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
cdn.optimizely.com/js/25742810060.js	300.0 s	96.3 KiB
t.contentsquare.net/uxa/6cfa29ccf79a7.js	900.0 s	90.9 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
tag.demandbase.com/n1qTRo0B.min.js	3600.0 s	18.5 KiB
style-assets.tableau.com/v16.1.2/fonts/tableau-icons.woff2	86400.0 s	31.6 KiB
a.quora.com/qevents.js	14400.0 s	14.7 KiB
/enterprise/tableau/prod/2024012/v1/oneTrust/scripttempla...	1631740.0 s	82.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
style-assets.tableau.com/v16.1.2/css/style.header-footer.min.css	86400.0 s	15.9 KiB
s.go-mpulse.net/boomerang/77T96-MLQ6A-56U4U-YVXFN-SV48P	604800.0 s	58.4 KiB
a.sfdcstatic.com/shared/js/public/nunjucks-slim.min.js	1171242.0 s	10.0 KiB
style-assets.tableau.com/v16.1.2/js/nav-bundle.min.js	86400.0 s	2.0 KiB
/rp.gif?ts=1776800283586&id=a2_f6ww2u6sl1mg&event=PageVis...	0.0 ms	666 B
/enterprise/tableau/prod/2024012/v1/oneTrust/scripttempla...	1631739.0 s	6.3 KiB
partners.tremorhub.com/sync?UIDM=0c333ea7-907a-40b1-b052-462116a67ccb	0.0 ms	391 B
cdn3.optimizely.com/js/geo4.js	0.0 ms	335 B
/_/ad/043fb55f1896481aa33d8cf8331b2ff0/pixel?tag=ViewCont...	0.0 ms	294 B
/_/ad/043fb55f1896481aa33d8cf8331b2ff0/pixel?tag=Generic&...	0.0 ms	214 B
/rp.gif?ts=1776800283667&id=a2_f6ww2u6sl1mg&event=Custom&...	0.0 ms	76 B
/collect?v=2&fmt=js&pid=4478%2C543&time=1776800283207&li_...	0.0 ms	43 B
/collect?v=2&fmt=js&pid=4478%2C543&time=1776800283531&li_...	0.0 ms	41 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:0.19827] map[node:map[boundingRect:map[bottom:1090 height:1076 left:0 right:412 top:14 width:412] lhId:page-4-DIV nodeLabel:main#main-content > div > section#1759776859576_1ei8 > div.blade__background path:1,HTML,1,BODY,1,DIV,2,MAIN,1,DIV,0,SECTION,3,DIV selector:main#main-content > div > section#1759776859576_1ei8 > div.blade__background snippet:<div class="blade__background blade__background--custom-mobile"> type:node] score:0.19827]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:109.803 source:map[type:text value:[unattributed]]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div > section#1759776859576_1ei8 > div.blade__background > img.background__image `div > section#1759776859576_1ei8 > div.blade__background > img.background__image`	/tableau/en-us/wp-content/uploads/sites/47/2026/01/TabDC-...	206.7 KiB	141.4 KiB
div.card__image__wrapper > span > a > img.card__image `div.card__image__wrapper > span > a > img.card__image`	/tableau/en-us/wp-content/uploads/sites/47/2025/09/tablea...	105.6 KiB	93.2 KiB
div.card__image__wrapper > span > a > img.card__image `div.card__image__wrapper > span > a > img.card__image`	/tableau/en-us/wp-content/uploads/sites/47/2025/10/Tablea...	88.2 KiB	76.0 KiB
div.container > article.grid > div.image__wrapper > img.image__asset `div.container > article.grid > div.image__wrapper > img.image__asset`	/tableau/en-us/wp-content/uploads/sites/47/2026/03/SFDC-A...	53.8 KiB	41.7 KiB

