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
swi.reco.ebu.io/static/index-ZctoY9Q1.js	0.0 ms	192.1 KiB
privacy-proxy.usercentrics.eu/latest/uc-block.bundle.js	3600.0 s	30.5 KiB
web.cmp.usercentrics.eu/ui/TvGdprCmpView.f15b9a90.js	3600.0 s	29.6 KiB
swi.reco.ebu.io/static/index-eCMRbsRk.css	0.0 ms	18.0 KiB
web.cmp.usercentrics.eu/ui/loader.js	3600.0 s	15.4 KiB
survey.survicate.com/workspaces/b601b1528c6e781d400658696eb40d49/web_surveys.js	300.0 s	9.2 KiB
sibforms.com/forms/end-form/build/sib-styles.css	14400.0 s	9.8 KiB
swi.reco.ebu.io/static/patterns-gdGQMHaC.js	0.0 ms	3.8 KiB
swi.reco.ebu.io/static/react-C42HpHNH.js	0.0 ms	3.7 KiB
reco.ebu.io/news-reco-swi.js	0.0 ms	3.2 KiB
swi.reco.ebu.io/static/preload-helper-BMQ6cNpg.js	0.0 ms	1.2 KiB
swi.reco.ebu.io/themes/swi/default.css	0.0 ms	1.0 KiB
app.usercentrics.eu/session/1px.png?settingsId=9vLkrmw-3	1800.0 s	826 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:0.108707] map[node:map[boundingRect:map[bottom:15285 height:15084 left:0 right:412 top:201 width:412] lhId:page-4-DIV nodeLabel:SWISS ABROAD The information hub for the Swiss community abroad Go to: Swiss ab… path:1,HTML,1,BODY,6,DIV selector:body.home > div#main-content snippet:<div id="main-content" class="content-container"> type:node] score:0.092888] map[node:map[boundingRect:map[bottom:15261 height:15060 left:10 right:402 top:201 width:392] lhId:page-6-DIV nodeLabel:SWISS ABROAD The information hub for the Swiss community abroad Go to: Swiss ab… path:1,HTML,1,BODY,6,DIV,0,MAIN,0,DIV selector:body.home > div#main-content > main.container-max-width-aware > div.page-main snippet:<div class="page-main content-area container-full-width-aware container-vertical-flow-…"> type:node] score:0.015819 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:5976 height:188 left:10 right:402 top:5788 width:392] lhId:page-0-IMG nodeLabel:div#swiss-2697358196 > div#swiss-4218392898 > a.a2t-link > img path:1,HTML,1,BODY,6,DIV,0,MAIN,0,DIV,8,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div#swiss-2697358196 > div#swiss-4218392898 > a.a2t-link > img snippet:<img decoding="async" src="https://www.swissinfo.ch/content/wp-content/uploads/sites/13/2026/02/SWIpl…" alt="" width="1000"> 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.

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:12.034 source:map[column:99905 line:1 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b 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:6.454 source:map[column:97998 line:0 type:source-location url:https://privacy-proxy.usercentrics.eu/latest/uc-block.bundle.js urlProvider:network]] map[reflowTime:15.228 source:map[column:210503 line:0 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b urlProvider:network]] map[reflowTime:7.283 source:map[column:95489 line:0 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b urlProvider:network]] map[reflowTime:0.431 source:map[column:204606 line:0 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b urlProvider:network]] map[reflowTime:0.405 source:map[column:100659 line:0 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b urlProvider:network]] map[reflowTime:0.078 source:map[column:60994 line:0 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b urlProvider:network]] map[reflowTime:12.034 source:map[column:101037 line:0 type:source-location url:https://www.swissinfo.ch/eng/wp-content/themes/swissinfo-theme/assets/frontend.js?ver=3c4d6ad917931391616b urlProvider:network]] map[reflowTime:5.293 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#swiss-2697358196 > div#swiss-4218392898 > a.a2t-link > img `div#swiss-2697358196 > div#swiss-4218392898 > a.a2t-link > img`	/content/wp-content/uploads/sites/13/2026/02/SWIplus_bann...	125.6 KiB	113.9 KiB
SWI swissinfo.ch `div#uc-main-dialog > div#main-view > header.has-custom-logo > img.logo`	www.swissinfo.ch/content/wp-content/uploads/sites/13/2024/01/swi_logo_696.png	28.5 KiB	28.1 KiB
People are carrying out renovation work on drystone walls in the Muota Valley, … `article.teaser-card > figure.teaser-figure > picture > img`	/content/wp-content/uploads/sites/13/2026/03/378439544_hi...	58.2 KiB	21.8 KiB
Boys playing football/soccer near damaged housing in occupied West Bank. `article.teaser-hero > figure.teaser-figure > picture > img`	/content/wp-content/uploads/sites/13/2026/04/658908463_hi...	55.6 KiB	19.2 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:3002.745 label:Time to first byte subpart:timeToFirstByte] map[duration:21.269 label:Resource load delay subpart:resourceLoadDelay] map[duration:27.306 label:Resource load duration subpart:resourceLoadDuration] map[duration:306.686 label:Element render delay subpart:elementRenderDelay]]

lhId: page-3-IMG

nodeLabel: Boys playing football/soccer near damaged housing in occupied West Bank.

