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Results for https://vueling.com

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United States United States · Santa Clara Completed: Apr 15, 2026 23:05 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
D67

Site Health

Score: 67 / 100

Based on 8 categories, 0 sections

Room to improve — your 32.6s load time is above Google's 2.5s 'Good' threshold.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Solid SEO basics — a few optimizations could boost rankings.

Good server performance with room for optimization.

Several regulatory requirements are not yet met.

Good content signals with minor gaps.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Angular sites average 71
At average
Better than 9% of Angular sites See full Angular benchmark →
Apple sites average 73
-6 below average
Better than 1% of Apple sites See full Apple benchmark →

Top Priorities (5)

1

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
2

Cookie 'device' is missing the Secure flag

Security gaps expose your site and users to attacks, eroding trust.

Security › Cookie Security
3

Cookie 'showbooking' is missing the Secure flag

Security gaps expose your site and users to attacks, eroding trust.

Security › Cookie Security
4

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy
5

Page weighs 13.5 MB (4.2 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

4

High impact, low effort — start here.

Strategic

1

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
BeaverCheck badge
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<a href="https://beavercheck.com/results/00549f20-e6af-4319-9786-6ee5542549ff"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fvueling.com" alt="BeaverCheck Score"></a>
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What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 32.6s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Addressing the critical issues below would have the most immediate impact on your user trust.

4 security gaps detected — browsers may warn visitors about your site.
Your LCP is 32.6s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.
C
Could reach Estimate based on resolving critical issues

Return on Investment

€220 investment → €0.98/month returns + EUR 120,500,000 risk avoided

Payback period: > 2 years First-year ROI: -95%

Investment

€220

4h · 5 findings

Monthly returns

€0.98 /mo

~€12 / year

  • Bandwidth savings €0.98

Regulatory risk avoided

EUR 120,500,000

if kept compliant

  • ePrivacy Directive EUR 100,000,000
  • RGPD EUR 20,000,000
  • EAA EUR 500,000

€110 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

€220

4.0 developer hours at €55/hr

Based on Spain rates (€55/hr)

Quick wins
€110 4 fixes in ~120 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,668 / month at risk

~€120,500,012 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveRGPDEAA
  • No privacy policy link detected
    RGPD: EUR 10,000 – EUR 20,000,000
  • Trackers detected but no cookie policy found
    RGPD: EUR 5,000 – EUR 10,000,000
  • Trackers detected but no cookie policy found
    RGPD: EUR 10,000 – EUR 20,000,000

+7 more

Bandwidth Waste

€0.98 /mo

13267.9 MB/mo × 0.074 EUR/GB

  • Optimize transfer: save ~1.3 MB per page load
    Saves €0.98/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Unique monthly visitors from your analytics

Purchases, signups, or key actions

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue
Current bounce (est.)
After fixes (est.)
Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Thanks for your feedback!

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

25
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

9.76 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

32.57 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

7.30 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.011

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

16.07 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

33.34 s

Detailed Report

Audit breakdown by category with detailed findings.

