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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.

7

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
www.wto.org/images/img_index/photos/semiconductors_md.jpg0.0 ms243.9 KiB
www.wto.org/images/img_index/photos/dgno_5mar21_md.jpg0.0 ms224.3 KiB
www.wto.org/images/mc14/logobannerhome_e.png0.0 ms191.4 KiB
www.wto.org/images/img_index/fishacceptance15925.jpg0.0 ms153.0 KiB
www.wto.org/images/mc14/homeclosingphotomc14.jpg0.0 ms140.2 KiB
www.wto.org/images/img_index/photos/gavel_on_sounding_block_md.jpg0.0 ms135.5 KiB
www.wto.org/images/mc14/media.png0.0 ms108.8 KiB
www.wto.org/images/mc12/webcasting.jpg0.0 ms81.9 KiB
www.wto.org/images/mc14/mc14-logisticsicon.png0.0 ms76.2 KiB
www.wto.org/images/mc14/mc14-news.png0.0 ms66.3 KiB
www.wto.org/images/img_index/photos/TRIPS_Tech_Transfer_20260421161437_md.jpg0.0 ms58.0 KiB
www.wto.org/images/img_index/photos/Fish_Fund_updated_20260415125754_md.png0.0 ms49.4 KiB
www.wto.org/images/mc14/mc14-calendaricon.png0.0 ms31.9 KiB
www.wto.org/library/styles/wto-blessed1.css?z=15476341030570.0 ms27.1 KiB
www.wto.org/images/mc14/mc14-docsicon.png0.0 ms26.4 KiB
www.wto.org/library/styles/fonts/museo/3308EE_0_0.woff20.0 ms25.8 KiB
www.wto.org/library/styles/fonts/museo/3308EE_4_0.woff20.0 ms25.7 KiB
www.wto.org/library/styles/fonts/museo/3308EE_2_0.woff20.0 ms25.5 KiB
www.wto.org/library/styles/fonts/museo/3308EE_1_0.woff20.0 ms25.3 KiB
www.wto.org/library/styles/wto-blessed3.css?z=15476341030570.0 ms21.1 KiB
www.wto.org/library/styles/wto.css0.0 ms19.6 KiB
www.wto.org/library/styles/wto-blessed2.css?z=15476341030570.0 ms19.1 KiB
www.wto.org/images/img_index/photos/Robert-Staiger_e_lg_20260309112950.jpg0.0 ms15.2 KiB
www.wto.org/library/_icons/WTO.woff0.0 ms11.1 KiB
www.wto.org/library/events/responsive/lightbox/lightgallery.js0.0 ms8.6 KiB
www.wto.org/images/wtomenus/logo_en.gif0.0 ms8.2 KiB
www.wto.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s11.2 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
www.wto.org/library/events/responsive/lightbox/lightgallery.css0.0 ms4.1 KiB
www.wto.org/library/events/responsive/lightbox/picturefill.min.js0.0 ms3.2 KiB
plausible.io/js/pa-dQXcKU7FLBRKs5wXfaQPD.js60.0 s3.2 KiB
www.wto.org/library/events/responsive/lightbox/lg-thumbnail.js0.0 ms3.2 KiB
www.wto.org/library/events/responsive/lightbox/lg-zoom.js0.0 ms2.9 KiB
www.wto.org/library/events/responsive/lightbox/lg-video.js0.0 ms2.2 KiB
www.wto.org/library/styles/flexslider.css0.0 ms1.6 KiB
www.wto.org/library/events/responsive/lightbox/lg-autoplay.js0.0 ms1.6 KiB
www.wto.org/library/events/responsive/lightbox/lg-share.js0.0 ms1.4 KiB
www.wto.org/library/events/responsive/lightbox/jquery.mousewheel.min.js0.0 ms1.3 KiB
www.wto.org/images/flickr.png0.0 ms1.3 KiB
www.wto.org/library/events/responsive/lightbox/lg-fullscreen.js0.0 ms1.2 KiB
www.wto.org/images/icons/twitter_x.png0.0 ms1.1 KiB
www.wto.org/library/events/responsive/lightbox/lightgallery_style.css0.0 ms682 B
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s0 B
www.wto.org/cdn-cgi/challenge-platform/scripts/jsd/main.js14400.0 s0 B
www.wto.org/images/mc14/mc14homebfnotes.gif0.0 ms0 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:0.048783] map[node:map[boundingRect:map[bottom:1851 height:1196 left:0 right:412 top:655 width:412] lhId:page-8-DIV nodeLabel:Calendar Documents Logistics News Media #MC14 Briefing notes Briefing note… path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV selector:div#page > div#content > div.row > div#news-slider-destination snippet:<div class="col-xs-12 col-sm-6 col-md-8 col-lg-9" id="news-slider-destination"> type:node] score:0.048561 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:717 height:92 left:77 right:309 top:625 width:232] lhId:page-0-IMG nodeLabel:div > div.row > a > img path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div > div.row > a > img snippet:<img src="/images/mc14/logobannerhome_e.png" width="100%"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:849 height:18 left:175 right:237 top:831 width:62] lhId:page-13-A nodeLabel:#MC14 