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DE · EUR (€) · Estimated Applicable regulations: DSGVO · ePrivacy Directive · EAA Dev cost: €90/hr How jurisdiction is detected
United States United States · Santa Clara Completed: Apr 15, 2026 23:04 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)
D69

Site Health

Score: 69 / 100

Based on 8 categories, 0 sections

Room to improve — your 70.5s load time is above Google's 2.5s 'Good' threshold.

Good foundation, but a few gaps could be exploited.

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.

Mostly compliant — a few items need attention.

Missing metadata means poor previews on social media and search.

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

HSTS sites average 74
At average
Better than 4% of HSTS sites See full HSTS benchmark →
Cloudflare sites average 73
At average
Better than 2% of Cloudflare sites See full Cloudflare 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

No Content-Security-Policy header found

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

Security › Content Security Policy
3

Page weighs 23.2 MB (21.2 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
4

1 image(s) missing alt attribute

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Alt Text Quality
5

No <main> landmark found

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Landmark Structure
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

2

High impact, low effort — start here.

Strategic

3

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 →
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<a href="https://beavercheck.com/results/7f40a031-3f42-4e7a-bf73-9d0cceef9774"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Flufthansa.de" 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 70.5s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

2 security gaps detected — browsers may warn visitors about your site.
Your LCP is 70.5s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.
2 accessibility issues exclude users who rely on assistive technology.
C
Could reach Estimate based on resolving critical issues

Return on Investment

€540 investment → €4.95/month returns + EUR 20,500,000 risk avoided

Payback period: > 2 years First-year ROI: -89%

Investment

€540

6h · 5 findings

Monthly returns

€4.95 /mo

~€59 / year

  • Bandwidth savings €4.95

Regulatory risk avoided

EUR 20,500,000

if kept compliant

  • DSGVO EUR 20,000,000
  • EAA EUR 500,000

€90 — 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

€540

6.0 developer hours at €90/hr

Based on Germany rates (€90/hr)

Quick wins
€90 2 fixes in ~60 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

€1,708,338 / month at risk

~€20,500,059 / year if left unfixed

Compliance Risk

€20,500,000

DSGVOEAA
  • No privacy policy link detected
    DSGVO: EUR 10,000 – EUR 20,000,000
  • Privacy Policy not detected
    DSGVO: EUR 10,000 – EUR 20,000,000
  • No <main> landmark found
    EAA: EUR 1,000 – EUR 500,000

+4 more

Bandwidth Waste

€4.95 /mo

66827.8 MB/mo × 0.074 EUR/GB

  • Optimize transfer: save ~6.7 MB per page load
    Saves €4.95/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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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

10
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.
100
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.

6.58 s

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

70.46 s

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

4.08 s

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

0.303

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

26.98 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.

76.42 s

Detailed Report

Audit breakdown by category with detailed findings.

