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Lighthouse Desktop

· 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.

76

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.

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:64.434 source:map[column:156 line:8 type:source-location url:https://www.icao.int/sites/default/files/js/js_XpGo-7YnhWYD3bY-9f3n3Hr1vsXkkqzwci3L6cI2qBc.js?scope=footer&delta=1&language=en&theme=icao&include=eJxdjksOwyAMRC8EYdXzVMMnlMTBEThquX1pEyltFh69eZYsw3th5GZwwDAWzqIss1QpWG_mRD1VTZBQRUXmSOEuiCb2uPYBE17_clHJgY1D8f1I4012EYktSFdplHLc3YOXcJLO4Vl_6ucZCTE5HRl0bCjZgtI0-CIqJTfvqqMPRVvkHIqaCYXNN1VdsfTJhu24VdfPvwH3-2rX 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:52.997 source:map[type:text value:[unattributed]]] map[reflowTime:12.953 source:map[column:77290 line:1 type:source-location url:https://www.icao.int/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.1 urlProvider:network]] map[reflowTime:47.046 source:map[column:45509 line:1 type:source-location url:https://www.icao.int/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.1 urlProvider:network]] map[reflowTime:0.84 source:map[column:46313 line:1 type:source-location url:https://www.icao.int/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.1 urlProvider:network]] map[reflowTime:3.009 source:map[column:45531 line:1 type:source-location url:https://www.icao.int/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.1 urlProvider:network]] map[reflowTime:0.586 source:map[column:52564 line:0 type:source-location url:https://www.icao.int/libraries/klaro/dist/klaro-no-translations-no-css.js?tdl11c 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
AAM2026 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...1.6 MiB1.5 MiB
ATFM2026 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...1.2 MiB1.1 MiB
GISS2026 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...1.0 MiB975.0 KiB
TRIP2026 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...825.6 KiB744.9 KiB
Secondment Opportunities div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...646.0 KiB565.2 KiB
ICAOTV div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...580.3 KiB499.6 KiB
Roster of Experts div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...538.4 KiB457.7 KiB
CALAF2026 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...447.4 KiB366.7 KiB
Cairo Mission div.featured-card > div.card-img > picture > img.img-fluid
/sites/default/files/styles/home_news_fallback/public/202...246.3 KiB211.5 KiB
Read our latest ICAO featured articles a.img-fluid > div.lanscape-card-img > picture > img.img-fluid
/sites/default/files/styles/home_featured_general_fallbac...197.8 KiB166.1 KiB
GISS 2026 Concludes with Global Commitments to Strengthen Aviation Implementati… div.featured-card > div.card-img > picture > img.img-fluid
/sites/default/files/styles/home_news_bottom_fallback/pub...155.3 KiB141.8 KiB
Twenty-two countries support ICAO Call to Action on priorities for global aviat… div.featured-card > div.card-img > picture > img.img-fluid
/sites/default/files/styles/home_news_bottom_fallback/pub...152.7 KiB139.1 KiB
No Country Left Behind a > div.card-contents > div.card-icon > img
www.icao.int/sites/default/files/2025-09/GOAL-4.png110.8 KiB110.7 KiB
United Kingdom announces voluntary contribution to support global aviation deve… div.featured-card > div.card-img > picture > img.img-fluid
/sites/default/files/styles/home_news_bottom_fallback/pub...117.0 KiB103.5 KiB
Every Flight is Safe and Secure a > div.card-contents > div.card-icon > img
www.icao.int/sites/default/files/2025-09/GOAL-1.png103.5 KiB103.4 KiB
Cairo Mission div.featured-card > div.card-img > picture > img.img-fluid
/sites/default/files/styles/home_news_bottom_fallback/pub...116.0 KiB102.5 KiB
The International Civil Aviation Convention and Other Treaties, Laws and Regula… a > div.card-contents > div.card-icon > img
www.icao.int/sites/default/files/2025-09/GOAL-5.png102.2 KiB102.1 KiB
Aviation Delivers Seamless, Accessible, and Reliable Mobility for All a > div.card-contents > div.card-icon > img
www.icao.int/sites/default/files/2025-09/GOAL-3.png101.4 KiB101.3 KiB
ATConf7 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...181.1 KiB100.4 KiB
Aviation is Environmentally Sustainable a > div.card-contents > div.card-icon > img
www.icao.int/sites/default/files/2025-09/GOAL-2_0.png78.8 KiB78.7 KiB
The Economic Development of Air Transport Assures the Delivery of Economic Pros… a > div.card-contents > div.card-icon > img
www.icao.int/sites/default/files/2025-09/GOAL-6.png60.2 KiB60.1 KiB
Climate Week 2026 div.banner-img > a > picture > img.img-fluid
/sites/default/files/styles/home_banner_slide_fallback/pu...64.4 KiB27.5 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-2-IMG
nodeLabel: GISS2026
path: 1,HTML,1,BODY,2,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,SPAN,0,DIV,0,DIV,0,A,0,PICTURE,3,IMG
selector: div.banner-img > a > picture > img.img-fluid
snippet: <img loading="lazy" width="1920" height="474" src="/sites/default/files/styles/home_banner_slide_fallback/public/2025-10/2026…" alt="GISS2026" class="img-fluid">

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.

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
static.addtoany.com/menu/page.js86400.0 s2.2 KiB

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: 272 ms
URLTime Spent
icao.int/272 ms
www.icao.int/0.0 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 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: 40 ms 53.7 KiB
URLTransfer SizeEst Savings
/sites/default/files/css/css_eRCDdTzx0YcvVspAPPgvkJTVZ3N3...58.8 KiB53.7 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: 130 ms 66.1 KiB

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

Max Potential First Input Delay 110 ms
Layout shift culprits
Optimize DOM size
Font display
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
JavaScript execution time 0.2 s
Minimizes main-thread work 0.9 s
Avoid long main-thread tasks 1 long task found
Avoid non-composited animations 12 animated elements found
Image elements have explicit `width` and `height`
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 20 ms
Server Backend Latencies 20 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 370 ms
Avoid large layout shifts 2 layout shifts found
INP breakdown
User Timing marks and measures
97

Accessibility

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

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 > div.card-item > div.featured-card > a.card-link-wrap div > div.card-item > div.featured-card > a.card-link-wrap
div > div.card-item > div.featured-card > a.card-link-wrap div > div.card-item > div.featured-card > a.card-link-wrap
div > div.card-item > div.featured-card > a.card-link-wrap div > div.card-item > div.featured-card > a.card-link-wrap
div > div.card-item > div.featured-card > a.card-link-wrap div > div.card-item > div.featured-card > a.card-link-wrap

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.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
Input buttons have discernible text.
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
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
`<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.
`[lang]` attributes have a valid value
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
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
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
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 type="image">` elements have `[alt]` text
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.
`<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
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.
100

Best Practices

Uses HTTPS
Avoids deprecated APIs
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
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
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.

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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