25

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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
m.vueling.com/main.589b2ac66d647595.js224.0 s735.7 KiB
cdn.quantummetric.com/qscripts/quantum-vueling.js300.0 s154.8 KiB
m.vueling.com/scripts.5f11d3cd0711642e.js382.0 s154.7 KiB
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/J1i3LDVuV9w9Xk/bBJnKQVZfQ/EHlz/bBFRMAUC21600.0 s182.6 KiB
m.vueling.com/assets/fonts/ds-vueling-icons.woff2?m8cpo5222.0 s109.2 KiB
/VvV_CU/-cR/1WF/N2BGojSq/SDi3LDVu/Uk9rKQVZfQ/JB4J/VWwANyU...21600.0 s153.4 KiB
m.vueling.com/assets/fonts/source-sans-pro/SourceSansPro-SemiBold.woff294.0 s75.0 KiB
m.vueling.com/assets/fonts/source-sans-pro/SourceSansPro-Regular.woff2399.0 s76.0 KiB
m.vueling.com/assets/img/home/complete-your-travel/parking.png484.0 s60.4 KiB
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/OtAutoBlock.js86400.0 s131.6 KiB
m.vueling.com/resources/5ca37ed9506e8073faf2465e595f1330830972a3a4ff7600.0 s56.6 KiB
se.monetate.net/js/2/a-02a953bb/p/m.vueling.com/custom.js3600.0 s63.8 KiB
m.vueling.com/styles.8e885a44ccb9c0d4.css357.0 s53.3 KiB
m.vueling.com/assets/img/home/complete-your-travel/hotels.webp83.0 s48.5 KiB
cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js86400.0 s87.9 KiB
m.vueling.com/assets/img/home/complete-your-travel/cars.png11.0 s28.7 KiB
m.vueling.com/6258.afba6971f62b6f1d.js255.0 s23.4 KiB
m.vueling.com/231.353e5fa70266ac30.js335.0 s22.6 KiB
m.vueling.com/assets/fonts/pilcrow/vuelingpilcrow-semibold-webfont.woff2395.0 s22.4 KiB
m.vueling.com/assets/img/check-in/home-push/home-checkin2x.webp418.0 s20.7 KiB
m.vueling.com/common.899366586e059b1b.js482.0 s18.1 KiB
m.vueling.com/assets/img/myvueling/push-home-vy-club.png469.0 s17.9 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
m.vueling.com/polyfills.dcdf2a094f8295e9.js420.0 s12.9 KiB
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/SD/YGFXKQVZfQ/WkoG/Cm09AkYp86400.0 s28.8 KiB
static.vueling.com/corporative7/media/1187/roma-fco_091025ok.webp603013.0 s108.5 KiB
static.vueling.com/corporative7/media/1055/bc_mb_375x715_bg_140426w.webp603013.0 s85.2 KiB
static.vueling.com/corporative7/media/1108/edimburgo-edi.webp603013.0 s77.9 KiB
m.vueling.com/ajax-loader.94cdb3319868cfa7.gif110.0 s6.6 KiB
static.vueling.com/corporative7/media/1066/amsterdam-ams.webp603013.0 s63.0 KiB
static.vueling.com/corporative7/media/1153/malta-mla.webp603013.0 s56.6 KiB
s.go-mpulse.net/boomerang/PC6QT-A8FK6-WHT6M-VUAGT-35NQS604800.0 s56.1 KiB
m.vueling.com/8946.db870a66c8e5f2bc.js255.0 s5.1 KiB
m.vueling.com/runtime.8bee5dd196d2555b.js420.0 s4.6 KiB
m.vueling.com/assets/img/home/app-store/android.svg267.0 s3.4 KiB
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/otSDKStub.js86400.0 s7.5 KiB
static.vueling.com/corporative7/media/1017/urban_mobile_home.jpg2590214.0 s27.0 KiB
m.vueling.com/assets/img/home/logo-vueling.svg450.0 s2.6 KiB
static.vueling.com/corporative7/media/1016/playa_mobile.jpg2590214.0 s23.4 KiB
m.vueling.com/assets/img/home/fly-with-us/avios.svg155.0 s1.9 KiB
static.vueling.com/corporative7/media/1015/familia_mobile_home.jpg2590235.0 s17.5 KiB
m.vueling.com/assets/img/home/fly-with-us/hand-up.svg255.0 s1.6 KiB
m.vueling.com/assets/js/usabilla-dev.js451.0 s1.6 KiB
m.vueling.com/assets/img/home/fly-with-us/check-in.svg155.0 s1.3 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.7 KiB
m.vueling.com/assets/img/home/social/instagram.svg11.0 s1.0 KiB
m.vueling.com/assets/img/home/social/youtube.svg291.0 s1.0 KiB
m.vueling.com/assets/img/loadingVueling2Airplanesv2.svg463.0 s1.0 KiB
m.vueling.com/assets/img/home/social/twitter.svg291.0 s1.0 KiB
m.vueling.com/assets/img/home/social/facebook.svg154.0 s862 B
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/SD/YGFXKQVZfQ/Z1NX/EXYUJRlZ86400.0 s1.3 KiB
/eu-central-1.amazonaws/vueling-universal13.js?z=0.073516...0.0 ms365 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
m.vueling.com/assets/fonts/ds-vueling-icons.woff2?m8cpo5320 ms
m.vueling.com/assets/fonts/pilcrow/vuelingpilcrow-semibold-webfont.woff2305 ms
m.vueling.com/assets/fonts/source-sans-pro/SourceSansPro-SemiBold.woff2155 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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:7.329 source:map[column:32013 line:0 type:source-location url:https://m.vueling.com/6258.afba6971f62b6f1d.js urlProvider:network]] map[reflowTime:6.501 source:map[column:1.463006e+06 line:0 type:source-location url:https://m.vueling.com/main.589b2ac66d647595.js urlProvider:network]] map[reflowTime:9.29 source:map[column:1.485627e+06 line:0 type:source-location url:https://m.vueling.com/main.589b2ac66d647595.js urlProvider:network]] map[reflowTime:13.507 source:map[column:62730 line:0 type:source-location url:https://m.vueling.com/6258.afba6971f62b6f1d.js urlProvider:network]] map[reflowTime:1.126 source:map[column:707875 line:0 type:source-location url:https://m.vueling.com/main.589b2ac66d647595.js urlProvider:network]] map[reflowTime:8.094 source:map[column:705855 line:0 type:source-location url:https://m.vueling.com/main.589b2ac66d647595.js 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
alt div.img-background-main > image-container.img-background-main__src > picture.ng-tns-c4244759221-3 > img.ng-tns-c4244759221-3
static.vueling.com/corporative7/media/1055/bc_mb_375x715_bg_140426w.webp84.9 KiB42.8 KiB
div.card-container > vy-card-link > div.card-container > div.card-container__header div.card-container > vy-card-link > div.card-container > div.card-container__header
m.vueling.com/assets/img/home/complete-your-travel/parking.png59.9 KiB25.7 KiB
URBAN AND CULTURAL div#your-destiny > cdk-virtual-scroll-viewport.cdk-virtual-scroll-viewport > div.cdk-virtual-scroll-content-wrapper > div.destiny-card
static.vueling.com/corporative7/media/1017/urban_mobile_home.jpg26.6 KiB20.8 KiB
div.card-container > vy-card-link > div.card-container > div.card-container__header div.card-container > vy-card-link > div.card-container > div.card-container__header
m.vueling.com/assets/img/home/complete-your-travel/cars.png28.2 KiB19.9 KiB
TO THE BEACH! div#your-destiny > cdk-virtual-scroll-viewport.cdk-virtual-scroll-viewport > div.cdk-virtual-scroll-content-wrapper > div.destiny-card
static.vueling.com/corporative7/media/1016/playa_mobile.jpg23.0 KiB17.3 KiB
div.card-container > vy-card-link > div.card-container > div.card-container__header div.card-container > vy-card-link > div.card-container > div.card-container__header
m.vueling.com/assets/img/home/complete-your-travel/hotels.webp48.0 KiB13.8 KiB
FAMILY div#your-destiny > cdk-virtual-scroll-viewport.cdk-virtual-scroll-viewport > div.cdk-virtual-scroll-content-wrapper > div.destiny-card
static.vueling.com/corporative7/media/1015/familia_mobile_home.jpg17.1 KiB11.3 KiB
vueling club home.ng-star-inserted > app-vy-club-push-home.ng-star-inserted > div.image > img
m.vueling.com/assets/img/myvueling/push-home-vy-club.png17.4 KiB10.0 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:1266.258 label:Time to first byte subpart:timeToFirstByte] map[duration:4895.812 label:Resource load delay subpart:resourceLoadDelay] map[duration:160.829 label:Resource load duration subpart:resourceLoadDuration] map[duration:123.912 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: alt
path: 1,HTML,2,BODY,1,DIV,1,VY-APP,2,MAIN,1,HOME,3,DIV,3,HOME-IMAGE-SLIDER,0,IMAGE-BACKGROUND,1,SWIPER-CONTAINER,0,SWIPER-SLIDE,0,DIV,0,IMAGE-CONTAINER,0,PICTURE,1,IMG
selector: div.img-background-main > image-container.img-background-main__src > picture.ng-tns-c4244759221-3 > img.ng-tns-c4244759221-3
snippet: <img _ngcontent-ng-c4244759221="" priority="true" width="100" height="100" class="ng-tns-c4244759221-3 picture-width ng-trigger ng-trigger-fadeIn" alt="alt" data-test-id="" loading="eager" fetchpriority="high" decoding="sync" ng-img="true" src="https://static.vueling.com/corporative7/media/1055/bc_mb_375x715_bg_140426…">

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-0-IMG
nodeLabel: alt
path: 1,HTML,2,BODY,1,DIV,1,VY-APP,2,MAIN,1,HOME,3,DIV,3,HOME-IMAGE-SLIDER,0,IMAGE-BACKGROUND,1,SWIPER-CONTAINER,0,SWIPER-SLIDE,0,DIV,0,IMAGE-CONTAINER,0,PICTURE,1,IMG
selector: div.img-background-main > image-container.img-background-main__src > picture.ng-tns-c4244759221-3 > img.ng-tns-c4244759221-3
snippet: <img _ngcontent-ng-c4244759221="" priority="true" width="100" height="100" class="ng-tns-c4244759221-3 picture-width ng-trigger ng-trigger-fadeIn" alt="alt" data-test-id="" loading="eager" fetchpriority="high" decoding="sync" ng-img="true" src="https://static.vueling.com/corporative7/media/1055/bc_mb_375x715_bg_140426…">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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