10

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
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s308.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js21600.0 s345.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js21600.0 s264.2 KiB
tags.tiqcdn.com/utag/lufthansa/main/prod/utag.js300.0 s119.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js21600.0 s166.8 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s87.1 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/cf6255a2.chunk.js21600.0 s117.6 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s63.8 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s62.9 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s62.9 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s61.1 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s59.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/757adfda.chunk.js21600.0 s84.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/ea0a4090.chunk.js21600.0 s83.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38fd48be.chunk.js21600.0 s74.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9962a698.chunk.js21600.0 s73.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9792a05f.chunk.js21600.0 s66.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d10bccbc.chunk.js21600.0 s52.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3c7fbbd0.chunk.js21600.0 s45.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/6a38513a.chunk.js21600.0 s37.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/index.vea0vnMZ.css21600.0 s36.5 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/f00f3ef6.chunk.js21600.0 s33.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c3b7f597.chunk.js21600.0 s31.5 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d247fd2e.chunk.js21600.0 s19.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/46ae8b62.chunk.js21600.0 s14.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c2aa5e96.chunk.js21600.0 s14.1 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/919d1e5a.chunk.js21600.0 s13.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/f9637716.chunk.js21600.0 s13.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/fa3c0e85.chunk.js21600.0 s12.9 KiB
/cdn-cgi/challenge-platform/h/g/scripts/jsd/b0a7532ac8ec/...14400.0 s12.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c66f530d.chunk.js21600.0 s11.5 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/879baca6.chunk.js21600.0 s10.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38ad6fe3.chunk.js21600.0 s10.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/72263e15.chunk.js21600.0 s9.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/757d7063.chunk.js21600.0 s8.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/dc66b1fc.chunk.js21600.0 s7.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/a6f7592f.chunk.js21600.0 s7.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/e9348ee0.chunk.js21600.0 s7.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/af0e385d.chunk.js21600.0 s7.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c38a8fd4.chunk.js21600.0 s6.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/82a47319.chunk.js21600.0 s5.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/4bab50bf.chunk.js21600.0 s5.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d621ef95.chunk.js21600.0 s4.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/1ffbed66.chunk.js21600.0 s4.3 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s2.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3d39da65.chunk.js21600.0 s4.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/cf86e790.chunk.js21600.0 s4.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/caa5d494.chunk.js21600.0 s4.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/b5578a1c.chunk.js21600.0 s3.7 KiB
rum.hlx.page/.rum/@adobe/helix-rum-js@%5E2/dist/rum-standalone.js3600.0 s2.8 KiB
tags.tiqcdn.com/utag/tiqapp/utag.currency.js?utv=ut4.46.20260415220310300.0 s2.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/71fa984e.chunk.js21600.0 s3.1 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/06805c40.chunk.js21600.0 s2.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/452e8518.chunk.js21600.0 s1.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/60dd67cc.chunk.js21600.0 s1.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/a24828f6.chunk.js21600.0 s666 B
/utag/tiqapp/utag.v.js?a=lufthansa/main/202604140408&cb=1...300.0 s430 B
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/23e022a6.chunk.js21600.0 s617 B
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c222f242.chunk.js21600.0 s268 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:2.4e-05] map[score:2.4e-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:0.30263399999999996] map[node:map[boundingRect:map[bottom:790 height:508 left:22 right:390 top:282 width:368] lhId:page-15-DIV nodeLabel:Flights Rental Car Hotel Type of trip Round trip Round trip From To Adjust pass… path:1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,2,DIV selector:div.redesignedflightmanager > div.dcep-flight-manager > div#flightmanager-container-a38cda602-f0dd-4236-b40d-d818f7a64f3a > div#flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a snippet:<div id="flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a" class="pt-overlay flm-overlay"> type:node] score:0.300674] map[node:map[boundingRect:map[bottom:747 height:24 left:161 right:251 top:723 width:89] lhId:page-18-SPAN nodeLabel:button.button > span path:1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,2,DIV,0,DIV,0,SECTION,1,DIV,0,DIV,0,DIV,0,DIV,0,FORM,1,DIV,5,DIV,0,MAUI-BUTTON,a,#document-fragment,1,BUTTON,2,SPAN selector:button.button > span snippet:<span> type:node] score:0.001542] map[node:map[boundingRect:map[bottom:99 height:26 left:298 right:390 top:73 width:92] lhId:page-14-DIV nodeLabel:Login & Registration Navigation path:1,HTML,1,BODY,3,DIV,3,HEADER,1,DIV,1,DIV,1,DIV,0,DIV selector:div.common-header > div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links snippet:<div class="common-header-meta-links align-items-center justify-content-end d-flex"> type:node] score:0.000418 subItems:map[items:[map[cause:Unsized image element]] type:subitems]]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
/digitalhangar/design-system/releases/v1.26.2/standalone/...95 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...70 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...70 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...65 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...65 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:120.789 source:map[type:text value:[unattributed]]] map[reflowTime:42.711 source:map[column:14 line:67323 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.js urlProvider:network]] map[reflowTime:13.586 source:map[column:16 line:67708 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.js urlProvider:network]] map[reflowTime:5.444 source:map[column:23 line:67410 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.js urlProvider:network]] map[reflowTime:0.093 source:map[column:21 line:67644 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.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.moving-image > div.w-100 > figure > img.w-100 div.moving-image > div.w-100 > figure > img.w-100
www.lufthansa.com/content/dam/lh/documents/LHH_Griechenland%202.jpg10.2 MiB9.7 MiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/fareteaserdynamic/Destinati...164.4 KiB110.8 KiB
Lufthansa in the US div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/pixels_variations/c-293302233-1738...97.0 KiB77.8 KiB
div.teaser > a.teaser > div.image-wrapper > img div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-997670840-015-P...94.9 KiB76.1 KiB
USA, Los Angeles: P&radic;&sect;rchen beim Sonnenuntergang unterwegs im Cabrio.… div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/de/images/frontify_variations/2/c-1565599...90.7 KiB72.7 KiB
Ein Mann sitzt relaxed in der Premium Economy Class // A man sits relaxed in Pr… div.moving-image > div.w-100 > figure > img.w-100
/content/dam/lh/images/frontify_variations/5/c-1717148228...84.7 KiB67.7 KiB
Lufthansa student product div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-1317346499-genf...92.4 KiB63.7 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/bud-square.jpg....38.9 KiB17.8 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/ath-square.jpg....35.7 KiB14.6 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/rom-square.jpg....35.7 KiB14.6 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/muc-square.jpg....35.6 KiB14.5 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/zrh-square.jpg....29.8 KiB8.7 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/vie-square.jpg....28.3 KiB7.2 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/fra-square.jpg....26.0 KiB4.9 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: div.moving-image > div.w-100 > figure > img.w-100
path: 1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG
selector: div.moving-image > div.w-100 > figure > img.w-100
snippet: <img src="/content/dam/lh/documents/LHH_Griechenland 2.jpg" srcset="/content/dam/lh/documents/LHH_Griechenland 2.jpg.transform/lh-dcep-transfo…" alt="" class="w-100 h-100 object-cover">

