiB453 ms
www.southwest.com/swa-resources/scripts/motion-point/mp_linkcode.js1.1 KiB
www.southwest.com/swa-resources/scripts/swa-di.js4.3 KiB
www.southwest.com/swa-resources/styles/landing-home-page-v2-override.css924 B

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 857 ms
URLTime Spent
southwest.com/857 ms
www.southwest.com/0.0 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.branch-banner-is-active body.branch-banner-is-active
0.066
Flights Vacations Hotels Cars Cruises Now accepting reservations through Octobe… div.container__2Jwwp > div > div.container__2S9yC > div.item__3athy
0.054
MAY & JUNE TRAVEL INCLUDED Super sale! Ready. Set. Jet. One-way as low as* 89 D… div.layout__HiTxF > div#bookingSection > div.container__2Jwwp > div
0.053
Earn 50,000 points + first checked bag is free. Learn more The current page is… div.customer-light-theme > div.background__3cZJu > div#pageContent > div.pageContent__3XVqO
0.041
Earn 50,000 points + first checked bag is free. Learn more The current page is… div.customer-light-theme > div.background__3cZJu > div#pageContent > div.pageContent__3XVqO
0.040
MAY & JUNE TRAVEL INCLUDED Super sale! Ready. Set. Jet. One-way as low as* 89 D… div.layout__HiTxF > div#bookingSection > div.container__2Jwwp > div
0.027
body.branch-banner-is-active body.branch-banner-is-active
0.023
Branch Banner Frame body.branch-banner-is-active > iframe#branch-banner-iframe
0.010
Earn 50,000 points + first checked bag is free. Learn more The current page is… div.customer-light-theme > div.background__3cZJu > div#pageContent > div.pageContent__3XVqO
0.009
Branch Banner Frame body.branch-banner-is-active > iframe#branch-banner-iframe
0.005
Branch Banner Frame body.branch-banner-is-active > iframe#branch-banner-iframe
0.002

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 450 ms 65.7 KiB
URLTransfer SizeEst Savings
www.southwest.com/v2/landing/home-page/static/25.0.1/css/app-e96e9bea.css52.8 KiB47.6 KiB
20.3 KiB18.1 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: 2.3 s 750.3 KiB
URLTransfer SizeEst Savings
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-e96e9bea.js235.1 KiB116.9 KiB
aswpsdkus.com/notify/v2/ua-125.min.js110.7 KiB79.3 KiB
www.googletagmanager.com/gtag/js?id=DC-8601678&cx=c&gtm=4e64e1129.1 KiB61.3 KiB
cdn.cookielaw.org/scripttemplates/202410.1.0/otBannerSdk.js111.7 KiB61.3 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-111e1271.js131.4 KiB58.9 KiB
www.googletagmanager.com/gtag/js?id=AW-826888480143.9 KiB47.9 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-dcb821d8.js83.1 KiB47.2 KiB
cdn.quantummetric.com/qscripts/quantum-southwest.js117.9 KiB46.1 KiB
www.southwest.com/swa-resources/scripts/analytics/analytics.js152.5 KiB33.5 KiB
aswpsdkus.com/notify/v2/ua-sdk.min.js62.3 KiB31.3 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-49d0a293.js53.7 KiB31.0 KiB
/di/swadvc/cc.js?sid=7b66b3c6e172eed2&ts=1776294298149&na...32.5 KiB26.5 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...35.7 KiB24.3 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/en.js21.9 KiB21.9 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-adcb47af.js50.3 KiB21.2 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-6fff978b.js29.8 KiB21.2 KiB
aswpsdkus.com/notify/v2/ua-666.min.js28.2 KiB20.6 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.

URLTotal CPU TimeScript EvaluationScript Parse
www.southwest.com/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd88.1 s7.0 s58 ms
www.southwest.com/4.6 s3.4 s3.7 ms
Unattributable3.3 s347 ms1.8 ms
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-dcb821d8.js1.1 s1.1 s37 ms
cdn.quantummetric.com/qscripts/quantum-southwest.js858 ms802 ms43 ms
www.southwest.com/swa-resources/scripts/analytics/analytics.js599 ms461 ms115 ms
www.southwest.com/assets/app/scripts/swa-common.js499 ms446 ms46 ms
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-49d0a293.js333 ms185 ms22 ms
cdn.cookielaw.org/scripttemplates/202410.1.0/otBannerSdk.js324 ms219 ms55 ms
www.googletagmanager.com/gtag/js?id=DC-8601678&cx=c&gtm=4e64e1297 ms244 ms51 ms
www.googletagmanager.com/gtag/js?id=AW-826888480221 ms146 ms57 ms
www.southwest.com/akam/13/5120f2e196 ms148 ms5.1 ms
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-e96e9bea.js168 ms21 ms98 ms
/_r?sdk=web2.87.1&branch_key=key_live_giugWIpIXUYa4N52lEY...145 ms119 ms1.4 ms
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...120 ms94 ms15 ms
aswpsdkus.com/notify/v2/ua-sdk.min.js99 ms63 ms36 ms
/resources/c76dc01aee548ff55d184615dd91bee22130011c85bd8/...85 ms77 ms7.4 ms
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...75 ms68 ms0.5 ms
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-111e1271.js63 ms0.8 ms62 ms
www.southwest.com/swa-ui/bootstrap/landing-home-page-v2/1/content/en.js62 ms0.9 ms61 ms
/content/app/scripts/analytics/b52dfd6476cb/16104dfaffa5/...56 ms52 ms0.4 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js55 ms45 ms3.3 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 Evaluation15.6 s
Other3.8 s
Script Parsing & Compilation1.0 s
Style & Layout871 ms
Garbage Collection435 ms
Rendering350 ms
Parse HTML & CSS153 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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
cdn.propertyview.net/media/images/081/52/dc/18cd3e73557149b8ea724c52a894.jpg13.7 MiB
cdn.propertyview.net/media/images/081/7a/19/fffb521a398bc6d4538f03c5c254.jpg10.2 MiB
cdn.propertyview.net/media/images/081/ea/f5/0d66416ceb9b7c55a1b1dab1523b.jpg8.6 MiB
/swa-resources/images/offers/CB964610_HP4---SplOfferThree...608.3 KiB
/swa-resources/images/responsive/homepage/prod_ov/gtwys-m...555.2 KiB
www.southwest.com/assets/app/scripts/swa-common.js240.8 KiB
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-e96e9bea.js235.6 KiB
www.southwest.com/content/app/scripts/analytics/analytics.js153.1 KiB
www.googletagmanager.com/gtag/js?id=AW-826888480144.2 KiB
/swa-resources/images/responsive/homepage/hero/IMG-RHP-He...138.6 KiB