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-0-IMG

nodeLabel: div > section#1759776859576_1ei8 > div.blade__background > img.background__image

path: 1,HTML,1,BODY,1,DIV,2,MAIN,1,DIV,0,SECTION,3,DIV,0,IMG

selector: div > section#1759776859576_1ei8 > div.blade__background > img.background__image

snippet: <img src="https://wp.sfdcdigital.com/tableau/en-us/wp-content/uploads/sites/47/2026/…" class="background__image background__image--custom" alt="" sizes="100vw" srcset="https://wp.sfdcdigital.com/tableau/en-us/wp-content/uploads/sites/47/2026/…" height="100%" width="100%">

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

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
style-assets.tableau.com/v16.1.2/fonts/tableau-icons.woff2	5.0 ms

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
a.sfdcstatic.com/digital/@sfdc-www/clientlibs-web-components/v1-stable/top.js	5.6 KiB	763 ms

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: 770 ms

URL	Time Spent
tableau.com/	770 ms
www.tableau.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.

Element	Layout shift score
main#main-content > div > section#1759776859576_1ei8 > div.blade__background `main#main-content > div > section#1759776859576_1ei8 > div.blade__background`	0.198

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: 280 ms 71.7 KiB

URL	Transfer Size	Est Savings
www.tableau.com/c/public/exp/pbc/server/css/style.9a6e24bd01000d1e800f.css	62.7 KiB	52.7 KiB
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …	19.2 KiB	18.9 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 2.0 MiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=AW-11150957808&cx=c&gtm=4e64h1	144.4 KiB	106.1 KiB
www.googletagmanager.com/gtag/js?id=GT-TNHGZTKZ&cx=c&gtm=4e64h1	137.5 KiB	102.8 KiB
www.googletagmanager.com/gtag/js?id=AW-11360289967&cx=c&gtm=4e64h1	136.5 KiB	102.7 KiB
www.tableau.com/c/public/exp/pbc/lwc/prod.DpQ48YaW.js	109.7 KiB	102.2 KiB
www.googletagmanager.com/gtag/js?id=DC-11463663&cx=c&gtm=4e64h1	129.3 KiB	98.0 KiB
www.tableau.com/c/public/exp/pbc/server/templates.9ee7b849434b2a023a1b.js	82.1 KiB	80.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-BVCN	201.5 KiB	64.9 KiB
www.googletagmanager.com/gtag/js?id=DC-11549600&cx=c&gtm=4e64h1	129.3 KiB	60.2 KiB
www.googletagmanager.com/gtag/js?id=DC-9908883&cx=c&gtm=4e64h1	129.3 KiB	60.2 KiB
www.googletagmanager.com/gtag/js?id=DC-8292931&cx=c&gtm=4e64h1	129.3 KiB	60.2 KiB
www.googletagmanager.com/gtag/js?id=G-8YLN0SNXVS&cx=c&gtm=4e64h1	145.5 KiB	59.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-MDW3BV4G&gtm=4e64h1	132.9 KiB	57.5 KiB
www.googletagmanager.com/gtag/js?id=DC-11597767&cx=c&gtm=4e64h1	129.3 KiB	56.6 KiB
www.googletagmanager.com/gtag/js?id=GT-PZZMQM7&cx=c&gtm=4e64h1	144.4 KiB	56.0 KiB