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
value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/app.b01dedab.css120.0 KiB750 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/index.vea0vnMZ.css36.5 KiB300 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...2.8 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: 2.0 s
URLTime Spent
lufthansa.de/1.2 s
www.lufthansa.com/801 ms
www.lufthansa.com/us/en/homepage0.0 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
Flights Rental Car Hotel Type of trip Round trip Round trip From To Adjust pass… div.redesignedflightmanager > div.dcep-flight-manager > div#flightmanager-container-a38cda602-f0dd-4236-b40d-d818f7a64f3a > div#flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a
0.301
button.button > span button.button > span
0.002
Login & Registration Navigation div.common-header > div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links
0.000
0.000

Diagnostics

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: 610 ms 125.1 KiB
URLTransfer SizeEst Savings
/digitalhangar/design-system/releases/v1.26.2/standalone/...307.8 KiB75.0 KiB
/etc.clientlibs/clientlibs/granite/jquery.1fc733054ddb2e2...86.6 KiB42.1 KiB
/etc.clientlibs/clientlibs/granite/utils.a21d361818b30206...10.6 KiB8.0 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: 910 ms 149.1 KiB
URLTransfer SizeEst Savings
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/app.b01dedab.css118.9 KiB114.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/index.vea0vnMZ.css36.4 KiB34.7 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

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: 4.3 s 871.4 KiB
URLTransfer SizeEst Savings
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js343.3 KiB165.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js166.6 KiB150.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js262.4 KiB134.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/cf6255a2.chunk.js117.5 KiB76.2 KiB
/etc.clientlibs/clientlibs/granite/jquery.1fc733054ddb2e2...86.6 KiB57.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38fd48be.chunk.js74.7 KiB45.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d10bccbc.chunk.js52.1 KiB45.0 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...307.8 KiB42.5 KiB
tags.tiqcdn.com/utag/lufthansa/main/prod/utag.js116.8 KiB39.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9792a05f.chunk.js66.0 KiB33.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9962a698.chunk.js73.5 KiB33.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/757adfda.chunk.js84.2 KiB29.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3c7fbbd0.chunk.js44.5 KiB20.0 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
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js7.7 s7.0 s5.6 ms
Unattributable4.0 s311 ms0.0 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...3.2 s2.7 s19 ms
www.lufthansa.com/us/en/homepage2.2 s93 ms17 ms
shop.lufthansa.com/booking/api/prefetch547 ms486 ms5.2 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38fd48be.chunk.js419 ms43 ms1.1 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/app.65c13881.js348 ms339 ms0.4 ms
/etc.clientlibs/clientlibs/granite/jquery/granite.ed0d934...318 ms291 ms1.5 ms
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js303 ms290 ms2.5 ms
tags.tiqcdn.com/utag/lufthansa/main/prod/utag.js247 ms147 ms53 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c2aa5e96.chunk.js143 ms8.6 ms0.2 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/app.b01dedab.css142 ms0.0 ms0.0 ms
/etc.clientlibs/clientlibs/granite/jquery.1fc733054ddb2e2...122 ms61 ms52 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 Evaluation11.8 s
Other5.1 s
Style & Layout1.8 s
Rendering459 ms
Garbage Collection398 ms
Parse HTML & CSS333 ms
Script Parsing & Compilation193 ms

