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

Audit breakdown by category with detailed findings.

56

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.itu.int/js/jquery-ui-1.8.16.min.js86400.0 s198.2 KiB
www.itu.int/js/jquery-1.6.4.min.js86400.0 s90.6 KiB
www.itu.int/js/itu-functions.js86400.0 s69.2 KiB
/ScriptResource.axd?d=u0dJMJBkSP4O90WEXjB8tUsWcB4BkV1jcwe...0.0 ms25.6 KiB
www.itu.int/en/PublishingImages/slider/2026/WTPF-26-registration-slider.jpg86400.0 s53.5 KiB
www.itu.int/en/PublishingImages/slider/2026/GICT26-Visual-slider.jpg86400.0 s42.3 KiB
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...86400.0 s41.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
www.itu.int/PublishingImages/masterpage/buttons/ITU-Buttons.png86400.0 s33.0 KiB
/ScriptResource.axd?d=FQlq4QX5WsTXFIgYiWTenUSIA9WRG0BOpnj...0.0 ms10.3 KiB
www.itu.int/Style%20Library/itu-main.css86400.0 s25.6 KiB
/en/PublishingImages/homepage-indepth/2026/itu-journal-un...86400.0 s23.9 KiB
www.itu.int/PublishingImages/masterpage/background/background-sprite.png86400.0 s21.2 KiB
static.hotjar.com/c/hotjar-768571.js?sv=660.0 s8.2 KiB
/en/PublishingImages/homepage-news-views/2026/AmateurRadi...86400.0 s19.1 KiB
/en/PublishingImages/homepage-indepth/2025/facts-and-figu...86400.0 s17.2 KiB
/en/PublishingImages/homepage-news-views/2026/bdt-highlig...86400.0 s16.3 KiB
/en/PublishingImages/homepage-top-corner-logo/2026/pp26-l...86400.0 s16.3 KiB
/WebResource.axd?d=fZBssSwBZyrTlT7jnnYJc7xzrAjctNoxqGfV-Q...0.0 ms6.5 KiB
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/pp26-4th-row.jpg86400.0 s12.0 KiB
www.itu.int/en/PublishingImages/slider/2026/artemis-video-slider.jpg86400.0 s11.9 KiB
www.itu.int/en/PublishingImages/home/footer-secretary-general.png86400.0 s11.3 KiB
cse.google.com/cse.js?cx=603416e14d8fe4ef60.0 ms4.2 KiB
/en/PublishingImages/homepage-news-views/2026/podcast-dig...86400.0 s10.3 KiB
www.itu.int/PublishingImages/masterpage/background/ITU-subnav-new2.png86400.0 s10.2 KiB
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/wtisd26-4th-row.jpg86400.0 s9.6 KiB
/en/PublishingImages/homepage-indepth/2026/AI-publication...86400.0 s8.8 KiB
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/wtpf26-4th-row.jpg86400.0 s7.3 KiB
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...86400.0 s5.7 KiB
www.itu.int/en/PublishingImages/slider/2026/WTPF-26-registration-slider1.jpg86400.0 s4.9 KiB
www.itu.int/en/PublishingImages/slider/2026/GICT26-Visual-slider2.jpg86400.0 s4.4 KiB
www.itu.int/Style%20Library/itu-base.css86400.0 s3.7 KiB
www.itu.int/PublishingImages/masterpage/background/rounded-grey-300.png86400.0 s3.1 KiB
www.itu.int/Style%20Library/ITU-Flexlistviewer.css86400.0 s2.7 KiB
www.google.com/cse/static/style/look/v6/default.css3000.0 s1.2 KiB
www.itu.int/PublishingImages/masterpage/buttons/joinitu-login-bg.png86400.0 s2.4 KiB
www.itu.int/PublishingImages/masterpage/background/body-top-bg-219x10.png86400.0 s2.4 KiB
www.itu.int/js/itu-own-functions.js86400.0 s2.3 KiB
static.addtoany.com/menu/page.js86400.0 s2.2 KiB
www.itu.int/en/PublishingImages/slider/2026/artemis-video-slider1.jpg86400.0 s2.1 KiB
www.itu.int/PublishingImages/masterpage/buttons/main-nav-bg.gif86400.0 s1.7 KiB
www.itu.int/PublishingImages/masterpage/icons/home-feature-active.png86400.0 s1.7 KiB
www.itu.int/Style%20Library/ms-rteCustom-ITUv6.css86400.0 s1.7 KiB
www.itu.int/PublishingImages/masterpage/buttons/linkedin-round.png86400.0 s1.6 KiB
www.itu.int/PublishingImages/masterpage/icons/large-blue-arrow.png86400.0 s1.6 KiB
www.itu.int/PublishingImages/masterpage/buttons/twitter-round.png86400.0 s1.6 KiB
www.itu.int/PublishingImages/masterpage/buttons/email-round.png86400.0 s1.5 KiB
www.itu.int/PublishingImages/masterpage/buttons/facebook-round.png86400.0 s1.5 KiB
/WebResource.axd?d=Ijg8dHGzYcEK7ifHOUDiwpxSHi6bCuFBNS5BJb...0.0 ms597 B
www.itu.int/PublishingImages/masterpage/icons/home.png86400.0 s1.3 KiB
www.itu.int/PublishingImages/masterpage/icons/more-arrow.png86400.0 s1.2 KiB
www.itu.int/PublishingImages/masterpage/icons/quicklinks-arrow.gif86400.0 s1.1 KiB
static.hotjar.com/c/hotjar-2692144.js?sv=760.0 s430 B

