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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.

55

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
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/LYX52JSEaObEL0uEii/VzsYMAE/...21600.0 s180.1 KiB
tagman.britishairways.com/britishairways/nexus-prod/Bootstrap.js300.0 s119.1 KiB
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/tbX52JSEaObE/GkghMAE/bD5LE0...21600.0 s162.2 KiB
/is/image/ba/downtown-cityscape-boston-massachusetts?wid=...17568.0 s137.9 KiB
/is/image/ba/adults-walking-brooklyn-new-york-3?wid=1200&...30231.0 s81.5 KiB
/is/image/ba/terrace-houses-nottinghill-london?wid=1200&h...20651.0 s53.7 KiB
/is/image/ba/harbour-boats-morocco-rabat?wid=400&hei=420&...11655.0 s46.4 KiB
/is/image/ba/adult-view-marshalls-beach-golden-gate?wid=1...17631.0 s46.9 KiB
/is/image/ba/first-lounge-speedmarque-logo-gatwick?wid=40...8990.0 s38.0 KiB
/is/image/ba/south-west-coast-path-sea-cliffs-coastline-n...30160.0 s42.0 KiB
/is/image/ba/adult-boat-sunset-statue-liberty-NewYork?wid...17568.0 s21.9 KiB
/is/image/ba/club-world-customer-relaxing-headphones-busi...24556.0 s20.3 KiB
/is/image/ba/mototok-pushback-babw-a320-heathrow-12?wid=4...11655.0 s18.0 KiB
/is/image/ba/world-traveller-plus-customer-boeing-787-pre...11655.0 s10.2 KiB
www.britishairways.com/akam/13/3c96b06b21600.0 s9.5 KiB
s.go-mpulse.net/boomerang/93U6S-JS5E3-HQLJ8-98G8C-NNRXF604800.0 s56.4 KiB

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:0.140238] map[score:0.055035] map[node:map[boundingRect:map[bottom:1216 height:474 left:19 right:1331 top:742 width:1312] lhId:page-4-SECTION nodeLabel:Rechercher des options de vol Vols Vol + Hôtel Vol + Voiture Multi-villes Trouv… path:1,HTML,1,BODY,0,DIV,0,SECTION,0,MAIN,5,SECTION selector:div#__next > section.flex > main#main > section.w-full snippet:<section class="w-full z-10 lg:max-w-[1312px] max-[1344px]:px-4 mx-auto mt-[-215px]" data-testid="flight-search-section-body" role="search"> type:node] score:0.033151] map[score:0.029467] map[score:0.008881] map[node:map[boundingRect:map[bottom:1216 height:474 left:19 right:1331 top:742 width:1312] lhId:page-4-SECTION nodeLabel:Rechercher des options de vol Vols Vol + Hôtel Vol + Voiture Multi-villes Trouv… path:1,HTML,1,BODY,0,DIV,0,SECTION,0,MAIN,5,SECTION selector:div#__next > section.flex > main#main > section.w-full snippet:<section class="w-full z-10 lg:max-w-[1312px] max-[1344px]:px-4 mx-auto mt-[-215px]" data-testid="flight-search-section-body" role="search"> type:node] score:0.006463]]

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.

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:6349.862 label:Time to first byte subpart:timeToFirstByte] map[duration:939.628 label:Resource load delay subpart:resourceLoadDelay] map[duration:81.946 label:Resource load duration subpart:resourceLoadDuration] map[duration:306.6 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: Maisons aux couleurs vives à Notting Hill, dans l’ouest de Londres.
path: 0,SECTION,0,IMG
selector: section.w-full > section.relative > img.h-full
snippet: <img alt="Maisons aux couleurs vives à Notting Hill, dans l’ouest de Londres." fetchpriority="high" width="1200" height="550" decoding="async" data-nimg="1" class="h-full absolute top-0 w-full object-cover" src="https://ba.scene7.com/is/image/ba/terrace-houses-nottinghill-london?wid=12…" style="color: transparent;">