path: 1,HTML,1,BODY,6,DIV,0,MAIN,0,DIV,1,DIV,0,DIV,0,ARTICLE,3,FIGURE,0,PICTURE,1,IMG

selector: article.teaser-hero > figure.teaser-figure > picture > img

snippet: <img src="https://www.swissinfo.ch/content/wp-content/uploads/sites/13/2026/04/65890…" width="1300" height="867" alt="Boys playing football/soccer near damaged housing in occupied West Bank." loading="eager" decoding="sync" fetchpriority="high">

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

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

value: No additional origins are good candidates for preconnecting

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
sibforms.com/forms/end-form/build/sib-styles.css	9.8 KiB	825 ms
/eng/_static/??-eJyNj9EKwjAMRX/ILgxk0wfxW+oaRkqb1iab7O+ts...	37.8 KiB	301 ms
/eng/_static/??-eJydjUsOwjAMRC9EsCqhRl0gzuLGLlhK3ChO6PUbi...	37.0 KiB	602 ms
/eng/wp-includes/css/dist/block-library/style.min.css?m=1...	15.5 KiB	452 ms
/eng/_static/??-eJyVjUsKg0AQRC+UsRGC4iLkLOPY0SY9H6ZaNLfPE...	15.3 KiB	301 ms

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: 1.7 s

URL	Time Spent
swissinfo.ch/	753 ms
www.swissinfo.ch/	758 ms
www.swissinfo.ch/eng	151 ms
www.swissinfo.ch/eng/	0.0 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: 2.2 s

URL	Time Spent
www.swissinfo.ch/eng/	2.3 s

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
SWISS ABROAD The information hub for the Swiss community abroad Go to: Swiss ab… `body.home > div#main-content`	0.093
SWISS ABROAD The information hub for the Swiss community abroad Go to: Swiss ab… `body.home > div#main-content > main.container-max-width-aware > div.page-main`	0.016

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.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 450 ms 105.6 KiB

URL	Transfer Size	Est Savings
/eng/_static/??-eJydjUsOwjAMRC9EsCqhRl0gzuLGLlhK3ChO6PUbi...	36.9 KiB	31.4 KiB
.sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0; … } …	28.1 KiB	28.0 KiB
.overlay { --color-cmp-overlay: #333333; --feature-overlay-opacity: 0.7; } …	18.5 KiB	16.2 KiB
/eng/wp-includes/css/dist/block-library/style.min.css?m=1...	15.2 KiB	15.2 KiB
/eng/_static/??-eJyVjUsKg0AQRC+UsRGC4iLkLOPY0SY9H6ZaNLfPE...	15.1 KiB	14.8 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: 150 ms 481.0 KiB