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.itu.int/fonts/DroidSerif-Regular-webfont.woff455 ms
www.itu.int/fonts/DroidSans-Bold-webfont.woff345 ms
script.hotjar.com/Roboto-Medium.ef8bb0.woff25.0 ms
script.hotjar.com/Roboto-Regular.422781.woff25.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:11.095 source:map[column:15124 line:2 type:source-location url:https://www.itu.int/js/jquery-1.6.4.min.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:37.137 source:map[type:text value:[unattributed]]] map[reflowTime:3.564 source:map[column:4126 line:3 type:source-location url:https://www.itu.int/js/jquery-1.6.4.min.js urlProvider:network]] map[reflowTime:0.381 source:map[column:231 line:15 type:source-location url:https://www.itu.int/js/jquery-ui-1.8.16.min.js urlProvider:network]] map[reflowTime:0.781 source:map[column:5139 line:3 type:source-location url:https://www.itu.int/js/jquery-1.6.4.min.js urlProvider:network]] map[reflowTime:4.698 source:map[column:2711 line:1 type:source-location url:https://www.itu.int/js/jquery-1.6.4.min.js urlProvider:network]] map[reflowTime:2.205 source:map[column:2725 line:1 type:source-location url:https://www.itu.int/js/jquery-1.6.4.min.js urlProvider:network]] map[reflowTime:2.085 source:map[column:189824 line:3 type:source-location url:https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js urlProvider:network]] map[reflowTime:12.32 source:map[column:190431 line:3 type:source-location url:https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js urlProvider:network]] map[reflowTime:5.844 source:map[column:280 line:386 type:source-location url:https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__en.js?usqp=CAM%3D urlProvider:network]] map[reflowTime:1.531 source:map[column:390 line:537 type:source-location url:https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__en.js?usqp=CAM%3D urlProvider:network]]]

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
amateur radio div.home-feature-item > div.hf-photo > a > img
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...40.7 KiB16.9 KiB
ITU Journal dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-image-indepth > a > img
/en/PublishingImages/homepage-indepth/2026/itu-journal-un...22.8 KiB14.8 KiB
PP 26 div.col-10 > div > a > img
/en/PublishingImages/homepage-top-corner-logo/2026/pp26-l...15.3 KiB14.0 KiB
Handbook Amateur Satellite service dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-image-newsviews > a > img
/en/PublishingImages/homepage-news-views/2026/AmateurRadi...18.1 KiB10.1 KiB
Facts and figures report 2025 dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-image-indepth > a > img
/en/PublishingImages/homepage-indepth/2025/facts-and-figu...16.1 KiB8.1 KiB
BDT highlights dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-image-newsviews > a > img
/en/PublishingImages/homepage-news-views/2026/bdt-highlig...15.3 KiB7.3 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:2772.405 label:Time to first byte subpart:timeToFirstByte] map[duration:1389.539 label:Resource load delay subpart:resourceLoadDelay] map[duration:460.829 label:Resource load duration subpart:resourceLoadDuration] map[duration:567.576 label:Element render delay subpart:elementRenderDelay]]
lhId: page-6-DIV
nodeLabel: Artemis II: Spectrum and ITU coding ​​Artemis II relies on spectrum protection…
path: 3,HTML,8,BODY,10,FORM,16,DIV,0,DIV,3,DIV,2,DIV,2,DIV,11,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV
selector: div.ms-webpart-chrome > div#WebPartctl00_SPWebPartManager1_g_246d1cec_ad62_4fc5_970c_5ee7a187f08b > div#ctl00_SPWebPartManager1_g_246d1cec_ad62_4fc5_970c_5ee7a187f08b > div.home-feature-wrap
snippet: <div class="home-feature-wrap">