www.googletagmanager.com/gtag/js?id=AW-749031162&cx=c&gtm=4e64h1	144.5 KiB	55.9 KiB
www.googletagmanager.com/gtag/js?id=AW-1040019177&cx=c&gtm=4e64h1	146.3 KiB	55.8 KiB
www.googletagmanager.com/gtag/js?id=GT-WK2DGFTC&cx=c&gtm=4e64h1	129.3 KiB	55.5 KiB
www.googletagmanager.com/gtag/js?id=AW-1070358085&cx=c&gtm=4e64h1	136.5 KiB	55.1 KiB
www.googletagmanager.com/gtag/js?id=AW-1040284089&cx=c&gtm=4e64h1	137.0 KiB	55.0 KiB
www.googletagmanager.com/gtag/js?id=GT-M3KFGVTH&cx=c&gtm=4e64h1	136.5 KiB	54.9 KiB
www.googletagmanager.com/gtag/js?id=AW-1061316053&cx=c&gtm=4e64h1	137.4 KiB	54.0 KiB
www.googletagmanager.com/gtag/js?id=AW-1059959353&cx=c&gtm=4e64h1	137.5 KiB	54.0 KiB
www.googletagmanager.com/gtag/js?id=AW-1041211059&cx=c&gtm=4e64h1	137.4 KiB	53.9 KiB
www.googletagmanager.com/gtag/js?id=AW-830457760&cx=c&gtm=4e64h1	141.4 KiB	53.9 KiB
www.googletagmanager.com/gtag/js?id=AW-11100665600&cx=c&gtm=4e64h1	137.5 KiB	53.8 KiB
www.googletagmanager.com/gtag/js?id=AW-16551358627&cx=c&gtm=4e64h1	137.5 KiB	53.8 KiB
www.googletagmanager.com/gtag/js?id=AW-842161014&cx=c&gtm=4e64h1	138.0 KiB	53.1 KiB
www.googletagmanager.com/gtag/js?id=AW-996391663&cx=c&gtm=4e64h1	137.4 KiB	50.8 KiB
/enterprise/tableau/prod/2024012/v1/oneTrust/scripttempla...	81.9 KiB	45.4 KiB
t.contentsquare.net/uxa/6cfa29ccf79a7.js	90.4 KiB	37.2 KiB
cdn.optimizely.com/js/25742810060.js	95.7 KiB	34.2 KiB
www.tableau.com/c/public/exp/pbc/server/scripts.1dbd8e09eac729e2673a.js	45.0 KiB	33.5 KiB
s.go-mpulse.net/boomerang/77T96-MLQ6A-56U4U-YVXFN-SV48P	58.2 KiB	26.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.googletagmanager.com/gtag/js?id=DC-11597767&cx=c&gtm=4e64h1	2.6 s	2.4 s	51 ms
www.googletagmanager.com/gtm.js?id=GTM-BVCN	1.4 s	1.3 s	78 ms
Unattributable	1.2 s	157 ms	0.0 ms
a.sfdcstatic.com/digital/@sfdc-www-emu/pbc-core-analytics/v1-stable/comp-data.js	895 ms	811 ms	2.0 ms
www.tableau.com/	786 ms	16 ms	11 ms
snap.licdn.com/li.lms-analytics/insight.min.js	533 ms	413 ms	103 ms
cdn.optimizely.com/js/25742810060.js	409 ms	372 ms	30 ms
t.contentsquare.net/uxa/6cfa29ccf79a7.js	399 ms	356 ms	31 ms
/enterprise/tableau/prod/2024012/v1/oneTrust/scripttempla...	383 ms	215 ms	44 ms
www.tableau.com/c/public/exp/pbc/lwc/prod.DpQ48YaW.js	313 ms	181 ms	124 ms
c.salesforce.com/digital/@sfdc-ogs/v1-stable/sdk/interactions.js	301 ms	233 ms	0.3 ms
www.googletagmanager.com/gtag/js?id=AW-1041211059&cx=c&gtm=4e64h1	262 ms	217 ms	43 ms
www.googletagmanager.com/gtag/js?id=G-8YLN0SNXVS&cx=c&gtm=4e64h1	252 ms	213 ms	38 ms
www.googletagmanager.com/gtag/js?id=AW-996391663&cx=c&gtm=4e64h1	251 ms	184 ms	39 ms
www.googletagmanager.com/gtm.js?id=GTM-MDW3BV4G&gtm=4e64h1	251 ms	139 ms	109 ms
www.googletagmanager.com/gtag/js?id=AW-749031162&cx=c&gtm=4e64h1	246 ms	208 ms	35 ms
www.googletagmanager.com/gtag/js?id=AW-1040019177&cx=c&gtm=4e64h1	239 ms	199 ms	37 ms