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
m.vueling.com/resources/5ca37ed9506e8073faf2465e595f1330830972a3a4ff756.6 KiB302 ms
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/SD/YGFXKQVZfQ/Z1NX/EXYUJRlZ1.3 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 3.3 s
URLTime Spent
vueling.com/1.2 s
www.vueling.com/1.2 s
www.vueling.com/en917 ms
m.vueling.com/0.0 ms

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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 7.0 s 1.1 MiB
URLTransfer SizeEst Savings
m.vueling.com/main.589b2ac66d647595.js735.2 KiB356.4 KiB
m.vueling.com/scripts.5f11d3cd0711642e.js154.2 KiB108.8 KiB
www.googletagmanager.com/gtag/js?id=AW-1070364677&cx=c&gtm=4e64f0h2144.0 KiB106.2 KiB
cdn.quantummetric.com/qscripts/quantum-vueling.js154.2 KiB64.7 KiB
www.googletagmanager.com/gtag/js?id=AW-1070364677143.8 KiB64.6 KiB
www.googletagmanager.com/gtag/js?id=AW-807657239&cx=c&gtm=4e64f0h2137.0 KiB63.9 KiB
www.googletagmanager.com/gtag/js?id=DC-9971265&cx=c&gtm=4e64f0h2131.9 KiB58.8 KiB
www.googletagmanager.com/gtag/js?id=G-Y2R5C29F9Q&cx=c&gtm=4e64f0h2172.4 KiB56.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-56RKXM6198.8 KiB51.6 KiB
se.monetate.net/js/2/a-02a953bb/p/m.vueling.com/custom.js63.6 KiB47.9 KiB
cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js87.6 KiB46.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-NQHBFRM&gtm=4e64f0h2147.2 KiB44.0 KiB
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/J1i3LDVuV9w9Xk/bBJnKQVZfQ/EHlz/bBFRMAUC181.4 KiB37.8 KiB
s.go-mpulse.net/boomerang/PC6QT-A8FK6-WHT6M-VUAGT-35NQS55.9 KiB31.5 KiB
/VvV_CU/-cR/1WF/N2BGojSq/SDi3LDVu/Uk9rKQVZfQ/JB4J/VWwANyU...152.8 KiB28.3 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
m.vueling.com/5.6 s5.2 s2.9 ms
m.vueling.com/resources/5ca37ed9506e8073faf2465e595f1330830972a3a4ff75.4 s4.8 s43 ms
Unattributable2.0 s748 ms0.0 ms
m.vueling.com/main.589b2ac66d647595.js1.5 s1.2 s14 ms
/VvV_CU/-cR/1WF/N2BGojSq/SDi3LDVu/Uk9rKQVZfQ/JB4J/VWwANyU...1.1 s942 ms91 ms
www.googletagmanager.com/gtag/js?id=AW-807657239&cx=c&gtm=4e64f0h2900 ms805 ms36 ms
www.googletagmanager.com/gtm.js?id=GTM-NQHBFRM&gtm=4e64f0h2605 ms519 ms71 ms
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/J1i3LDVuV9w9Xk/bBJnKQVZfQ/EHlz/bBFRMAUC555 ms454 ms85 ms
cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js527 ms352 ms58 ms
www.googletagmanager.com/gtm.js?id=GTM-56RKXM6523 ms350 ms104 ms
www.googletagmanager.com/gtag/js?id=G-Y2R5C29F9Q&cx=c&gtm=4e64f0h2388 ms327 ms56 ms
m.vueling.com/scripts.5f11d3cd0711642e.js350 ms203 ms47 ms
/trk/4/s/a-02a953bb/p/m.vueling.com/933881050-0?mr=t16744...292 ms228 ms3.9 ms
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/OtAutoBlock.js208 ms25 ms167 ms
cdn.quantummetric.com/qscripts/quantum-vueling.js199 ms137 ms55 ms
www.googletagmanager.com/gtag/js?id=DC-9971265&cx=c&gtm=4e64f0h2198 ms153 ms42 ms
www.googletagmanager.com/gtag/js?id=AW-1070364677104 ms64 ms38 ms
se.monetate.net/js/2/a-02a953bb/p/m.vueling.com/custom.js103 ms71 ms32 ms
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/otSDKStub.js102 ms84 ms1.9 ms
s.go-mpulse.net/boomerang/PC6QT-A8FK6-WHT6M-VUAGT-35NQS94 ms63 ms25 ms
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/SD/YGFXKQVZfQ/WkoG/Cm09AkYp84 ms76 ms7.4 ms
/trk/4/s/a-02a953bb/p/m.vueling.com/933881050-1?mr=t16744...80 ms66 ms3.2 ms
www.googletagmanager.com/gtag/js?id=AW-1070364677&cx=c&gtm=4e64f0h277 ms32 ms44 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 Evaluation16.9 s
Other2.0 s
Script Parsing & Compilation1.0 s
Style & Layout530 ms
Garbage Collection375 ms
Parse HTML & CSS203 ms
Rendering94 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
The page has an unload handler in the main frame.Actionable
The page has an unload handler in a sub frame.Actionable

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 59.9 KiB
URLTransfer SizeEst Savings
m.vueling.com/styles.8e885a44ccb9c0d4.css52.8 KiB41.9 KiB
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …21.6 KiB18.1 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
m.vueling.com/main.589b2ac66d647595.js735.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-56RKXM6198.8 KiB
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/J1i3LDVuV9w9Xk/bBJnKQVZfQ/EHlz/bBFRMAUC182.6 KiB
www.googletagmanager.com/gtag/js?id=G-Y2R5C29F9Q&cx=c&gtm=4e64f0h2172.4 KiB
cdn.quantummetric.com/qscripts/quantum-vueling.js154.8 KiB
m.vueling.com/scripts.5f11d3cd0711642e.js154.7 KiB
/VvV_CU/-cR/1WF/N2BGojSq/SDi3LDVu/Uk9rKQVZfQ/JB4J/VWwANyU...153.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-NQHBFRM&gtm=4e64f0h2147.2 KiB
www.googletagmanager.com/gtag/js?id=AW-1070364677144.2 KiB
www.googletagmanager.com/gtag/js?id=AW-1070364677&cx=c&gtm=4e64f0h2144.1 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
vueling club home.ng-star-inserted > app-vy-club-push-home.ng-star-inserted > div.image > img
m.vueling.com/assets/img/myvueling/push-home-vy-club.png
Collect Avios, fly for free app-fly-with-us.ng-star-inserted > div.fly-with-us-container > div.fly-with-us-container__content > img
m.vueling.com/assets/img/home/fly-with-us/avios.svg
No admin charges app-fly-with-us.ng-star-inserted > div.fly-with-us-container > div.fly-with-us-container__content > img
m.vueling.com/assets/img/home/fly-with-us/hand-up.svg
app-store button.mdc-button > span.mdc-button__label > span > img
m.vueling.com/assets/img/home/app-store/android.svg
Free online check-in app-fly-with-us.ng-star-inserted > div.fly-with-us-container > div.fly-with-us-container__content > img
m.vueling.com/assets/img/home/fly-with-us/check-in.svg
Vueling app-home-footer > div.footer > span.footer__logo > img
m.vueling.com/assets/img/home/logo-vueling.svg
Vueling youtube div.social > div.social__rss > span.social__rss__item > img
m.vueling.com/assets/img/home/social/youtube.svg
Vueling instagram div.social > div.social__rss > span.social__rss__item > img
m.vueling.com/assets/img/home/social/instagram.svg
Vueling twitter div.social > div.social__rss > span.social__rss__item > img
m.vueling.com/assets/img/home/social/twitter.svg
Vueling facebook div.social > div.social__rss > span.social__rss__item > img
m.vueling.com/assets/img/home/social/facebook.svg