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
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/LYX52JSEaObEL0uEii/VzsYMAE/...180.1 KiB162 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
section.grid > article.w-full > picture.picture > img section.grid > article.w-full > picture.picture > img
/is/image/ba/downtown-cityscape-boston-massachusetts?wid=...137.5 KiB127.8 KiB
section.grid > article.w-full > picture.picture > img section.grid > article.w-full > picture.picture > img
/is/image/ba/adults-walking-brooklyn-new-york-3?wid=1200&...81.1 KiB74.9 KiB
section.grid > article.w-full > picture.picture > img section.grid > article.w-full > picture.picture > img
/is/image/ba/adult-view-marshalls-beach-golden-gate?wid=1...46.6 KiB43.0 KiB
section.grid > article.w-full > picture.picture > img section.grid > article.w-full > picture.picture > img
/is/image/ba/adult-boat-sunset-statue-liberty-NewYork?wid...21.6 KiB19.9 KiB
Nouveaux trajets section.max-[1344px]:px-4 > section.flex > div.w-full > section.rounded-lg
/is/image/ba/harbour-boats-morocco-rabat?wid=400&hei=420&...46.0 KiB18.7 KiB
Nos salons section.max-[1344px]:px-4 > section.flex > div.w-full > section.rounded-lg
/is/image/ba/first-lounge-speedmarque-logo-gatwick?wid=40...37.6 KiB10.3 KiB
Nos destinations section.max-[1344px]:px-4 > section.flex > div.w-full > section.rounded-lg
/is/image/ba/south-west-coast-path-sea-cliffs-coastline-n...41.6 KiB7.8 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: 265 ms
URLTime Spent
www.britishairways.com/265 ms
www.britishairways.com/travel/home/public0.0 ms
www.britishairways.com/travel/home/public/fr_fr0.0 ms
www.britishairways.com/travel/home/public/fr_fr/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: 768 ms
URLTime Spent
www.britishairways.com/travel/home/public/fr_fr/868 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
0.055
Rechercher des options de vol Vols Vol + Hôtel Vol + Voiture Multi-villes Trouv… div#__next > section.flex > main#main > section.w-full
0.033
0.029
0.009
Rechercher des options de vol Vols Vol + Hôtel Vol + Voiture Multi-villes Trouv… div#__next > section.flex > main#main > section.w-full
0.006
Se connecter main#main > header#header > nav.ds-cr-bg-midnight-blue-700 > section.LOGIN
0.003
Quand tradition rime avec modernitéLondresVols pour London à partir de64 €L'all… div.block > div.swiper > div.swiper-wrapper > div.swiper-slide
0.003
0.001
div.ds-cp-w-full > div.ds-cr-text-theme-select-default > div.ds-cr-relative > div.ds-cr-pointer-events-none div.ds-cp-w-full > div.ds-cr-text-theme-select-default > div.ds-cr-relative > div.ds-cr-pointer-events-none
0.000
0.000

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.

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: 240 ms 229.3 KiB
URLTransfer SizeEst Savings
www.britishairways.com/nx/b/homepage/_next/static/css/52917433ef874c1b.css243.9 KiB229.3 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: 580 ms 809.3 KiB
URLTransfer SizeEst Savings
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876...889.8 KiB480.7 KiB
www.britishairways.com/nx/b/homepage/_next/static/chunks/748-587cd0e2d888bbd0.js217.6 KiB75.5 KiB
tagman.britishairways.com/britishairways/nexus-prod/Bootstrap.js118.7 KiB58.0 KiB
www.britishairways.com/nx/b/homepage/_next/static/chunks/294-19da17d576ea4783.js77.0 KiB52.2 KiB
s.go-mpulse.net/boomerang/93U6S-JS5E3-HQLJ8-98G8C-NNRXF56.3 KiB41.3 KiB
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/LYX52JSEaObEL0uEii/VzsYMAE/...179.1 KiB37.8 KiB
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/tbX52JSEaObE/GkghMAE/bD5LE0...161.9 KiB33.5 KiB
/nx/b/homepage/_next/static/chunks/framework-3d9cad9dc1d0...64.9 KiB30.3 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
/nx/b/homepage/_next/static/chunks/framework-3d9cad9dc1d0...539 ms447 ms6.3 ms
Unattributable328 ms62 ms0.0 ms
tagman.britishairways.com/britishairways/nexus-prod/Bootstrap.js294 ms225 ms14 ms
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876...256 ms166 ms72 ms
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/LYX52JSEaObEL0uEii/VzsYMAE/...252 ms214 ms16 ms
www.britishairways.com/travel/home/public/fr_fr/177 ms14 ms4.8 ms
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/tbX52JSEaObE/GkghMAE/bD5LE0...166 ms147 ms15 ms
/nx/b/homepage/_next/static/chunks/pages/index-27990ef270...55 ms54 ms0.1 ms
www.britishairways.com/nx/b/homepage/_next/static/chunks/748-587cd0e2d888bbd0.js54 ms7.9 ms21 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 Evaluation1.4 s
Other403 ms
Script Parsing & Compilation172 ms
Style & Layout117 ms
Garbage Collection57 ms
Rendering53 ms
Parse HTML & CSS15 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