URL	Transfer Size	Est Savings
/eng/wp-content/themes/swissinfo-theme/assets/pillarbox.u...	217.4 KiB	188.3 KiB
surveys-static-prd.survicate-cdn.com/widget_core-28.23.14.js	160.2 KiB	78.0 KiB
www.googletagmanager.com/gtag/js?id=G-LHZLTNFJ0B	174.1 KiB	66.7 KiB
/eng/wp-content/themes/swissinfo-theme/assets/frontend.js...	74.7 KiB	54.1 KiB
/eng/_static/??-eJydkdFuwyAMRX9oFFWamu1h2rdQcCqngBk2qdKvH...	70.1 KiB	38.0 KiB
web.cmp.usercentrics.eu/ui/v/3.116.0/WebSdk.lib.d00a93b7.js	56.0 KiB	35.4 KiB
/eng/_static/??-eJyNj9EKwjAMRX/ILgxk0wfxW+oaRkqb1iab7O+ts...	37.6 KiB	20.5 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.swissinfo.ch/eng/	2.5 s	77 ms	176 ms
privacy-proxy.usercentrics.eu/latest/uc-block.bundle.js	1.0 s	852 ms	9.3 ms
Unattributable	656 ms	98 ms	0.0 ms
/eng/wp-content/themes/swissinfo-theme/assets/frontend.js...	564 ms	350 ms	23 ms
www.googletagmanager.com/gtag/js?id=G-LHZLTNFJ0B	370 ms	304 ms	53 ms
surveys-static-prd.survicate-cdn.com/widget_core-28.23.14.js	343 ms	261 ms	66 ms
web.cmp.usercentrics.eu/ui/v/3.116.0/GdprCmpController.c4576b71.js	207 ms	144 ms	3.7 ms
/eng/_static/??-eJyNj9EKwjAMRX/ILgxk0wfxW+oaRkqb1iab7O+ts...	180 ms	119 ms	10 ms
web.cmp.usercentrics.eu/ui/v/3.116.0/UcGdprCmpView.b05dbc41.js	157 ms	45 ms	5.5 ms
/eng/wp-content/themes/swissinfo-theme/assets/pillarbox.u...	133 ms	63 ms	67 ms
js-agent.newrelic.com/nr-rum-1.313.1.min.js	131 ms	97 ms	5.9 ms
/eng/wp-content/client-mu-plugins/vendor/inpsyde/swissinf...	117 ms	99 ms	13 ms
/eng/_static/??-eJydkdFuwyAMRX9oFFWamu1h2rdQcCqngBk2qdKvH...	108 ms	51 ms	26 ms
web.cmp.usercentrics.eu/ui/v/3.116.0/WebSdk.lib.d00a93b7.js	78 ms	47 ms	30 ms
web.cmp.usercentrics.eu/ui/v/3.116.0/getToastifyStyle.4f0a73d7.js	69 ms	68 ms	0.5 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	2.7 s
Other	1.6 s
Style & Layout	864 ms
Rendering	727 ms
Script Parsing & Compilation	511 ms
Parse HTML & CSS	257 ms
Garbage Collection	74 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 14.6 KiB

URL	Transfer Size	Est Savings
/eng/_static/??-eJydkdFuwyAMRX9oFFWamu1h2rdQcCqngBk2qdKvH...	70.3 KiB	14.6 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
www.swissinfo.ch/eng/	528.5 KiB
/eng/wp-content/themes/swissinfo-theme/assets/pillarbox.u...	218.9 KiB
swi.reco.ebu.io/static/index-ZctoY9Q1.js	192.1 KiB
www.googletagmanager.com/gtag/js?id=G-LHZLTNFJ0B	174.5 KiB
surveys-static-prd.survicate-cdn.com/widget_core-28.23.14.js	161.3 KiB
/content/wp-content/uploads/sites/13/2026/02/SWIplus_bann...	126.0 KiB
cdn.jsdelivr.net/npm/c2pa@0.17.2/+esm	82.8 KiB
/eng/wp-content/themes/swissinfo-theme/assets/frontend.js...	75.0 KiB
/eng/_static/??-eJydkdFuwyAMRX9oFFWamu1h2rdQcCqngBk2qdKvH...	70.5 KiB
/eng/wp-content/themes/swissinfo-theme/assets/aktivgrotes...	59.3 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#swiss-2697358196 > div#swiss-4218392898 > a.a2t-link > img `div#swiss-2697358196 > div#swiss-4218392898 > a.a2t-link > img`	/content/wp-content/uploads/sites/13/2026/02/SWIplus_bann...

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

●Optimize DOM size

●Font display

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 5 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 30 ms

●Server Backend Latencies 560 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

○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

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.page-main > div.ebu-news-feed > div.ebu-news-feed__widget > iframe#reco2a78fe50-6ade-4199-acda-9fe7ddc6cfa8 `div.page-main > div.ebu-news-feed > div.ebu-news-feed__widget > iframe#reco2a78fe50-6ade-4199-acda-9fe7ddc6cfa8`

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.

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
Middle East conflict `div.page-main > div.teaser-card-carousel > div.caption > a.caption__link`
Global trade war `div.page-main > div.teaser-card-carousel > div.caption > a.caption__link`

These items highlight common accessibility best practices.

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
EN `div.header-container__grid > div.header-aside > div.header-language-navigation-action > button#language-navigation-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.

●Select elements have associated label elements.

●`[accesskey]` values are unique

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

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

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

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

●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

●Links have a discernible name

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

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

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

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○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

○`<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

○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.

○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

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Displayed size	Actual size	Expected size
SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR `div.temp-sticky-banner__wrapper > div.temp-sticky-banner__content > a.temp-sticky-banner__image > img`	/eng/wp-content/themes/swissinfo-theme/assets/srg-ssr-sma...	90 x 30	90 x 30	135 x 45

General

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
/eng/wp-content/themes/swissinfo-theme/assets/pillarbox.u...
www.swissinfo.ch/eng/

●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

●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 clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

100

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 have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`