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

●Layout shift culprits
●Optimize DOM size
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 61 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 150 ms
●Server Backend Latencies 190 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 180 ms
●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.

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
COOKIE POLICY We use our own and third-party cookies for analytical, personali… body.ui-mobile-viewport > div#onetrust-consent-sdk > div#onetrust-banner-sdk

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.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta head > meta

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
Cookie policy div#onetrust-group-container > div#onetrust-policy > p#onetrust-policy-text > a.ot-cookie-policy-link
○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-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
●`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 are distinguishable without relying on color.
●Links have a discernible name
●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
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
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.
m.vueling.com/resources/5ca37ed9506e8073faf2465e595f1330830972a3a4ff7 line 112, col 62

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.

Description
The script resource is behind a redirect, which is disallowed.

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.

URLMap URL
m.vueling.com/VvV_CU/-cR/1WF/N2BGojSq/J1i3LDVuV9w9Xk/bBJnKQVZfQ/EHlz/bBFRMAUC
m.vueling.com/scripts.5f11d3cd0711642e.jsm.vueling.com/scripts.5f11d3cd0711642e.js.map
m.vueling.com/main.589b2ac66d647595.jsm.vueling.com/main.589b2ac66d647595.js.map
m.vueling.com/runtime.8bee5dd196d2555b.jsm.vueling.com/runtime.8bee5dd196d2555b.js.map
m.vueling.com/polyfills.dcdf2a094f8295e9.jsm.vueling.com/polyfills.dcdf2a094f8295e9.js.map
m.vueling.com/common.899366586e059b1b.jsm.vueling.com/common.899366586e059b1b.js.map
m.vueling.com/8946.db870a66c8e5f2bc.jsm.vueling.com/8946.db870a66c8e5f2bc.js.map
m.vueling.com/6258.afba6971f62b6f1d.jsm.vueling.com/6258.afba6971f62b6f1d.js.map
m.vueling.com/231.353e5fa70266ac30.jsm.vueling.com/231.353e5fa70266ac30.js.map
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
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
www.vueling.com/en/customer-services/cookie-policyMore information

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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

4
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.46 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

12.05 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

2.52 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.629

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

7.03 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

14.45 s

Detailed Report

Audit breakdown by category with detailed findings.