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-6-DIV
nodeLabel: Artemis II: Spectrum and ITU coding ​​Artemis II relies on spectrum protection…
path: 3,HTML,8,BODY,10,FORM,16,DIV,0,DIV,3,DIV,2,DIV,2,DIV,11,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV
selector: div.ms-webpart-chrome > div#WebPartctl00_SPWebPartManager1_g_246d1cec_ad62_4fc5_970c_5ee7a187f08b > div#ctl00_SPWebPartManager1_g_246d1cec_ad62_4fc5_970c_5ee7a187f08b > div.home-feature-wrap
snippet: <div class="home-feature-wrap">

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.itu.int/js/jquery-ui-1.8.16.min.js198.2 KiB760 ms
www.itu.int/js/itu-own-functions.js2.3 KiB277 ms
www.itu.int/js/jquery-1.6.4.min.js90.6 KiB639 ms
www.itu.int/_layouts/15/init.js?rev=TzY%2Fm%2FOoPnHW9OQ41OjrYQ%3D%3DTAG082.6 KiB760 ms
www.itu.int/js/itu-functions.js69.2 KiB519 ms
/ScriptResource.axd?d=FQlq4QX5WsTXFIgYiWTenUSIA9WRG0BOpnj...10.3 KiB277 ms
www.itu.int/_layouts/15/blank.js?rev=whhv86DINHGWQe4GPtKl0A%3D%3DTAG01.0 KiB277 ms
/ScriptResource.axd?d=u0dJMJBkSP4O90WEXjB8tUsWcB4BkV1jcwe...25.6 KiB337 ms
www.itu.int/_layouts/15/theming.js?rev=SuLUbbwTXcxFWOWLFUsOkw%3D%3DTAG012.8 KiB277 ms
/_layouts/15/1033/initstrings.js?rev=GAkoVg6Sl%2Bo2hXf%2B...7.2 KiB398 ms
www.itu.int/Style%20Library/itu-main.css25.6 KiB458 ms
www.itu.int/Style%20Library/ms-rteCustom-ITUv6.css1.7 KiB398 ms
www.itu.int/Style%20Library/itu-base.css3.7 KiB398 ms
/_layouts/15/1033/styles/Themable/corev15.css?rev=UP2nlZL...48.6 KiB458 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
www.itu.int/en/Pages/default.aspxhttp/1.1
/_layouts/15/1033/styles/Themable/corev15.css?rev=UP2nlZL...http/1.1
/_layouts/15/1033/initstrings.js?rev=GAkoVg6Sl%2Bo2hXf%2B...http/1.1
www.itu.int/_layouts/15/init.js?rev=TzY%2Fm%2FOoPnHW9OQ41OjrYQ%3D%3DTAG0http/1.1
www.itu.int/_layouts/15/theming.js?rev=SuLUbbwTXcxFWOWLFUsOkw%3D%3DTAG0http/1.1
/ScriptResource.axd?d=u0dJMJBkSP4O90WEXjB8tUsWcB4BkV1jcwe...http/1.1
www.itu.int/_layouts/15/blank.js?rev=whhv86DINHGWQe4GPtKl0A%3D%3DTAG0http/1.1
/ScriptResource.axd?d=FQlq4QX5WsTXFIgYiWTenUSIA9WRG0BOpnj...http/1.1
www.itu.int/Style%20Library/itu-base.csshttp/1.1
www.itu.int/Style%20Library/itu-main.csshttp/1.1
www.itu.int/js/jquery-1.6.4.min.jshttp/1.1
www.itu.int/js/jquery-ui-1.8.16.min.jshttp/1.1
www.itu.int/js/itu-functions.jshttp/1.1
www.itu.int/js/itu-own-functions.jshttp/1.1
www.itu.int/Style%20Library/ms-rteCustom-ITUv6.csshttp/1.1
www.itu.int/_layouts/15/images/spcommon.png?rev=43http/1.1
/WebResource.axd?d=fZBssSwBZyrTlT7jnnYJc7xzrAjctNoxqGfV-Q...http/1.1
www.itu.int/PublishingImages/masterpage/logos/ITU-logo.svghttp/1.1
/en/PublishingImages/homepage-top-corner-logo/2026/pp26-l...http/1.1
/WebResource.axd?d=Ijg8dHGzYcEK7ifHOUDiwpxSHi6bCuFBNS5BJb...http/1.1
www.itu.int/PublishingImages/masterpage/buttons/facebook-round.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/buttons/twitter-round.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/buttons/linkedin-round.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/buttons/email-round.pnghttp/1.1
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...http/1.1
www.itu.int/en/PublishingImages/slider/2026/artemis-video-slider.jpghttp/1.1