path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,4,DIV,0,DIV,0,DIV,0,H3,0,STRONG,0,A selector:div.panel-body > h3.semi-bold500 > strong > a snippet:<a href="/english/thewto_e/minist_e/mc14_e/mc14_e.htm" target="_blank"> type:node] score:0.000222 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:150 height:54 left:10 right:192 top:96 width:182] lhId:page-7-IMG nodeLabel:Click here to return to homepage path:1,HTML,1,BODY,32,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.row > div.col-xs-6 > a#logo > img.img-responsive snippet:<img src="/images/wtomenus/logo_en.gif" alt="Click here to return to homepage" class="img-responsive"> 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:0.383687] map[node:map[boundingRect:map[bottom:1851 height:1196 left:0 right:412 top:655 width:412] lhId:page-8-DIV nodeLabel:Calendar Documents Logistics News Media #MC14 Briefing notes Briefing note… path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV selector:div#page > div#content > div.row > div#news-slider-destination snippet:<div class="col-xs-12 col-sm-6 col-md-8 col-lg-9" id="news-slider-destination"> type:node] score:0.225386 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:717 height:92 left:77 right:309 top:625 width:232] lhId:page-0-IMG nodeLabel:div > div.row > a > img path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div > div.row > a > img snippet:<img src="/images/mc14/logobannerhome_e.png" width="100%"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1851 height:1196 left:0 right:412 top:655 width:412] lhId:page-8-DIV nodeLabel:Calendar Documents Logistics News Media #MC14 Briefing notes Briefing note… path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV selector:div#page > div#content > div.row > div#news-slider-destination snippet:<div class="col-xs-12 col-sm-6 col-md-8 col-lg-9" id="news-slider-destination"> type:node] score:0.158301 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:403 height:232 left:0 right:412 top:171 width:412] lhId:page-6-IMG nodeLabel:div.col-xs-12 > div.rel > a > img.img-responsive path:1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,0,DIV,0,DIV,0,UL,0,LI,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.col-xs-12 > div.rel > a > img.img-responsive snippet:<img src="/images/img_index/photos/TRIPS_Tech_Transfer_20260421161437_md.jpg" class="img-responsive" alt=""> 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.wto.org/library/styles/fonts/museo/3308EE_2_0.woff2395 ms
www.wto.org/library/styles/fonts/museo/3308EE_0_0.woff2390 ms
www.wto.org/library/styles/fonts/museo/3308EE_1_0.woff2385 ms
www.wto.org/library/_icons/WTO.woff385 ms
www.wto.org/library/styles/fonts/museo/3308EE_4_0.woff2385 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.row > a > img div > div.row > a > img
www.wto.org/images/mc14/logobannerhome_e.png191.0 KiB180.4 KiB
Media div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/media.png108.1 KiB107.6 KiB
Logistics div.mc14-icon-inner > div.mc14-icon-top > a > img.mc14-logistics-fix
www.wto.org/images/mc14/mc14-logisticsicon.png76.0 KiB75.7 KiB
News div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/mc14-news.png66.1 KiB66.0 KiB
Calendar div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/mc14-calendaricon.png31.6 KiB31.5 KiB
Documents div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/mc14-docsicon.png26.1 KiB25.9 KiB
div.col-xs-12 > div.rel > a > img.img-responsive div.col-xs-12 > div.rel > a > img.img-responsive
www.wto.org/images/img_index/photos/TRIPS_Tech_Transfer_20260421161437_md.jpg57.9 KiB12.1 KiB
Click here to return to homepage div.row > div.col-xs-6 > a#logo > img.img-responsive
www.wto.org/images/wtomenus/logo_en.gif8.1 KiB5.0 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:796.81 label:Time to first byte subpart:timeToFirstByte] map[duration:11066.353 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: div > div.row > a > img
path: 1,HTML,1,BODY,32,DIV,4,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,A,0,IMG
selector: div > div.row > a > img
snippet: <img src="/images/mc14/logobannerhome_e.png" 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.