4

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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
static.vueling.com/Chatbots/VY/V4/JS/common/chatbot.dependencies.v1.3.min.js84589.0 s377.7 KiB
cdn.quantummetric.com/qscripts/quantum-vueling.js300.0 s154.8 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-KFYAJ4ZJ.js714.0 s132.2 KiB
/vAfMnS/t/6/1jcUYyClD5mv/OhYYScu7EiaEm0YY/PW0JTHkTAQ/LBUU...21600.0 s176.4 KiB
/vAfMnS/t/6/1jcUYyClD5mv/N0YYScu7Ei/SA8PTHkTAQ/OxlJDgQ/ud...21600.0 s153.2 KiB
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/OtAutoBlock.js86400.0 s131.6 KiB
www.vueling.com/resources/a964080c97d1812b778ef6340201418e1780013facd85600.0 s56.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-V5IOYWY7.js715.0 s57.5 KiB
se.monetate.net/js/2/a-02a953bb/p/vueling.com/custom.js3600.0 s64.0 KiB
static.vueling.com/corporativeCMS/media/r4bdby4g/bc_bg_1920x1280_140426w.webp602998.0 s490.8 KiB
cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js86400.0 s87.9 KiB
static.vueling.com/corporativeCMS/media/e30cex3c/bc_bg_1920x1280w.webp602998.0 s270.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-QUPUOVVT.js714.0 s28.5 KiB
static.vueling.com/Chatbots/VY/V4/JS/common/file-upload.webchat-plugin.js84590.0 s60.6 KiB
/corporativeCMS/media/h0sc1nqc/hotels_desktop_020625-resi...602998.0 s220.4 KiB
static.vueling.com/corporativeCMS/media/2dblolpp/cars-webp-resized-webp.webp602998.0 s196.6 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-2KIBCMTM.js714.0 s21.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-Q4G7WRM4.js713.0 s20.7 KiB
/corporativeCMS/media/l24lctug/banner-footer-simple_bilba...603006.0 s168.4 KiB
/corporativeCMS/media/fprktm1v/hannover_banner-footer-dob...603006.0 s166.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-RAJCEA4D.js714.0 s17.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-6NEBNPKW.js713.0 s15.4 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-42S6ZPRI.js715.0 s15.0 KiB
static.vueling.com/corporativeCMS/Js/lib/jquery-3.2.1.min.js84589.0 s31.9 KiB
static.vueling.com/corporativeCMS/media/zfwdrpf1/imagen-vyclub_okw.webp602999.0 s127.8 KiB
/corporativeCMS/WebComponents/home/browser/polyfills.js?v...306.0 s12.3 KiB
static.vueling.com/corporativeCMS/media/kl0dk4rp/urbano_desktop_w.webp603000.0 s116.0 KiB
static.vueling.com/assets/fonts/ds-vueling-icons.woff2?l63u8m602995.0 s110.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-OYP4AXSZ.js721.0 s11.6 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-PC6VM5Q4.js713.0 s10.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-NXHFTX7Z.js713.0 s10.3 KiB
/corporativeCMS/WebComponents/home/browser/home.css?v=639...305.0 s8.4 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-F7WRKFBJ.js715.0 s8.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-AVIFEA7R.js713.0 s8.5 KiB
/corporativeCMS/WebComponents/home/browser/main.js?v=6391...306.0 s7.2 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-COSWWYOK.js713.0 s7.4 KiB
static.vueling.com/corporativeCMS/media/4vtgvimy/bc_bg_1920x1280w.webp602998.0 s66.0 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-646SXQ5D.js715.0 s7.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-W4INNR34.js719.0 s7.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-FYZFU7XD.js711.0 s5.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-OMDFUMVM.js714.0 s5.8 KiB
static.vueling.com/corporativeCMS/media/cr4og2xq/activities_211124_webp.webp602998.0 s51.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-FPGUSIFU.js713.0 s5.6 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-ZISGE3MS.js713.0 s5.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-DK43CZYZ.js716.0 s4.9 KiB
static.vueling.com/corporativeCMS/media/2ywhgwlg/vuelign_visa_s_en_webp.webp603006.0 s42.6 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-274EWR7K.js716.0 s4.4 KiB
static.vueling.com/corporativeCMS/media/pocfqhd4/app_store.svg703.0 s4.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-EVQKECTT.js714.0 s4.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-CEM2W7YC.js713.0 s4.0 KiB
static.vueling.com/Chatbots/VY/V4/CSS/common/base-webchat-style.css84591.0 s8.9 KiB
static.vueling.com/corporativeCMS/media/yewdyfvm/408-229-amsterdam-ams-webp.webp603000.0 s35.2 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-RJCDLL6D.js712.0 s3.8 KiB
static.vueling.com/corporativeCMS/media/oblf03nu/calidos_invierno_desktop_w.webp603000.0 s34.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-KO7XI3A3.js713.0 s3.5 KiB
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/otSDKStub.js86400.0 s7.5 KiB
static.vueling.com/corporativeCMS/media/lkeb1qlp/airelibre_desktop_w.webp603001.0 s29.4 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-52SXXD6R.js713.0 s3.1 KiB
/Chatbots/VY/V4/CSS/custom/vueling-metachatbot-webchat-st...84591.0 s6.8 KiB
static.vueling.com/assets/fonts/sourcesanspro-regular-webfont.woff2602999.0 s27.0 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-MJYIOXXO.js713.0 s3.0 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-OSJ2TGCR.js715.0 s3.0 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-YDXHPRTY.js715.0 s2.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-24SX63O6.js720.0 s2.9 KiB
static.vueling.com/assets/fonts/sourcesanspro-semibold-webfont.woff2603000.0 s25.5 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-JXJXAOHA.js84854.0 s6.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-D47WYFGP.js712.0 s2.8 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-ZKEJXQJM.js713.0 s2.8 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-IIWKASNC.js715.0 s2.8 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-H3FZAU4C.js713.0 s2.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-WVN2OVRU.js713.0 s2.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-F4ATT4QT.js716.0 s2.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-VZLALR3F.js714.0 s2.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-UJ2GCDIN.js713.0 s2.6 KiB
static.vueling.com/corporativeCMS/media/s1jdo3sj/408-229-edinburgh-edi-webp.webp603000.0 s23.0 KiB
static.vueling.com/Chatbots/VY/V4/CSS/common/vueling-webchat-form-style.css84591.0 s5.7 KiB
static.vueling.com/corporativeCMS/media/fetny4et/408-229-rome-fco-webp.webp603000.0 s22.8 KiB
/Chatbots/VY/V4/Fonts/VuelingPilcrow/WOFF2/vuelingpilcrow...602997.0 s22.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-FMKJWUUQ.js713.0 s2.4 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-2VNVDORC.js715.0 s2.4 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-LLPEYH2G.js713.0 s2.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-K7T3LFIX.js713.0 s2.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-ZJ65DNF7.js716.0 s2.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-75JQWZIA.js711.0 s2.2 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-XHGT5CD7.js714.0 s2.2 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-CSXMGRGR.js715.0 s2.2 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-ADKG5BBH.js717.0 s2.0 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-PXJLJH6V.js720.0 s2.0 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-E6NMNV46.js713.0 s1.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-3VMFUVNR.js719.0 s1.9 KiB
static.vueling.com/corporativeCMS/media/525mlez2/408-229-malta-mla-webp.webp603000.0 s16.0 KiB
static.vueling.com/corporativeCMS/media/1ulgvk1g/familia_desktop_w.webp603001.0 s14.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-YZYECX7O.js713.0 s1.5 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-5G7Y64IB.js715.0 s1.4 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-2MLZEQFL.js84827.0 s2.9 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-XULMRTD3.js716.0 s1.3 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-ODZT2BVP.js716.0 s1.2 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-ZJ43FGEL.js716.0 s1.1 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-5DERRTJ3.js713.0 s970 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-5JX5DDCU.js713.0 s963 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-PMDO47CN.js717.0 s928 B
/corporativeCMS/media/aljernfi/loading-icon.svg?v=1dbea8c...714.0 s918 B
www.vueling.com/assets/images/loading.svg5.0 s826 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-337O7CTT.js714.0 s877 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-A5ZHFN2T.js714.0 s840 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-3XSYJSLD.js713.0 s778 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-PFA6O3WB.js713.0 s738 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-6EJYH6VV.js716.0 s727 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-NBYYUSGM.js715.0 s719 B
static.vueling.com/corporativeCMS/media/sw4hgsii/google-play-badge2x.png2590181.0 s6.7 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-6F6DM43O.js714.0 s697 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-3HTXRVLP.js714.0 s597 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-LOMM5HFZ.js781.0 s596 B
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-4I6HNCSR.js713.0 s583 B
sb.monetate.net/img/1/p/1096/5980131.js/monetate.c.cr.js1360271.0 s4.7 KiB
static.vueling.com/assets/styles/spinner.css84591.0 s796 B
static.vueling.com/assets/styles/gridLayout.css84591.0 s757 B
static.vueling.com/corporativeCMS/Js/Monetate/asynchronousMonetateTag.js84591.0 s685 B
static.vueling.com/Chatbots/VY/V4/CSS/common/file-upload.webchat-plugin.css84591.0 s569 B
static.vueling.com/corporativeCMS/Js/Monetate/SetPageTypeMonetate.js84591.0 s472 B
static.vueling.com/corporativeCMS/Js/Monetate/TrackDataMonetate.js84591.0 s449 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:0.628889] map[node:map[boundingRect:map[bottom:4521 height:4521 left:0 right:1350 top:0 width:1350] lhId:page-17-BODY nodeLabel:body.en-GB path:1,HTML,2,BODY selector:body.en-GB snippet:<body class="en-GB"> type:node] score:0.628889]]
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:0.012733999999999999] map[node:map[boundingRect:map[bottom:342 height:92 left:357 right:1007 top:250 width:650] lhId:page-18-DIV nodeLabel:REJECT ALL ACCEPT ALL COOKIES MANAGE YOUR COOKIE SETTINGS path:1,HTML,2,BODY,38,DIV,1,DIV,0,DIV,0,DIV,1,DIV selector:div#onetrust-banner-sdk > div.ot-sdk-container > div.ot-sdk-row > div#onetrust-button-group-parent snippet:<div id="onetrust-button-group-parent" class="ot-sdk-twelve ot-sdk-columns has-reject-all-button"> type:node] score:0.012575 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://static.vueling.com/Chatbots/VY/V4/Fonts/VuelingPilcrow/WOFF2/vuelingpilcrow-semibold-webfont.woff2]] map[cause:Web font extra:map[type:url value:https://static.vueling.com/assets/fonts/sourcesanspro-regular-webfont.woff2]] map[cause:Web font extra:map[type:url value:https://static.vueling.com/assets/fonts/sourcesanspro-semibold-webfont.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:924 height:44 left:1217 right:1337 top:880 width:120] lhId:page-22-BUTTON nodeLabel:One unread message in chat. Open chat path:1,HTML,2,BODY,32,DIV,0,DIV,0,DIV,0,BUTTON selector:div > div.webchat-root > div > button.webchat-toggle-button snippet:<button data-cognigy-webchat-toggle="true" type="button" class="webchat-toggle-button cognigy-webchat-1970mn3 webchat-toggle-button-closed" aria-label="One unread message in chat. Open chat"> type:node] score:0.000139] map[node:map[boundingRect:map[bottom:312 height:20 left:1031 right:1256 top:292 width:225] lhId:page-20-DIV nodeLabel:1 Passenger path:1,HTML,2,BODY,3,DIV,1,MAIN,0,DIV,0,DIV,0,VY-SPA-WRAPPER-SEARCHER,2,DIV,3,DIV,0,VY-CDK-SEARCHER,0,DIV,0,VY-CDK-SEARCHER-BOOK-FLIGHT,0,DIV,1,DIV,1,VY-CDK-PAX-FEATURE,0,VY-CDK-PAX-SELECTOR,0,DIV,0,DIV,0,VY-CDK-PAX-INPUT,0,DIV,1,INPUT,a,#document-fragment,0,DIV selector:div snippet:<div> type:node] score:2e-05]]
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:0.036166] map[node:map[boundingRect:map[bottom:352 height:168 left:0 right:1350 top:184 width:1350] lhId:page-24-DIV nodeLabel:FLIGHTS HOTELS CARS From BCN To Outbound Return 1 Adult , 0 Children , 0 Infant… path:1,HTML,2,BODY,3,DIV,1,MAIN,0,DIV,0,DIV selector:div.body-wrapper > main > div#main-content > div.main-search_content snippet:<div class="main-search_content"> type:node] score:0.036009] map[node:map[boundingRect:map[bottom:312 height:20 left:95 right:335 top:292 width:240] lhId:page-23-DIV nodeLabel:div path:1,HTML,2,BODY,3,DIV,1,MAIN,0,DIV,0,DIV,0,VY-SPA-WRAPPER-SEARCHER,2,DIV,3,DIV,0,VY-CDK-SEARCHER,0,DIV,0,VY-CDK-SEARCHER-BOOK-FLIGHT,0,DIV,0,VY-CDK-STATIONS-FEATURE,0,DIV,0,DIV,0,VY-CDK-STATION-SELECTOR,0,DIV,0,VY-CDK-STATION-INPUT,0,DIV,0,DIV,2,INPUT,a,#document-fragment,1,DIV selector:div snippet:<div> type:node] score:0.000157]]