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
www.lufthansa.com/content/dam/lh/documents/LHH_Griechenland%202.jpg10.2 MiB
/statics/applications/booking/dist/28.4.0/main.4ade5f225e...1.1 MiB
shop.lufthansa.com/statics/applications/booking/dist/28.4.0/design-system.css543.3 KiB
/statics/applications/booking/dist/28.4.0/styles.c6cb0c68...504.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js345.0 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...308.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js264.2 KiB
/statics/applications/booking/dist/28.4.0/5817.788550406a...262.9 KiB
/statics/applications/booking/dist/28.4.0/Icons-v2.6bfc7c...167.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js166.8 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
Lufthansa Allegris div.moving-image > div.w-100 > figure > img.w-100
/content/dam/lh/images/allegris/241119_LH_Allegris_Lounge...
Ein Mann sitzt relaxed in der Premium Economy Class // A man sits relaxed in Pr… div.moving-image > div.w-100 > figure > img.w-100
/content/dam/lh/images/frontify_variations/5/c-1717148228...
div.teaser > a.teaser > div.image-wrapper > img div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-997670840-015-P...
Lufthansa student product div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-1317346499-genf...
USA, Los Angeles: P&radic;&sect;rchen beim Sonnenuntergang unterwegs im Cabrio.… div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/de/images/frontify_variations/2/c-1565599...
Lufthansa in the US div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/pixels_variations/c-293302233-1738...

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

●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 150 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 40 ms
○INP breakdown
○User Timing marks and measures
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

Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#cm-consentDesc > div.checkBoxOption > label#ck_4_label > span#checkmark_ck_4 div#cm-consentDesc > div.checkBoxOption > label#ck_4_label > span#checkmark_ck_4

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Privacy settings We use cookies and similar technologies that are necessary to… body.maui-theme-lh > div#__tealiumGDPRcpPrefs > div#cm-dial-v211

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Payment options div.col-md-6 > div.imagelinklist > div.link-list > h4.headline

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
a.link a.link
a.link a.link

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[role]` values are valid
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●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.
●`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
●Elements with the `role=text` attribute do not have focusable descendents.
●ARIA toggle fields have accessible names
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements 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
○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
SharedStorage
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

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
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js line 38, col 9103
Error: Minified React error #419; visit https://reactjs.org/docs/error-decoder.html?invariant=419 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at sU (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:9104) at H1 (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:7565) at yP (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:46973) at dP (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:40746) at yU (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:40674) at Xp (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:40527) at lP (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:35482) at x (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:24:1629) at MessagePort.q (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:24:2005)
api.travelid.lufthansa.com/v1/user/me/loginstatus
Failed to load resource: the server responded with a status of 401 ()
www.lufthansa.com/libs/granite/csrf/token.json
Failed to load resource: the server responded with a status of 404 ()

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
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/ea0a4090.chunk.js
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js
/digitalhangar/design-system/releases/v1.26.2/standalone/...
●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
100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

26
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.
100
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.

1.66 s

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

11.93 s

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

764 ms

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

0.159

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

6.73 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.

13.03 s

Detailed Report

Audit breakdown by category with detailed findings.