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
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876...906.0 KiB
/nx/b/homepage/_next/static/chunks/5ce8f35c-498c238a70038...345.4 KiB
www.britishairways.com/nx/b/homepage/_next/static/css/52917433ef874c1b.css248.3 KiB
www.britishairways.com/nx/b/homepage/_next/static/chunks/748-587cd0e2d888bbd0.js241.9 KiB
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/LYX52JSEaObEL0uEii/VzsYMAE/...180.1 KiB
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/tbX52JSEaObE/GkghMAE/bD5LE0...162.2 KiB
/is/image/ba/downtown-cityscape-boston-massachusetts?wid=...137.9 KiB
tagman.britishairways.com/britishairways/nexus-prod/Bootstrap.js119.1 KiB
/is/image/ba/adults-walking-brooklyn-new-york-3?wid=1200&...81.5 KiB
www.britishairways.com/nx/b/homepage/_next/static/chunks/294-19da17d576ea4783.js81.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
speedmarque-colour-negative-colour logo nav.ds-cr-flex > a.focus-visible:ds-cr-outline > span.ds-cr-flex > img
www.britishairways.com/nx/b/static/logos/speedmarque-colour-negative-colour.svg

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

●Optimize DOM size
●Font display
●Forced reflow
●LCP request discovery
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 4 user timings
●Avoid long main-thread tasks 7 long tasks found
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 60 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
○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.

ARIA

When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
1 Adulte div.ds-cp-w-full > div.ds-cr-flex > button#passenger-selector > span#FormGroupDropdown-value-passenger-selector

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

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
Gérer la réservation div.ml-auto > section.lg:mt-16 > a.focus-visible:ds-cr-outline > button.flex
Enregistrement div.ml-auto > section.lg:mt-16 > a.focus-visible:ds-cr-outline > button.flex
Afficher le statut du vol div.ml-auto > section.lg:mt-16 > a.focus-visible:ds-cr-outline > button.flex

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.

Internationalization and localization

Specifying a valid BCP 47 language helps screen readers announce text properly. Learn how to use the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These are opportunities to improve the interpretation of your content by users in different locales.

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
Vol + Hôtel div.w-full > div.w-full > div.flex > button#tab-1
Vol + Voiture div.w-full > div.w-full > div.flex > button#tab-2
Trouver votre prochaine aventure section.lg:max-w-[calc(100%-1rem-170px)] > section > div.flex > a#flight-tab-custom-find-your-next-adventure
○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
●Image elements have `[alt]` attributes
●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.
●Select elements have associated label elements.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Uses ARIA roles only on compatible elements
○`[accesskey]` values are unique
○Elements with `role="dialog"` or `role="alertdialog"` 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
○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
○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.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
92