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
static.vueling.com/assets/fonts/ds-vueling-icons.woff2?l63u8m255 ms
static.vueling.com/assets/fonts/sourcesanspro-regular-webfont.woff2165 ms
static.vueling.com/assets/fonts/sourcesanspro-semibold-webfont.woff2160 ms
/Chatbots/VY/V4/Fonts/VuelingPilcrow/WOFF2/vuelingpilcrow...150 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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:40.319 source:map[column:274367 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.184 source:map[column:274718 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.665 source:map[column:320851 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js urlProvider:network]] map[reflowTime:1.822 source:map[column:148383 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js 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
div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
static.vueling.com/corporativeCMS/media/r4bdby4g/bc_bg_1920x1280_140426w.webp490.2 KiB292.5 KiB
vy-card-highlight > div.vy-card-highlight > picture.vy-card-highlight_picture_wrapper > img.vy-card-highlight_img vy-card-highlight > div.vy-card-highlight > picture.vy-card-highlight_picture_wrapper > img.vy-card-highlight_img
/corporativeCMS/media/h0sc1nqc/hotels_desktop_020625-resi...220.0 KiB202.5 KiB
vy-card-highlight > div.vy-card-highlight > picture.vy-card-highlight_picture_wrapper > img.vy-card-highlight_img vy-card-highlight > div.vy-card-highlight > picture.vy-card-highlight_picture_wrapper > img.vy-card-highlight_img
static.vueling.com/corporativeCMS/media/2dblolpp/cars-webp-resized-webp.webp196.2 KiB178.7 KiB
last card img div.vy-card-full-img_item > a > picture > img.vy-card-full-img_banner
/corporativeCMS/media/l24lctug/banner-footer-simple_bilba...168.0 KiB152.3 KiB
main card img div.vy-card-full-img_item > a > picture > img.vy-card-full-img_banner
/corporativeCMS/media/fprktm1v/hannover_banner-footer-dob...165.7 KiB133.0 KiB
div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
static.vueling.com/corporativeCMS/media/e30cex3c/bc_bg_1920x1280w.webp270.2 KiB109.5 KiB
vy-spa-club-banner-picture > div.vy-featured-banner-picture_wrapper > picture > img.vy-featured-banner-picture_block vy-spa-club-banner-picture > div.vy-featured-banner-picture_wrapper > picture > img.vy-featured-banner-picture_block
static.vueling.com/corporativeCMS/media/zfwdrpf1/imagen-vyclub_okw.webp127.4 KiB81.5 KiB
div.find-adventure_grid > a.find-adventure_card > picture > img.find-adventure_card_image div.find-adventure_grid > a.find-adventure_card > picture > img.find-adventure_card_image
static.vueling.com/corporativeCMS/media/kl0dk4rp/urbano_desktop_w.webp115.7 KiB64.1 KiB
vy-card-highlight > div.vy-card-highlight > picture.vy-card-highlight_picture_wrapper > img.vy-card-highlight_img vy-card-highlight > div.vy-card-highlight > picture.vy-card-highlight_picture_wrapper > img.vy-card-highlight_img
static.vueling.com/corporativeCMS/media/cr4og2xq/activities_211124_webp.webp51.4 KiB39.0 KiB
middle card img div.vy-card-full-img_item > a > picture > img.vy-card-full-img_banner
static.vueling.com/corporativeCMS/media/2ywhgwlg/vuelign_visa_s_en_webp.webp42.3 KiB31.8 KiB
div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
static.vueling.com/corporativeCMS/media/4vtgvimy/bc_bg_1920x1280w.webp65.7 KiB26.6 KiB
Amsterdam article.vy-card-offer > div.vy-card-offer_picture > picture > img.vy-card-offer_img
static.vueling.com/corporativeCMS/media/yewdyfvm/408-229-amsterdam-ams-webp.webp34.9 KiB26.3 KiB
div.find-adventure_grid > a.find-adventure_card > picture > img.find-adventure_card_image div.find-adventure_grid > a.find-adventure_card > picture > img.find-adventure_card_image
static.vueling.com/corporativeCMS/media/lkeb1qlp/airelibre_desktop_w.webp29.1 KiB17.3 KiB
div.find-adventure_grid > a.find-adventure_card > picture > img.find-adventure_card_image div.find-adventure_grid > a.find-adventure_card > picture > img.find-adventure_card_image
static.vueling.com/corporativeCMS/media/oblf03nu/calidos_invierno_desktop_w.webp33.9 KiB9.5 KiB
Edinburgh article.vy-card-offer > div.vy-card-offer_picture > picture > img.vy-card-offer_img
static.vueling.com/corporativeCMS/media/s1jdo3sj/408-229-edinburgh-edi-webp.webp22.7 KiB8.6 KiB
Rome (Fiumicino) article.vy-card-offer > div.vy-card-offer_picture > picture > img.vy-card-offer_img
static.vueling.com/corporativeCMS/media/fetny4et/408-229-rome-fco-webp.webp22.5 KiB8.4 KiB
Get the Vueling app on Google Play ul.vy-list-horizontal_container > li.vy-list-horizontal_item > a.vy-list-horizontal_item_link > img.ng-star-inserted
static.vueling.com/corporativeCMS/media/sw4hgsii/google-play-badge2x.png6.4 KiB5.8 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:1077.994 label:Time to first byte subpart:timeToFirstByte] map[duration:5473.33 label:Resource load delay subpart:resourceLoadDelay] map[duration:213.628 label:Resource load duration subpart:resourceLoadDuration] map[duration:121.798 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
path: 1,HTML,2,BODY,3,DIV,1,MAIN,1,DIV,0,DIV,0,DIV,0,DIV,0,VY-SPA-CAROUSEL-COUNTDOWN,0,SECTION,0,DIV,0,DIV,0,PICTURE,1,IMG
selector: div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
snippet: <img _ngcontent-ng-c3629777709="" alt="" class="vy-carousel-img" src="https://static.vueling.com/corporativeCMS/media/r4bdby4g/bc_bg_1920x1280_1…">