26

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
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s307.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js21600.0 s344.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js21600.0 s264.1 KiB
tags.tiqcdn.com/utag/lufthansa/main/prod/utag.js300.0 s119.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js21600.0 s166.7 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s86.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/cf6255a2.chunk.js21600.0 s117.7 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s62.9 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s62.9 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s62.7 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s61.1 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s60.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/757adfda.chunk.js21600.0 s84.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/ea0a4090.chunk.js21600.0 s83.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38fd48be.chunk.js21600.0 s74.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9962a698.chunk.js21600.0 s73.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9792a05f.chunk.js21600.0 s66.1 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d10bccbc.chunk.js21600.0 s52.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3c7fbbd0.chunk.js21600.0 s44.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/6a38513a.chunk.js21600.0 s37.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/index.vea0vnMZ.css21600.0 s36.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/f00f3ef6.chunk.js21600.0 s33.5 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c3b7f597.chunk.js21600.0 s31.5 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d247fd2e.chunk.js21600.0 s20.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/46ae8b62.chunk.js21600.0 s14.5 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c2aa5e96.chunk.js21600.0 s14.0 KiB
/cdn-cgi/challenge-platform/h/g/scripts/jsd/b0a7532ac8ec/...14400.0 s13.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/fa3c0e85.chunk.js21600.0 s13.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/f9637716.chunk.js21600.0 s13.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/919d1e5a.chunk.js21600.0 s13.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c66f530d.chunk.js21600.0 s11.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/879baca6.chunk.js21600.0 s10.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38ad6fe3.chunk.js21600.0 s9.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/72263e15.chunk.js21600.0 s9.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/dc66b1fc.chunk.js21600.0 s8.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/757d7063.chunk.js21600.0 s7.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/e9348ee0.chunk.js21600.0 s7.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/af0e385d.chunk.js21600.0 s7.1 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/a6f7592f.chunk.js21600.0 s6.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/4bab50bf.chunk.js21600.0 s5.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c38a8fd4.chunk.js21600.0 s5.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/82a47319.chunk.js21600.0 s5.1 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/caa5d494.chunk.js21600.0 s4.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d621ef95.chunk.js21600.0 s4.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/1ffbed66.chunk.js21600.0 s4.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/cf86e790.chunk.js21600.0 s4.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3d39da65.chunk.js21600.0 s4.2 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...300.0 s2.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/b5578a1c.chunk.js21600.0 s3.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/06805c40.chunk.js21600.0 s3.7 KiB
rum.hlx.page/.rum/@adobe/helix-rum-js@%5E2/dist/rum-standalone.js3600.0 s2.8 KiB
tags.tiqcdn.com/utag/tiqapp/utag.currency.js?utv=ut4.46.20260415220338300.0 s2.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/71fa984e.chunk.js21600.0 s3.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/60dd67cc.chunk.js21600.0 s1.9 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/452e8518.chunk.js21600.0 s1.8 KiB
/utag/tiqapp/utag.v.js?a=lufthansa/main/202604140408&cb=1...300.0 s432 B
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/a24828f6.chunk.js21600.0 s618 B
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/23e022a6.chunk.js21600.0 s436 B
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/c222f242.chunk.js21600.0 s258 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:0.014941999999999999] map[node:map[boundingRect:map[bottom:1121 height:324 left:88 right:1247 top:796 width:1159] lhId:page-17-DIV nodeLabel:Discover the world with Lufthansa Allegris New premium entry Light options in P… path:1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,5,DIV selector:div.contentpage > div.content-wrapper > div.container-content > div.twocolumn snippet:<div class="twocolumn column event"> type:node] score:0.013704 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1350 height:117 left:89 right:362 top:1233 width:273] lhId:page-3-IMG nodeLabel:div.teaser > a.teaser > div.image-wrapper > img path:1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,6,DIV,1,DIV,2,DIV,0,DIV,0,DIV,2,A,0,DIV,0,IMG selector:div.teaser > a.teaser > div.image-wrapper > img snippet:<img src="/content/dam/lh/images/local_variations/c-997670840-015-Promo-Bowl-Kaffee-…" alt="" srcset="/content/dam/lh/images/local_variations/c-997670840-015-Promo-Bowl-Kaffee-…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:175 height:77 left:536 right:1262 top:98 width:726] lhId:page-14-DIV nodeLabel:Login & Registration Country and language selection which opens a new modal; cu… path:1,HTML,1,BODY,3,DIV,3,HEADER,1,DIV,1,DIV,1,DIV selector:header#header > div.common-header > div.common-header-wrapper > div.common-header-nav-wrap snippet:<div class="common-header-nav-wrap"> type:node] score:0.001238]]