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.wto.org/library/events/moment.js32.4 KiB
www.wto.org/library/events/moment-timezone.js18.6 KiB
www.wto.org/library/photo_gallery/slideshow_data.js101.1 KiB600 ms
www.wto.org/library/wtomenus/common_data_e.js2.7 KiB
www.wto.org/library/events/interactive_cal_code.js18.1 KiB150 ms
www.wto.org/library/photo_gallery/photo_gallery_code.js12.3 KiB
www.wto.org/library/wtomenus/jquery.min.js29.9 KiB150 ms
www.wto.org/library/news/index_news_code_e.js2.5 KiB
www.wto.org/library/bodies/bodies_public.js7.9 KiB
www.wto.org/library/photo_gallery/slideshow_data.js101.1 KiB
www.wto.org/library/news/news_vars_e.js24.9 KiB300 ms
www.wto.org/library/styles/wto-blessed1.css?z=154763410305727.1 KiB150 ms
www.wto.org/library/styles/wto.css19.6 KiB150 ms
www.wto.org/library/events/responsive/lightbox/lightgallery_style.css682 B
www.wto.org/library/events/meetings_2026.js11.9 KiB
www.wto.org/library/member_data_functions.js1.7 KiB
www.wto.org/library/styles/wto-blessed2.css?z=154763410305719.1 KiB
www.wto.org/library/events/responsive/lightbox/lightgallery.css4.1 KiB150 ms
www.wto.org/library/wtomenus/jkmegamenu.js2.4 KiB
www.wto.org/library/authentication/jquery-1.11.2.min.js29.9 KiB
www.wto.org/library/styles/wto-blessed3.css?z=154763410305721.1 KiB150 ms
www.wto.org/library/news/news_2026_e.js19.1 KiB150 ms
www.wto.org/library/imrdlib.js1.2 KiB
www.wto.org/library/news/current_news_e.js3.3 KiB
www.wto.org/library/wtomenus/common_data_public_e.js8.7 KiB
www.wto.org/library/authentication/jquery-cookie.js1.5 KiB
www.wto.org/library/authentication/JavaScriptPrincipal.js2.7 KiB
www.wto.org/library/authentication/json2.js5.9 KiB
www.wto.org/library/wtomenus/common_logic_e.js4.1 KiB
www.wto.org/library/styles/flexslider.css1.6 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 1.1 s
URLTime Spent
wto.org/1.1 s
www.wto.org/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
Calendar Documents Logistics News Media #MC14 Briefing notes Briefing note… div#page > div#content > div.row > div#news-slider-destination
0.225
Calendar Documents Logistics News Media #MC14 Briefing notes Briefing note… div#page > div#content > div.row > div#news-slider-destination
0.158
Calendar Documents Logistics News Media #MC14 Briefing notes Briefing note… div#page > div#content > div.row > div#news-slider-destination
0.049
#MC14 div.panel-body > h3.semi-bold500 > strong > a
0.000