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

●Optimize DOM size
●Forced reflow
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 14 animated elements found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 60 ms
●Server Backend Latencies 150 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
○INP breakdown
97

Accessibility

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

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
Super sale! Ready. Set. Jet. div.container__3p4xS > div.mainLayout__1jKOZ > div.textContent__3-wMK > div
One-way as low as* div.textContent__3-wMK > div.offerDetails__2zw_j > div > div
89 div.offerDetails__2zw_j > div > div.currency__1vXod > div.displayLarge__1cPop
From New York (LaGuardia), NY div.textContent__3-wMK > div.offerDetails__2zw_j > div > div
*Restrictions and exclusions apply. 21-day advance purchase required. Seats/day… div.mainLayout__1jKOZ > div > div.htmlValue__1ElrM > p

These are opportunities to improve the legibility of your content.

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
Show fares in points form.form__3tmnN > div.fareOptionsContainer__2RRWu > span.showFareInPoints___f1CQ > div.checkbox__37tXt
Search with low fare calendar form.form__3tmnN > div.fareOptionsContainer__2RRWu > span.lowFareCalendarCheckbox__3CyCf > div.checkbox__37tXt
Explore package div > div.container__3Riyt > div.layout__3p5eH > a.navButton__3bxN4
Explore package div > div.container__3Riyt > div.layout__3p5eH > a.navButton__3bxN4
Explore package div > div.container__3Riyt > div.layout__3p5eH > a.navButton__3bxN4
See more featured deals div.layout__HiTxF > div#featuredPackagesCarousel > div.callToAction__B_uQT > a.button__uPCsA
Privacy Policy div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link
○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
●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
●`[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.
●`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
●ARIA input fields have accessible names
●Elements use only permitted ARIA attributes
●ARIA toggle fields have accessible names
●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>`).
●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
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Identical links have the same purpose.
○`[accesskey]` values are unique
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with the `role=text` attribute do not have focusable descendents.
○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
○`<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
○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>`.
○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.
92

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U
cdn.propertyview.net/media/images/081/ea/f5/0d66416ceb9b7c55a1b1dab1523b.jpg256 x 160 (1.60)5254 x 3500 (1.50)
div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U
cdn.propertyview.net/media/images/081/7a/19/fffb521a398bc6d4538f03c5c254.jpg256 x 160 (1.60)5262 x 3505 (1.50)
div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U div > div.container__3Riyt > picture.container__2ucky > img.image__2Lq1U
cdn.propertyview.net/media/images/081/52/dc/18cd3e73557149b8ea724c52a894.jpg256 x 160 (1.60)5000 x 3200 (1.56)

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
about:blank
Access to CSS stylesheet at 'https://swac360.my.salesforce.com/embeddedservice/5.0/esw.min.css' from origin 'https://www.southwest.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
swac360.my.salesforce.com/embeddedservice/5.0/esw.min.css
Failed to load resource: net::ERR_FAILED

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.southwest.com/v2/landing/home-page/static/25.0.1/js/app-e96e9bea.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/app-e96e9bea.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-111e1271.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/app-111e1271.js.map
www.southwest.com/swa-ui/bootstrap/landing-home-page-v2/1/content/en.js
www.southwest.com/swa-resources/scripts/analytics/analytics.js
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-adcb47af.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-adcb47af.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-6fff978b.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-6fff978b.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-49d0a293.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-49d0a293.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-27545368.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-27545368.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-059be3de.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/vendor-059be3de.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/en.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/en.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/en.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/en.js.map
www.southwest.com/v2/landing/home-page/static/25.0.1/js/app-dcb821d8.jswww.southwest.com/v2/landing/home-page/static/25.0.1/js/app-dcb821d8.js.map
●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
●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
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
○Detected JavaScript libraries
92

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
/a1/southwest/AEP50KPlus0326?REF=FULLSITE&CELL=62KC&clk=C...Learn more
/a1/southwest/AEP50KPlus0326?REF=FULLSITE&CELL=62KF&clk=C...Learn more

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

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

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