www.itu.int/en/PublishingImages/slider/2026/GICT26-Visual-slider.jpghttp/1.1
www.itu.int/en/PublishingImages/slider/2026/WTPF-26-registration-slider.jpghttp/1.1
www.itu.int/PublishingImages/masterpage/icons/home-feature-active.pnghttp/1.1
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...http/1.1
www.itu.int/en/PublishingImages/slider/2026/artemis-video-slider1.jpghttp/1.1
www.itu.int/en/PublishingImages/slider/2026/GICT26-Visual-slider2.jpghttp/1.1
www.itu.int/en/PublishingImages/slider/2026/WTPF-26-registration-slider1.jpghttp/1.1
www.itu.int/Style%20Library/ITU-Flexlistviewer.csshttp/1.1
/en/PublishingImages/homepage-news-views/2026/AmateurRadi...http/1.1
/en/PublishingImages/homepage-news-views/2026/bdt-highlig...http/1.1
/en/PublishingImages/homepage-news-views/2026/podcast-dig...http/1.1
/en/PublishingImages/homepage-indepth/2025/facts-and-figu...http/1.1
/en/PublishingImages/homepage-indepth/2026/AI-publication...http/1.1
/en/PublishingImages/homepage-indepth/2026/itu-journal-un...http/1.1
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/wtisd26-4th-row.jpghttp/1.1
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/wtpf26-4th-row.jpghttp/1.1
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/pp26-4th-row.jpghttp/1.1
www.itu.int/en/PublishingImages/home/footer-secretary-general.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/background/body-top-bg-219x10.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/buttons/main-nav-bg.gifhttp/1.1
www.itu.int/PublishingImages/masterpage/icons/home.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/background/ITU-subnav-new2.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/buttons/joinitu-login-bg.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/background/background-sprite.pnghttp/1.1
www.itu.int/fonts/DroidSans-Bold-webfont.woffhttp/1.1
www.itu.int/fonts/DroidSerif-Regular-webfont.woffhttp/1.1
www.itu.int/en/_api/SP.Web.GetContextWebThemeData?lcid=1033http/1.1
www.itu.int/PublishingImages/masterpage/background/rounded-grey-300.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/icons/quicklinks-arrow.gifhttp/1.1
www.itu.int/PublishingImages/masterpage/icons/more-arrow.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/buttons/ITU-Buttons.pnghttp/1.1
www.itu.int/PublishingImages/masterpage/icons/large-blue-arrow.pnghttp/1.1
www.itu.int/_layouts/15/1033/strings.js?rev=9xQH1OfeylBi9JTCbkHLUQ%3D%3DTAG0http/1.1
www.itu.int/_layouts/15/core.js?rev=ZDqG1yirPiaXxf0KNWhHeQ%3D%3DTAG0http/1.1
www.itu.int/_layouts/15/mquery.js?rev=jL3pSyr14DJ%2BBzxX%2FO8UOA%3D%3DTAG0http/1.1
www.itu.int/_layouts/15/sp.init.js?rev=4WGKMHphnRAirWcCwo3A5Q%3D%3DTAG0http/1.1
www.itu.int/_layouts/15/sp.core.js?rev=OgufKqhYdMBFaXKypwK%2BkA%3D%3DTAG0http/1.1
www.itu.int/PublishingImages/masterpage/logos/itu-favicon.icohttp/1.1

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

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: 2.2 s
URLTime Spent
itu.int/792 ms
www.itu.int/833 ms
www.itu.int/Pages/VariationRoot.aspx279 ms
www.itu.int/en279 ms
www.itu.int/en/Pages/default.aspx0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 801 ms
URLTime Spent
www.itu.int/en/Pages/default.aspx901 ms