s.go-mpulse.net/boomerang/77T96-MLQ6A-56U4U-YVXFN-SV48P	232 ms	97 ms	19 ms
www.googletagmanager.com/gtag/js?id=GT-WK2DGFTC&cx=c&gtm=4e64h1	231 ms	182 ms	46 ms
www.googletagmanager.com/gtag/js?id=AW-1040284089&cx=c&gtm=4e64h1	227 ms	189 ms	37 ms
www.googletagmanager.com/gtag/js?id=GT-PZZMQM7&cx=c&gtm=4e64h1	220 ms	180 ms	39 ms
www.googletagmanager.com/gtag/js?id=AW-1061316053&cx=c&gtm=4e64h1	218 ms	178 ms	38 ms
www.googletagmanager.com/gtag/js?id=AW-842161014&cx=c&gtm=4e64h1	216 ms	179 ms	35 ms
www.googletagmanager.com/gtag/js?id=AW-830457760&cx=c&gtm=4e64h1	213 ms	175 ms	37 ms
www.googletagmanager.com/gtag/js?id=AW-1059959353&cx=c&gtm=4e64h1	212 ms	177 ms	34 ms
www.googletagmanager.com/gtag/js?id=AW-1070358085&cx=c&gtm=4e64h1	211 ms	179 ms	30 ms
www.googletagmanager.com/gtag/js?id=DC-11549600&cx=c&gtm=4e64h1	209 ms	166 ms	42 ms
www.googletagmanager.com/gtag/js?id=DC-9908883&cx=c&gtm=4e64h1	209 ms	177 ms	31 ms
www.googletagmanager.com/gtag/js?id=AW-11100665600&cx=c&gtm=4e64h1	202 ms	169 ms	32 ms
www.googletagmanager.com/gtag/js?id=GT-M3KFGVTH&cx=c&gtm=4e64h1	192 ms	155 ms	36 ms
www.googletagmanager.com/gtag/js?id=AW-16551358627&cx=c&gtm=4e64h1	191 ms	157 ms	33 ms
www.googletagmanager.com/gtag/js?id=DC-8292931&cx=c&gtm=4e64h1	190 ms	156 ms	32 ms
a.sfdcstatic.com/digital/one-trust/ext/v1-stable/gdpr.js	170 ms	165 ms	0.1 ms
www.tableau.com/c/public/exp/pbc/server/scripts.1dbd8e09eac729e2673a.js	170 ms	77 ms	23 ms
cdn3.optimizely.com/js/geo4.js	156 ms	152 ms	0.3 ms
a.sfdcstatic.com/digital/@sfdc-www/clientlibs-web-components/v1-stable/bottom.js	132 ms	90 ms	4.8 ms
www.redditstatic.com/ads/pixel.js	119 ms	89 ms	5.3 ms
/digital/@sfdc-www/clientlibs-web-components/v1-stable/us...	109 ms	74 ms	0.1 ms
www.googletagmanager.com/gtag/js?id=AW-11150957808&cx=c&gtm=4e64h1	109 ms	51 ms	57 ms
www.tableau.com/c/public/exp/pbc/tableau/app-CLR4QWWL.js	104 ms	100 ms	0.3 ms
/digital/@sfdc-www/clientlibs-web-components/v1-stable/an...	93 ms	68 ms	0.1 ms
tag.demandbase.com/n1qTRo0B.min.js	92 ms	71 ms	5.9 ms
www.tableau.com/c/public/exp/pbc/server/css/style.9a6e24bd01000d1e800f.css	86 ms	0.0 ms	0.0 ms
www.tableau.com/c/public/exp/pbc/server/templates.9ee7b849434b2a023a1b.js	83 ms	1.6 ms	81 ms
www.googletagmanager.com/gtag/js?id=GT-TNHGZTKZ&cx=c&gtm=4e64h1	66 ms	28 ms	38 ms
static.ads-twitter.com/uwt.js	63 ms	57 ms	4.6 ms
www.googletagmanager.com/gtag/js?id=AW-11360289967&cx=c&gtm=4e64h1	63 ms	27 ms	35 ms
www.googletagmanager.com/gtag/js?id=DC-11463663&cx=c&gtm=4e64h1	59 ms	25 ms	33 ms
a.sfdcstatic.com/digital/@sfdc-www/clientlibs-web-components/v1-stable/top.js	51 ms	41 ms	1.9 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	11.5 s
Script Parsing & Compilation	1.6 s
Other	1.6 s
Style & Layout	748 ms
Garbage Collection	228 ms
Parse HTML & CSS	205 ms
Rendering	56 ms