Diagnostics

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: 750 ms 143.0 KiB
URLTransfer SizeEst Savings
www.wto.org/library/photo_gallery/slideshow_data.js100.9 KiB35.0 KiB
www.wto.org/library/photo_gallery/slideshow_data.js100.9 KiB35.0 KiB
www.wto.org/library/flashvideo/flash_video_e.js209.3 KiB28.9 KiB
www.wto.org/library/events/moment.js32.4 KiB13.7 KiB
www.wto.org/library/events/interactive_cal_code.js18.0 KiB4.5 KiB
www.wto.org/library/news/news_vars_e.js24.8 KiB4.4 KiB
www.wto.org/library/wtomenus/loader_wide_2011.js13.5 KiB4.4 KiB
www.wto.org/library/authentication/json2.js5.4 KiB4.3 KiB
www.wto.org/library/events/responsive/lightbox/lightgallery.js8.5 KiB4.0 KiB
www.wto.org/library/flashvideo/flash_video_code.js11.8 KiB3.7 KiB
www.wto.org/library/photo_gallery/photo_gallery_code.js12.2 KiB2.8 KiB
www.wto.org/library/news/news_2026_e.js18.2 KiB2.2 KiB

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: 150 ms 80.6 KiB
URLTransfer SizeEst Savings
www.wto.org/library/styles/wto-blessed1.css?z=154763410305727.0 KiB24.7 KiB
www.wto.org/library/styles/wto-blessed3.css?z=154763410305720.5 KiB19.8 KiB
www.wto.org/library/styles/wto-blessed2.css?z=154763410305719.0 KiB18.8 KiB
www.wto.org/library/styles/wto.css19.5 KiB17.4 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: 600 ms 110.6 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-4C48KGVJMD155.5 KiB66.1 KiB
www.wto.org/library/authentication/jquery-1.11.2.min.js29.8 KiB22.3 KiB
www.wto.org/library/wtomenus/jquery.min.js29.8 KiB22.2 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.wto.org/24.2 s23.3 s8.0 ms
www.wto.org/library/events/interactive_cal_code.js22.5 s22.4 s23 ms
www.wto.org/library/wtomenus/common_logic_e.js3.2 s3.2 s2.8 ms
Unattributable905 ms3.6 ms0.0 ms
www.wto.org/cdn-cgi/challenge-platform/scripts/jsd/main.js580 ms525 ms11 ms
www.googletagmanager.com/gtag/js?id=G-4C48KGVJMD364 ms272 ms61 ms
www.wto.org/library/photo_gallery/slideshow_data.js213 ms15 ms197 ms
www.wto.org/library/flashvideo/flash_video_e.js180 ms16 ms164 ms
www.wto.org/library/wtomenus/loader_wide_2011.js126 ms31 ms7.6 ms
www.wto.org/library/authentication/jquery-1.11.2.min.js108 ms81 ms22 ms
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...53 ms37 ms7.9 ms
www.wto.org/library/wtomenus/jquery.min.js50 ms37 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 Evaluation50.1 s
Other1.1 s
Script Parsing & Compilation707 ms
Rendering371 ms
Style & Layout358 ms
Garbage Collection177 ms
Parse HTML & CSS176 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 2.7 KiB
URLTransfer SizeEst Savings
www.wto.org/library/styles/wto-blessed1.css?z=154763410305727.1 KiB2.7 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
www.wto.org/images/mc14/mc14homebfnotes.gif6.7 MiB
www.wto.org/images/img_index/photos/semiconductors_md.jpg243.9 KiB
www.wto.org/images/img_index/photos/dgno_5mar21_md.jpg224.3 KiB
www.wto.org/library/flashvideo/flash_video_e.js209.4 KiB
www.wto.org/images/mc14/logobannerhome_e.png191.4 KiB
www.googletagmanager.com/gtag/js?id=G-4C48KGVJMD155.9 KiB
www.wto.org/images/img_index/fishacceptance15925.jpg153.0 KiB
www.wto.org/images/mc14/homeclosingphotomc14.jpg140.2 KiB
www.wto.org/images/img_index/photos/gavel_on_sounding_block_md.jpg135.5 KiB
www.wto.org/library/events/wto_events_data.json132.7 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
News div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/mc14-news.png
Calendar div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/mc14-calendaricon.png
Documents div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/mc14-docsicon.png
Logistics div.mc14-icon-inner > div.mc14-icon-top > a > img.mc14-logistics-fix
www.wto.org/images/mc14/mc14-logisticsicon.png
Media div.mc14-icon-inner > div.mc14-icon-top > a > img
www.wto.org/images/mc14/media.png
div.panel > div.row > div.col-xs-12 > img.img-responsive div.panel > div.row > div.col-xs-12 > img.img-responsive
www.wto.org/images/mc14/mc14homebfnotes.gif
div > div.row > a > img div > div.row > a > img
www.wto.org/images/mc14/logobannerhome_e.png
div.col-xs-12 > div.rel > a > img.img-responsive div.col-xs-12 > div.rel > a > img.img-responsive
www.wto.org/images/img_index/photos/TRIPS_Tech_Transfer_20260421161437_md.jpg
Click here to return to homepage div.row > div.col-xs-6 > a#logo > img.img-responsive
www.wto.org/images/wtomenus/logo_en.gif
ul.follow-wto > li.twitter > a > img ul.follow-wto > li.twitter > a > img
www.wto.org/images/icons/twitter_x.png
flickr ul.follow-wto > li.flickr > a > img
www.wto.org/images/flickr.png

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
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 15 long tasks found
●Network Requests
●Network Round Trip Times 0 ms
●Server Backend Latencies 380 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 390 ms
○INP breakdown
○LCP request discovery
○Avoid non-composited animations
78

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.newsletter > form.signupform > div.form-group > button.newsletter-button div.newsletter > form.signupform > div.form-group > button.newsletter-button
div.newsletter > form.signupform > div.form-group > button.newsletter-button div.newsletter > form.signupform > div.form-group > button.newsletter-button

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div > div.row > a > img div > div.row > a > img
div.panel > div.row > div.col-xs-12 > img.img-responsive div.panel > div.row > div.col-xs-12 > img.img-responsive
ul.follow-wto > li.twitter > a > img ul.follow-wto > li.twitter > a > img