Best Practices

General

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
tagman.britishairways.com/britishairways/nexus-prod/Bootstrap.js line 910, col 20
Connecting to 'https://c.go-mpulse.net/api/config.json?key=93U6S-JS5E3-HQLJ8-98G8C-NNRXF&d=www.britishairways.com&t=5918649&v=1.720.0&sl=0&si=08fc49b5-8bbd-4d9e-a2d3-7a982467bccc-td55j6&plugins=AK,ConfigOverride,Continuity,PageParams,IFrameDelay,AutoXHR,SPA,History,Angular,Backbone,Ember,RT,CrossDomain,BW,PaintTiming,NavigationTiming,ResourceTiming,Memory,CACHE_RELOAD,Errors,TPAnalytics,UserTiming,Akamai,Early,EventTiming,LOGN&acao=&ak.ai=221216' violates the following Content Security Policy directive: "connect-src 'self' ui.prod1.ba-nexus.iag.cloud 'unsafe-eval' https://test.widget-api.safetravel.amadeus.com *.tt.omtrdc.net *.sc.omtrdc.net *.ba.experiencecloud.adobe.com *.ensighten.com *.sec.levexis.com tagman.britishairways.com doh.cq0.co *.adsrvr.org adsrvr.org *.fls.doubleclick.net *.doubleclick.net *.google.com google.com *.stackadapt.com *.digital-cloud.medallia.eu *.quantummetric.com wss://*.decibelinsight.net *.kampyle.com *.demdex.net *.force.com *.salesforceliveagent.com *.site.com *.salesforce.com *.adoberesources.net *.adobedc.net *.activitymap.adobe.com cm.everesttech.net *.accdab.net *.akamaihd.net s.go-mpulse.net *.auth0.com *.iagl.digital *.kg668dbov0.execute-api.us-east-1.s3.amazonaws.com *.prd-webforms-livesite-dirty.s3.amazonaws.com *.s3-eu-west-1.amazonaws.com *.britishairways.com britishairways.com *.ba.com *.baplc.com *.iag.cloud *.cdn-net.com *.csnjs.cloudflare.com *.api.cybersource.com *.dynatrace.com *.viajes.iberia.com *.iag.cloud.com *.mpsnare.iesnare.com *.ci-mpsnare.iovation.com *.code.jquery.com *.ajax.googleapis.com *.api.pci-proxy.com *.traveldocs.ba.com *.joinsherpa.io *.joinsherpa.com *.smartling.com *.seal.globalsign.com *.avios.com *.cheapflights.co.uk *.cheapflights.com *.facebook.com connect.facebook.net *.googleadservices.com *.google.co.uk *.googlesyndication.com *.googletagmanager.com *.instagram.com *.kayak.co.uk *.kayak.com *.bat.bing.com *.prf.hn api.impact.com *.reevoo.com *.platform.twitter.com *.decibelinsight.net *.decibelinsight.com *.decibel.net *.decibel.com *.cb-eu.maxymiser.com *.service.maxymiser.net www.momondo.com www.momondo.co.uk www.momondo.de *.omniture.com *.skyscanner.net *.amadeus.com *.icm.aero browser-intake-datadoghq.eu www.datadoghq-browser-agent.com datadoghq-browser-agent.com analytics.tiktok.com hcaptcha.com *.hcaptcha.com hcaptchastatus.com *.hcaptchastatus.com *.onetrust.com cdn.cookielaw.org *.paypal.com *.paypalobjects.com *.venmo.com ba.scene7.com". The action has been blocked.
/_next/data/Po9JbVd0utDhbDkc6VCED/default/travel/managebo...
Failed to load resource: the server responded with a status of 404 ()
/_next/data/Po9JbVd0utDhbDkc6VCED/default/travel/olciland...
Failed to load resource: the server responded with a status of 404 ()
/_next/data/Po9JbVd0utDhbDkc6VCED/default/travel/flightst...
Failed to load resource: the server responded with a status of 404 ()
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876... line 182, col 34853
Refused to set unsafe header "User-Agent"