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

Diagnostics

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: 450 ms 751.1 KiB
URLTransfer SizeEst Savings
www.itu.int/js/jquery-ui-1.8.16.min.js197.1 KiB179.3 KiB
www.itu.int/_layouts/15/core.js?rev=ZDqG1yirPiaXxf0KNWhHeQ%3D%3DTAG0129.2 KiB117.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-M2LC5X5143.0 KiB65.4 KiB
www.googletagmanager.com/gtag/js?id=G-T69008QZXS&cx=c&gtm=4e64h1161.1 KiB64.9 KiB
www.googletagmanager.com/gtag/js?id=UA-121074739-1115.7 KiB63.7 KiB
www.itu.int/_layouts/15/init.js?rev=TzY%2Fm%2FOoPnHW9OQ41OjrYQ%3D%3DTAG081.9 KiB56.7 KiB
/cse/static/element/dc329f57de078f5d/cse_element__en.js?u...102.7 KiB51.9 KiB
www.itu.int/js/jquery-1.6.4.min.js89.5 KiB46.8 KiB
www.itu.int/js/itu-functions.js68.1 KiB31.6 KiB
cse.google.com/adsense/search/async-ads.js43.3 KiB31.5 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js56.1 KiB21.6 KiB
script.hotjar.com/survey-v2.8b9993fd273bc1f4ea37.js60.6 KiB20.0 KiB

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
The page has an unload handler in the main frame.Actionable
Pages with WebSocket cannot enter back/forward cache.Pending browser support

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 27.2 KiB
URLTransfer SizeEst Savings
www.itu.int/Style%20Library/itu-main.css25.6 KiB12.8 KiB
/_layouts/15/1033/styles/Themable/corev15.css?rev=UP2nlZL...48.6 KiB11.1 KiB
www.google.com/cse/static/element/dc329f57de078f5d/default_v6+en.css12.0 KiB3.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 20.2 KiB
URLTransfer SizeEst Savings
www.itu.int/js/itu-functions.js68.1 KiB17.6 KiB
inline: let originalTextNodes = null; functi…7.4 KiB2.6 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: 0.0 ms 32.8 KiB
URLTransfer SizeEst Savings
www.itu.int/Style%20Library/itu-main.css24.5 KiB21.9 KiB
www.google.com/cse/static/element/dc329f57de078f5d/default_v6+en.css11.9 KiB10.9 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
amateur radio div.home-feature-item > div.hf-photo > a > img
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...
WTISD div > div.home-block-content > a > img
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/wtisd26-4th-row.jpg
WTPF-26 div > div.home-block-content > a > img
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/wtpf26-4th-row.jpg
PP-26 div.ms-rtestate-field > div.home-block-content > a > img
www.itu.int/en/PublishingImages/homepage-4th-row-box/2026/pp26-4th-row.jpg
Handbook Amateur Satellite service dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-image-newsviews > a > img
/en/PublishingImages/homepage-news-views/2026/AmateurRadi...
BDT highlights dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-image-newsviews > a > img
/en/PublishingImages/homepage-news-views/2026/bdt-highlig...
podcast dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-image-newsviews > a > img
/en/PublishingImages/homepage-news-views/2026/podcast-dig...
Facts and figures report 2025 dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-image-indepth > a > img
/en/PublishingImages/homepage-indepth/2025/facts-and-figu...
AI publications dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-image-indepth > a > img
/en/PublishingImages/homepage-indepth/2026/AI-publication...
ITU Journal dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-image-indepth > a > img
/en/PublishingImages/homepage-indepth/2026/itu-journal-un...
PP 26 div.col-10 > div > a > img
/en/PublishingImages/homepage-top-corner-logo/2026/pp26-l...
Amateur Radio ul.clearfix > li.activeSlide > a > img
/en/PublishingImages/slider/2026/AmateurRadio_AdobeStock_...
Artemis ul.clearfix > li > a > img
www.itu.int/en/PublishingImages/slider/2026/artemis-video-slider1.jpg
GICT ul.clearfix > li > a > img
www.itu.int/en/PublishingImages/slider/2026/GICT26-Visual-slider2.jpg
WTPF-26 ul.clearfix > li > a > img
www.itu.int/en/PublishingImages/slider/2026/WTPF-26-registration-slider1.jpg