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.row > div.col-xs-8 > div.rel > a.btn div.row > div.col-xs-8 > div.rel > a.btn
div.col-xs-6 > form.site-search-form > div.form-group > a.btn div.col-xs-6 > form.site-search-form > div.form-group > a.btn
nav#menu > ul.nav > li.dropdown > a.dropdown-toggle nav#menu > ul.nav > li.dropdown > a.dropdown-toggle
nav#menu > ul.nav > li.dropdown > a.dropdown-toggle nav#menu > ul.nav > li.dropdown > a.dropdown-toggle
nav#menu > ul.nav > li.dropdown > a.dropdown-toggle nav#menu > ul.nav > li.dropdown > a.dropdown-toggle
nav#menu > ul.nav > li.dropdown > a.dropdown-toggle nav#menu > ul.nav > li.dropdown > a.dropdown-toggle
nav#menu > ul.nav > li.dropdown > a.dropdown-toggle nav#menu > ul.nav > li.dropdown > a.dropdown-toggle
nav#menu > ul.nav > li.dropdown > a.dropdown-toggle nav#menu > ul.nav > li.dropdown > a.dropdown-toggle
div.row > div.col-xs-12 > div.rel > a div.row > div.col-xs-12 > div.rel > a
div.col-xs-8 > div > div.row > a div.col-xs-8 > div > div.row > a
div.col-xs-12 > ul.follow-wto > li.more-footer > a div.col-xs-12 > ul.follow-wto > li.more-footer > 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.

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
Home nav#menu > ul.nav > li.active > a
About WTO nav#menu > ul.nav > li.dropdown > a
News and events nav#menu > ul.nav > li.dropdown > a
Trade topics nav#menu > ul.nav > li.dropdown > a
WTO membership nav#menu > ul.nav > li.dropdown > a
Documents, data and resources nav#menu > ul.nav > li.dropdown > a
WTO and you nav#menu > ul.nav > li.dropdown > a
Sign up for email updates div#banner > nav#menu > div.newsletter > h4
div.newsletter > form.signupform > div.form-group > input.form-control div.newsletter > form.signupform > div.form-group > input.form-control
More news div.row > div.col-xs-12 > div#news-slider > a.more-news
#MC14 div.panel-body > h3.semi-bold500 > strong > a
div.newsletter > form.signupform > div.form-group > input.form-control div.newsletter > form.signupform > div.form-group > input.form-control

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
More  div.row > div.col-xs-12 > p > a.link-blue

These are opportunities to improve the legibility of your content.

Navigation

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
NEWS div.col-xs-12 > article.panel > div.panel-heading > h3.panel-title
#MC14 div.col-xs-12 > div.panel > div.panel-body > h3.semi-bold500
About WTO div.inset > div.row > div.col-xs-12 > h4

These are opportunities to improve keyboard navigation in your application.

○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
●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.
●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
●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.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[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
○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.
○Elements with visible text labels have matching accessible names.
○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.
77

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 / WarningSource
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
www.wto.org/library/authentication/jquery-1.11.2.min.js line 1, col 79777
SharedStorage
www.wto.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.wto.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.wto.org/cdn-cgi/challenge-platform/scripts/jsd/main.js

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
www.wto.org/library/authentication/jquery-1.11.2.min.js line 1, col 80624
Failed to load resource: the server responded with a status of 403 ()
www.wto.org/library/authentication/jquery-1.11.2.min.js line 1, col 82863
TypeError: e.indexOf is not a function at ce.fn.load (https://www.wto.org/library/authentication/jquery-1.11.2.min.js:2:82864) at https://www.wto.org/library/pf22_template/waypoints.min.js:8:7753 at https://www.wto.org/library/pf22_template/waypoints.min.js:8:269 at https://www.wto.org/library/pf22_template/waypoints.min.js:8:285 at https://www.wto.org/library/pf22_template/waypoints.min.js:8:7798

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.

URL
www.wto.org/library/photo_gallery/slideshow_data.js
www.wto.org/library/photo_gallery/slideshow_data.js
www.wto.org/library/flashvideo/flash_video_e.js
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
83

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.wto.org/english/thewto_e/vacan_e/recruit_e.htmhere
www.wto.org/english/thewto_e/thewto_e.htmMore

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div > div.row > a > img div > div.row > a > img
div.panel > div.row > div.col-xs-12 > img.img-responsive div.panel > div.row > div.col-xs-12 > img.img-responsive
ul.follow-wto > li.twitter > a > img ul.follow-wto > li.twitter > a > img

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

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

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