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:0.15932699999999997] map[node:map[boundingRect:map[bottom:698 height:214 left:88 right:1247 top:484 width:1159] lhId:page-20-DIV nodeLabel:Flights Rental Car Hotel Type of trip Round trip Round trip Adjust passenger an… path:1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,2,DIV selector:div.redesignedflightmanager > div.dcep-flight-manager > div#flightmanager-container-a38cda602-f0dd-4236-b40d-d818f7a64f3a > div#flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a snippet:<div id="flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a" class="pt-overlay flm-overlay"> type:node] score:0.090539] map[node:map[boundingRect:map[bottom:698 height:214 left:88 right:1247 top:484 width:1159] lhId:page-20-DIV nodeLabel:Flights Rental Car Hotel Type of trip Round trip Round trip Adjust passenger an… path:1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,2,DIV selector:div.redesignedflightmanager > div.dcep-flight-manager > div#flightmanager-container-a38cda602-f0dd-4236-b40d-d818f7a64f3a > div#flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a snippet:<div id="flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a" class="pt-overlay flm-overlay"> type:node] score:0.068382] map[node:map[boundingRect:map[bottom:123 height:26 left:873 right:1044 top:97 width:172] lhId:page-22-DIV nodeLabel:Login & Registration path:1,HTML,1,BODY,3,DIV,3,HEADER,1,DIV,1,DIV,1,DIV,0,DIV,0,DIV selector:div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link snippet:<div class="top-link d-inline-flex align-items-center"> type:node] score:0.000269] map[node:map[boundingRect:map[bottom:123 height:26 left:873 right:1044 top:97 width:172] lhId:page-22-DIV nodeLabel:Login & Registration path:1,HTML,1,BODY,3,DIV,3,HEADER,1,DIV,1,DIV,1,DIV,0,DIV,0,DIV selector:div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link snippet:<div class="top-link d-inline-flex align-items-center"> type:node] score:0.000124 subItems:map[items:[map[cause:Unsized image element]] type:subitems]] map[node:map[boundingRect:map[bottom:125 height:30 left:1212 right:1262 top:95 width:50] lhId:page-19-DIV nodeLabel:Country and language selection which opens a new modal; currently: US path:1,HTML,1,BODY,3,DIV,3,HEADER,1,DIV,1,DIV,1,DIV,0,DIV,3,DIV selector:div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link snippet:<div class="top-link d-none d-lg-inline-flex align-items-center mr-0"> type:node] score:9e-06 subItems:map[items:[map[cause:Unsized image element]] type:subitems]]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
/digitalhangar/design-system/releases/v1.26.2/standalone/...60 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...60 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...55 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...55 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...55 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:82.947 source:map[type:text value:[unattributed]]] map[reflowTime:29.911 source:map[column:14 line:67323 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.js urlProvider:network]] map[reflowTime:16.331 source:map[column:16 line:67708 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.js urlProvider:network]] map[reflowTime:13.242 source:map[column:23 line:67410 type:source-location url:https://www.lufthansa.com/digitalhangar/design-system/releases/v1.26.2/standalone/packages/maui-design-system.js urlProvider:network]] map[reflowTime:2.793 source:map[column:3395 line:3 type:source-location url:https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/app.65c13881.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.moving-image > div.w-100 > figure > img.w-100 div.moving-image > div.w-100 > figure > img.w-100
www.lufthansa.com/content/dam/lh/documents/LHH_Griechenland%202.jpg10.2 MiB10.0 MiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/fareteaserdynamic/Destinati...164.4 KiB146.5 KiB
Lufthansa in the US div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/pixels_variations/c-293302233-1738...97.0 KiB93.6 KiB
div.teaser > a.teaser > div.image-wrapper > img div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-997670840-015-P...94.9 KiB91.5 KiB
USA, Los Angeles: P&radic;&sect;rchen beim Sonnenuntergang unterwegs im Cabrio.… div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/de/images/frontify_variations/2/c-1565599...90.7 KiB87.4 KiB
Lufthansa student product div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-1317346499-genf...92.4 KiB87.2 KiB
Ein Mann sitzt relaxed in der Premium Economy Class // A man sits relaxed in Pr… div.moving-image > div.w-100 > figure > img.w-100
/content/dam/lh/images/frontify_variations/5/c-1717148228...84.7 KiB71.4 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/bud-square.jpg....38.9 KiB21.0 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/ath-square.jpg....35.7 KiB17.8 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/rom-square.jpg....35.7 KiB17.8 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/muc-square.jpg....35.6 KiB17.7 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/zrh-square.jpg....29.8 KiB11.9 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/vie-square.jpg....28.3 KiB10.4 KiB
div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img div.fareteaser-recommendation-image > div.image-wrapper > maui-image > img
/content/dam/lh/images/offers/destination/fra-square.jpg....26.0 KiB8.1 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: div.moving-image > div.w-100 > figure > img.w-100
path: 1,HTML,1,BODY,3,DIV,5,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG
selector: div.moving-image > div.w-100 > figure > img.w-100
snippet: <img src="/content/dam/lh/documents/LHH_Griechenland 2.jpg" srcset="/content/dam/lh/documents/LHH_Griechenland 2.jpg.transform/lh-dcep-transfo…" alt="" class="w-100 h-100 object-cover">