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

●Max Potential First Input Delay 100 ms
●Layout shift culprits
●Optimize DOM size
●Optimize viewport for mobile
●Avoids enormous network payloads Total size was 2,321 KiB
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.5 s
●Minimizes main-thread work 1.2 s
●Avoid long main-thread tasks 3 long tasks found
●Network Requests
●Network Round Trip Times 210 ms
●Server Backend Latencies 210 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○Avoid non-composited animations
89

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
Handbook: Amateur and amateur-satellite services​​ dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-textarea-newsviews > p > a
 Action, progress and impact in digital development​​​ dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-textarea-newsviews > p > a
From Digital skills to growth: Women-led SMEs in Nigeria​​​ dt.flexviewerMainDivDT-newsviews > div.flexviewerMainDivDT-textarea-newsviews > p > a
Facts and Figures 2025​​​ dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-textarea-indepth > p > a
Latest AI for Good publications​ dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-textarea-indepth > p > a
ITU Journal: Enhanced underwater communications​ dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-textarea-indepth > p > a
Feedback div.css-sfbnep > div.css-112xj8j > button#hj-survey-toggle-1 > span.css-1qk2dqd

These are opportunities to improve the legibility of your content.

Tables and lists

When definition lists are not properly marked up, screen readers may produce confusing or inaccurate output. Learn how to structure definition lists correctly.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
​Handbook: Amateur and amateur-satellite services​​ div#WebPartctl00_SPWebPartManager1_g_ad916b9a_709b_40d9_a89e_b35f4cc90486 > div#ctl00_SPWebPartManager1_g_ad916b9a_709b_40d9_a89e_b35f4cc90486 > div.flexviewerMainDiv-newsviews > dl.flexviewerMainDivDL-newsviews
​ Action, progress and impact in digital development​​​ div#WebPartctl00_SPWebPartManager1_g_ad916b9a_709b_40d9_a89e_b35f4cc90486 > div#ctl00_SPWebPartManager1_g_ad916b9a_709b_40d9_a89e_b35f4cc90486 > div.flexviewerMainDiv-newsviews > dl.flexviewerMainDivDL-newsviews
​From Digital skills to growth: Women-led SMEs in Nigeria​​​ div#WebPartctl00_SPWebPartManager1_g_ad916b9a_709b_40d9_a89e_b35f4cc90486 > div#ctl00_SPWebPartManager1_g_ad916b9a_709b_40d9_a89e_b35f4cc90486 > div.flexviewerMainDiv-newsviews > dl.flexviewerMainDivDL-newsviews
Facts and Figures 2025​​​ div#WebPartctl00_SPWebPartManager1_g_fbb63ac0_ea34_4c3a_bc78_75ae515494ed > div#ctl00_SPWebPartManager1_g_fbb63ac0_ea34_4c3a_bc78_75ae515494ed > div.flexviewerMainDiv-indepth > dl.flexviewerMainDivDL-indepth
​​Latest AI for Good publications​ div#WebPartctl00_SPWebPartManager1_g_fbb63ac0_ea34_4c3a_bc78_75ae515494ed > div#ctl00_SPWebPartManager1_g_fbb63ac0_ea34_4c3a_bc78_75ae515494ed > div.flexviewerMainDiv-indepth > dl.flexviewerMainDivDL-indepth
​​​​ITU Journal: Enhanced underwater communications​​​ ​ div#WebPartctl00_SPWebPartManager1_g_fbb63ac0_ea34_4c3a_bc78_75ae515494ed > div#ctl00_SPWebPartManager1_g_fbb63ac0_ea34_4c3a_bc78_75ae515494ed > div.flexviewerMainDiv-indepth > dl.flexviewerMainDivDL-indepth

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

Best practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Facts and Figures 2025​​​ dt.flexviewerMainDivDT-indepth > div.flexviewerMainDivDT-textarea-indepth > p > a

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

○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
●Form elements have associated labels
●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
●Definition list items are wrapped in `<dl>` elements
●Document has a `<title>` element
●`<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
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[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
○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">`
○`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`<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.
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
Unload event listeners are deprecated and will be removed.
www.itu.int/_layouts/15/init.js?rev=TzY%2Fm%2FOoPnHW9OQ41OjrYQ%3D%3DTAG0

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
s7.addthis.com/js/300/addthis_widget.js#pubid=iturss
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
●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
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
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
/women-and-girls/girls-in-ict/international-girls-in-ict-...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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