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-0-IMG
nodeLabel: div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
path: 1,HTML,2,BODY,3,DIV,1,MAIN,1,DIV,0,DIV,0,DIV,0,DIV,0,VY-SPA-CAROUSEL-COUNTDOWN,0,SECTION,0,DIV,0,DIV,0,PICTURE,1,IMG
selector: div.vy-carousel_item > div.vy-carousel-wrap_img > picture > img.vy-carousel-img
snippet: <img _ngcontent-ng-c3629777709="" alt="" class="vy-carousel-img" src="https://static.vueling.com/corporativeCMS/media/r4bdby4g/bc_bg_1920x1280_1…">

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

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
static.vueling.com/assets/styles/gridLayout.css757 B372 ms
www.vueling.com/resources/a964080c97d1812b778ef6340201418e1780013facd8556.7 KiB135 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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: 1.3 s
URLTime Spent
vueling.com/621 ms
www.vueling.com/652 ms
www.vueling.com/en0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
body.en-GB body.en-GB
0.629
FLIGHTS HOTELS CARS From BCN To Outbound Return 1 Adult , 0 Children , 0 Infant… div.body-wrapper > main > div#main-content > div.main-search_content
0.036
REJECT ALL ACCEPT ALL COOKIES MANAGE YOUR COOKIE SETTINGS div#onetrust-banner-sdk > div.ot-sdk-container > div.ot-sdk-row > div#onetrust-button-group-parent
0.013
div div
0.000
One unread message in chat. Open chat div > div.webchat-root > div > button.webchat-toggle-button
0.000
1 Passenger div
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.

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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 930 ms 864.7 KiB
URLTransfer SizeEst Savings
static.vueling.com/Chatbots/VY/V4/JS/common/chatbot.dependencies.v1.3.min.js367.5 KiB230.6 KiB
www.googletagmanager.com/gtag/js?id=AW-1070364677&cx=c&gtm=4e64e1143.8 KiB64.8 KiB
cdn.quantummetric.com/qscripts/quantum-vueling.js154.2 KiB63.5 KiB
www.googletagmanager.com/gtag/js?id=DC-9971265&cx=c&gtm=4e64e1131.7 KiB58.8 KiB
www.googletagmanager.com/gtag/js?id=G-Y2R5C29F9Q&cx=c&gtm=4e64e1172.4 KiB57.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-56RKXM6198.8 KiB51.6 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-KFYAJ4ZJ.js131.8 KiB48.2 KiB
cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js87.6 KiB46.4 KiB
se.monetate.net/js/2/a-02a953bb/p/vueling.com/custom.js63.8 KiB46.0 KiB
static.vueling.com/Chatbots/VY/V4/JS/common/file-upload.webchat-plugin.js60.3 KiB44.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-NQHBFRM&gtm=4e64e1147.0 KiB44.0 KiB
/vAfMnS/t/6/1jcUYyClD5mv/OhYYScu7EiaEm0YY/PW0JTHkTAQ/LBUU...175.4 KiB36.2 KiB
/vAfMnS/t/6/1jcUYyClD5mv/N0YYScu7Ei/SA8PTHkTAQ/OxlJDgQ/ud...152.8 KiB28.3 KiB
static.vueling.com/corporativeCMS/Js/lib/jquery-3.2.1.min.js31.5 KiB23.8 KiB
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-QUPUOVVT.js28.1 KiB20.9 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
64854_747627194.js1.5 s1.5 s0.0 ms
www.vueling.com/en1.2 s892 ms1.1 ms
www.vueling.com/resources/a964080c97d1812b778ef6340201418e1780013facd851.2 s1.1 s4.9 ms
/corporativeCMS/WebComponents/home/browser/polyfills.js?v...881 ms791 ms0.3 ms
Unattributable638 ms181 ms0.0 ms
/vAfMnS/t/6/1jcUYyClD5mv/OhYYScu7EiaEm0YY/PW0JTHkTAQ/LBUU...189 ms173 ms14 ms
www.googletagmanager.com/gtm.js?id=GTM-56RKXM6178 ms152 ms22 ms
/vAfMnS/t/6/1jcUYyClD5mv/N0YYScu7Ei/SA8PTHkTAQ/OxlJDgQ/ud...175 ms151 ms12 ms
www.googletagmanager.com/gtm.js?id=GTM-NQHBFRM&gtm=4e64e1162 ms139 ms21 ms
static.vueling.com/Chatbots/VY/V4/JS/common/chatbot.dependencies.v1.3.min.js152 ms104 ms47 ms
www.googletagmanager.com/gtag/js?id=G-Y2R5C29F9Q&cx=c&gtm=4e64e1151 ms123 ms28 ms
cdn.cookielaw.org/scripttemplates/6.38.0/otBannerSdk.js145 ms80 ms8.5 ms
/corporativeCMS/WebComponents/home/browser/main.js?v=6391...133 ms119 ms0.0 ms
cdn.quantummetric.com/qscripts/quantum-vueling.js93 ms75 ms15 ms
/trk/4/s/a-02a953bb/p/vueling.com/1613975739-1?mr=t167446...88 ms85 ms0.5 ms
cdn.cookielaw.org/consent/eb440cb9-982b-4dfe-9764-a5f339ad9985/OtAutoBlock.js62 ms7.0 ms43 ms
www.googletagmanager.com/gtag/js?id=AW-1070364677&cx=c&gtm=4e64e160 ms39 ms19 ms
www.googletagmanager.com/gtag/js?id=DC-9971265&cx=c&gtm=4e64e158 ms43 ms14 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 Evaluation7.6 s
Other1.2 s
Script Parsing & Compilation280 ms
Style & Layout220 ms
Garbage Collection168 ms
Rendering55 ms
Parse HTML & CSS43 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
The page has an unload handler in the main frame.Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
The page has an unload handler in a sub frame.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