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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
/nx/b/homepage/_next/static/chunks/pages/_app-8e5554fa876...
www.britishairways.com/nx/b/homepage/_next/static/chunks/748-587cd0e2d888bbd0.js
/JgkOWn/cQeAhL/WYaC/o28gIw/wW/LYX52JSEaObEL0uEii/VzsYMAE/...
tagman.britishairways.com/britishairways/nexus-prod/Bootstrap.js
●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
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Ensure proper origin isolation with COOP
○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.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #ContentError
1<!DOCTYPE html>Syntax not understood
2<html xmlns="http://www.w3.org/1999/xhtml">Unknown directive
3 <head>Syntax not understood
4 <meta charset="UTF-8">Syntax not understood
5 <meta name="robots" content="noindex">Syntax not understood
6 <meta name="viewport" content="width=device-width, initial-scale=1.0">Syntax not understood
7 <title>British Airways - Information Page</title>Syntax not understood
8 <style type="text/css">Syntax not understood
9 * {Syntax not understood
10 box-sizing:border-box;Unknown directive
11 }Syntax not understood
12 html {Syntax not understood
13 font-size: 70%;Unknown directive
14 }Syntax not understood
15 body {Syntax not understood
16 font-family: Arial, Tahoma, Verdana, Helvetica, sans-serif;Unknown directive
17 color: #666;Unknown directive
18 margin: 0 auto;Unknown directive
19 padding: 0;Unknown directive
20 font-size: 16px !important;Unknown directive
21 width: 980px;Unknown directive
22 line-height: 16px;Unknown directive
23 max-width: 90%;Unknown directive
24 }Syntax not understood
25 h1 {Syntax not understood
26 font-size: 42px;Unknown directive
27 line-height: 60px;Unknown directive
28 margin: 20px 0 20px;Unknown directive
29 color: #172E4D;Unknown directive
30 font-weight: normal;Unknown directive
31 font-family: "MyliusModernRegular",Helvetica,Arial,sans-serif;Unknown directive
32 text-rendering: optimizelegibility;Unknown directive
33 }Syntax not understood
34 a {Syntax not understood
35 color:#2671d3;Unknown directive
36 text-decoration:none;Unknown directive
37 font-family: Open Sans,Helvetica,Arial,sans-serif;Unknown directive
38 font-size: 16px;Unknown directive
39 font-weight: 400;Unknown directive
40 line-height: 24px;Unknown directive
41 letter-spacing: 0.004em;Unknown directive
42 text-align: center;Unknown directive
43 margin: 16px 0px !important;Unknown directive
44 text-decoration: underline !important;Unknown directive
45 transition: color .2s cubic-bezier(.645,.045,.355,1)Unknown directive
46 }Syntax not understood
47 a:hover {Unknown directive
48 color:#021b41;Unknown directive
49 }Syntax not understood
50 p {Syntax not understood
51 margin: 16px 0;Unknown directive
52 font-family: "MyliusModernRegular",Helvetica,Arial,sans-serif;Unknown directive
53 font-size: 20px; Unknown directive
54 font-weight: 300;Unknown directive
55 line-height: 32px;Unknown directive
56 letter-spacing: 0.014em;Unknown directive
57 text-align: left;Unknown directive
58 }Syntax not understood
59 a:link, a:visited {Unknown directive
60 text-decoration: none;Unknown directive
61 }Syntax not understood
62 .pageContent {Syntax not understood
63 padding:50px 0 50px 0;Unknown directive
64 }Syntax not understood
66 display:noneUnknown directive
67 }Syntax not understood
69 position: fixed;Unknown directive
70 bottom: 0;Unknown directive
71 right: 0;Unknown directive
72 line-height: 1.35714;Unknown directive
73 margin: 10px 0;Unknown directive
74 padding: 0;Unknown directive
75 font-size: 14px !important;Unknown directive
76 }Syntax not understood
77 hr {Syntax not understood
78 background-color: #F0F0F0;Unknown directive
79 border: medium none;Unknown directive
80 color: #F0F0F0;Unknown directive
81 height: 5px;Unknown directive
82 line-height: 0;Unknown directive
83 margin: 30px 0;Unknown directive
84 text-align: center;Unknown directive
85 width: 100%;Unknown directive
86 }Syntax not understood
87 .links, .languages {Syntax not understood
88 line-height: 25px;Unknown directive
89 }Syntax not understood
90 .links a {Syntax not understood
91 font-weight:bold;Unknown directive
92 }Syntax not understood
93 img {Syntax not understood
94 margin: 30px 0 0 0;Unknown directive
95 }Syntax not understood
96 </style>Syntax not understood
97 </head>Syntax not understood
98 <body>Syntax not understood
99 <img class="logo" src="data:image/png;base64,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" alt="BA logo"/>Unknown directive
100 <hr/>Syntax not understood
101 <div class="languages">Syntax not understood
102 <h1>Welcome to ba.com</h1>Syntax not understood
103 <p>We are experiencing high demand on ba.com at the moment.</p>Syntax not understood
104 <p>Thank you for your patience.</p>Syntax not understood
106 <br/>Syntax not understood
107 <br/>Syntax not understood
110 <hr/>Syntax not understood
111 <p id="foo">141.227.188.220 | 0.b4843554.1775594575.19411b4</p>Syntax not understood
113 </div>Syntax not understood
114 </body>Syntax not understood
115</html>Syntax not understood

To appear in search results, crawlers need access to your app.

○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
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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