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 3.0 KiB

URL	Transfer Size	Est Savings
www.tableau.com/c/public/exp/pbc/tableau/app-CLR4QWWL.js	10.0 KiB	3.0 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.

URL	Transfer Size
/tableau/en-us/wp-content/uploads/sites/47/2026/01/TabDC-...	207.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-BVCN	201.8 KiB
www.googletagmanager.com/gtag/js?id=AW-1040019177&cx=c&gtm=4e64h1	146.4 KiB
www.googletagmanager.com/gtag/js?id=G-8YLN0SNXVS&cx=c&gtm=4e64h1	145.5 KiB
www.googletagmanager.com/gtag/js?id=AW-749031162&cx=c&gtm=4e64h1	144.5 KiB
www.googletagmanager.com/gtag/js?id=AW-11150957808&cx=c&gtm=4e64h1	144.5 KiB
www.googletagmanager.com/gtag/js?id=GT-PZZMQM7&cx=c&gtm=4e64h1	144.5 KiB
www.googletagmanager.com/gtag/js?id=AW-830457760&cx=c&gtm=4e64h1	141.5 KiB
www.googletagmanager.com/gtag/js?id=AW-842161014&cx=c&gtm=4e64h1	138.0 KiB
www.googletagmanager.com/gtag/js?id=AW-11100665600&cx=c&gtm=4e64h1	137.5 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.card__image__wrapper > span > a > img.card__image `div.card__image__wrapper > span > a > img.card__image`	/tableau/en-us/wp-content/uploads/sites/47/2025/09/tablea...
div.card__image__wrapper > span > a > img.card__image `div.card__image__wrapper > span > a > img.card__image`	/tableau/en-us/wp-content/uploads/sites/47/2025/10/Tablea...
Tableau, from Salesforce `div.global-header__nav-wrapper > div#block-tableau-logo > a.site-logo > img`	www.tableau.com/themes/custom/tableau_www/logo.v2.svg

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

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 96 user timings

●Avoid long main-thread tasks 20 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 200 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

○Avoid non-composited animations

Accessibility

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

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.card--card_resource > div.card__image__wrapper > span > a `div.card--card_resource > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`
div.card__content__wrapper > div.card__image__wrapper > span > a `div.card__content__wrapper > div.card__image__wrapper > span > a`

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.

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
English (US) `nav.content-container > div.global-footer__first > div#lang-dropdown > button.global-footer__language__toggle`

○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.

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

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

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

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

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

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

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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

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

○Elements with `role="dialog"` or `role="alertdialog"` 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

○`<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.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

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

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

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○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.

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
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

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 browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○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.tableau.com/pricing/tableau-plus	Learn more
www.tableau.com/why-tableau/data-culture	Learn more
www.tableau.com/analyst	Learn more
www.tableau.com/data-it-leader	Learn more
www.tableau.com/business-leader	Learn more
www.tableau.com/developer	Learn more
/solutions/customer/box-fights-cyber-threats-effectively-...	Read more
/solutions/customer/keybank-digital-transformation-tablea...	Read more
/solutions/customer/jaguar-land-rover-develops-pioneering...	Read more
/solutions/customer/m3-insurance-sees-upsurge-win-rates-a...	Read 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

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○robots.txt is valid