Minifying 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 5.7 KiB
URLTransfer SizeEst Savings
static.vueling.com/corporativeCMS/Js/lib/jquery-3.2.1.min.js31.5 KiB5.7 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 28.4 KiB
URLTransfer SizeEst Savings
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …21.6 KiB18.4 KiB
about:blank10.1 KiB10.1 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
static.vueling.com/corporativeCMS/Stations/en-GB.json5.5 MiB
static.vueling.com/corporativeCMS/media/r4bdby4g/bc_bg_1920x1280_140426w.webp490.8 KiB
static.vueling.com/Chatbots/VY/V4/JS/common/chatbot.dependencies.v1.3.min.js377.7 KiB
static.vueling.com/corporativeCMS/media/e30cex3c/bc_bg_1920x1280w.webp270.7 KiB
/corporativeCMS/media/h0sc1nqc/hotels_desktop_020625-resi...220.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-56RKXM6199.2 KiB
static.vueling.com/corporativeCMS/media/2dblolpp/cars-webp-resized-webp.webp196.6 KiB
/vAfMnS/t/6/1jcUYyClD5mv/OhYYScu7EiaEm0YY/PW0JTHkTAQ/LBUU...176.4 KiB
www.googletagmanager.com/gtag/js?id=G-Y2R5C29F9Q&cx=c&gtm=4e64e1172.4 KiB
/corporativeCMS/media/l24lctug/banner-footer-simple_bilba...168.4 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
Get the Vueling app on Google Play ul.vy-list-horizontal_container > li.vy-list-horizontal_item > a.vy-list-horizontal_item_link > img.ng-star-inserted
static.vueling.com/corporativeCMS/media/sw4hgsii/google-play-badge2x.png
Get the Vueling app on the Apple Store ul.vy-list-horizontal_container > li.vy-list-horizontal_item > a.vy-list-horizontal_item_link > img.ng-star-inserted
static.vueling.com/corporativeCMS/media/pocfqhd4/app_store.svg

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

●Optimize DOM size
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 50 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 170 ms
●Server Backend Latencies 220 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 170 ms
○INP breakdown
○Avoid non-composited animations
86

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

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
COOKIE POLICY We use our own and third-party cookies for analytical, personali… body.en-GB > div#onetrust-consent-sdk > div#onetrust-banner-sdk

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
vy-carousel-navigation > div.vy-carousel-navigation > div.vy-carousel > button.vy-carousel_control--button vy-carousel-navigation > div.vy-carousel-navigation > div.vy-carousel > button.vy-carousel_control--button

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

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta head > meta

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
Cookie policy div#onetrust-group-container > div#onetrust-policy > p#onetrust-policy-text > a.ot-cookie-policy-link
○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-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
●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
●Elements with the `role=text` attribute do not have focusable descendents.
●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 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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○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
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○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.
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.vueling.com/resources/a964080c97d1812b778ef6340201418e1780013facd85 line 112, col 62

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
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/assets/styles/gridLayout.css' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/assets/styles/spinner.css' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/Chatbots/VY/V4/CSS/common/base-webchat-style.css' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/Chatbots/VY/V4/CSS/common/file-upload.webchat-plugin.css' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/Chatbots/VY/V4/CSS/common/vueling-webchat-form-style.css' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/Chatbots/VY/V4/CSS/custom/vueling-metachatbot-webchat-style.css' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
about:blank
Access to CSS stylesheet at 'https://static.vueling.com/corporativeCMS/WebComponents/home/browser/home.css?v=639118896464479481' from origin 'https://www.vueling.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
static.vueling.com/assets/styles/gridLayout.css
Failed to load resource: net::ERR_FAILED
static.vueling.com/assets/styles/spinner.css
Failed to load resource: net::ERR_FAILED
/corporativeCMS/WebComponents/home/browser/home.css?v=639...
Failed to load resource: net::ERR_FAILED
static.vueling.com/Chatbots/VY/V4/CSS/common/base-webchat-style.css
Failed to load resource: net::ERR_FAILED
static.vueling.com/Chatbots/VY/V4/CSS/common/vueling-webchat-form-style.css
Failed to load resource: net::ERR_FAILED
static.vueling.com/Chatbots/VY/V4/CSS/common/file-upload.webchat-plugin.css
Failed to load resource: net::ERR_FAILED
/Chatbots/VY/V4/CSS/custom/vueling-metachatbot-webchat-st...
Failed to load resource: net::ERR_FAILED

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.

URLMap URL
/vAfMnS/t/6/1jcUYyClD5mv/OhYYScu7EiaEm0YY/PW0JTHkTAQ/LBUU...
static.vueling.com/corporativeCMS/WebComponents/home/browser/chunk-KFYAJ4ZJ.js
static.vueling.com/Chatbots/VY/V4/JS/common/chatbot.dependencies.v1.3.min.js
static.vueling.com/Chatbots/VY/V4/JS/common/file-upload.webchat-plugin.jsstatic.vueling.com/file-upload.webchat-plugin.js.map
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
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
www.vueling.com/en/customer-services/cookie-policyMore information

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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