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
value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/index.vea0vnMZ.css36.6 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/app.b01dedab.css119.0 KiB120 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...2.7 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: 945 ms
URLTime Spent
lufthansa.de/686 ms
www.lufthansa.com/258 ms
www.lufthansa.com/us/en/homepage0.0 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
Flights Rental Car Hotel Type of trip Round trip Round trip Adjust passenger an… div.redesignedflightmanager > div.dcep-flight-manager > div#flightmanager-container-a38cda602-f0dd-4236-b40d-d818f7a64f3a > div#flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a
0.091
Flights Rental Car Hotel Type of trip Round trip Round trip Adjust passenger an… div.redesignedflightmanager > div.dcep-flight-manager > div#flightmanager-container-a38cda602-f0dd-4236-b40d-d818f7a64f3a > div#flm-scroller-anchor-a38cda602-f0dd-4236-b40d-d818f7a64f3a
0.068
Discover the world with Lufthansa Allegris New premium entry Light options in P… div.contentpage > div.content-wrapper > div.container-content > div.twocolumn
0.014
Login & Registration Country and language selection which opens a new modal; cu… header#header > div.common-header > div.common-header-wrapper > div.common-header-nav-wrap
0.001
Login & Registration div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link
0.000
Login & Registration div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link
0.000
Country and language selection which opens a new modal; currently: US div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link
0.000
Login & Registration div.common-header-wrapper > div.common-header-nav-wrap > div.common-header-meta-links > div.top-link
0.000

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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: 80 ms 125.1 KiB
URLTransfer SizeEst Savings
/digitalhangar/design-system/releases/v1.26.2/standalone/...307.6 KiB75.0 KiB
/etc.clientlibs/clientlibs/granite/jquery.1fc733054ddb2e2...86.6 KiB42.1 KiB
/etc.clientlibs/clientlibs/granite/utils.a21d361818b30206...10.6 KiB8.0 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: 80 ms 147.0 KiB
URLTransfer SizeEst Savings
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/app.b01dedab.css118.9 KiB113.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/css/index.vea0vnMZ.css36.4 KiB33.8 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

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: 670 ms 871.1 KiB
URLTransfer SizeEst Savings
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js343.3 KiB165.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js166.6 KiB150.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js262.4 KiB134.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/cf6255a2.chunk.js117.5 KiB76.2 KiB
/etc.clientlibs/clientlibs/granite/jquery.1fc733054ddb2e2...86.6 KiB57.3 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/d10bccbc.chunk.js52.1 KiB45.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38fd48be.chunk.js74.7 KiB44.9 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...307.6 KiB42.5 KiB
tags.tiqcdn.com/utag/lufthansa/main/prod/utag.js116.8 KiB39.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9792a05f.chunk.js66.0 KiB33.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/9962a698.chunk.js73.5 KiB33.0 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/757adfda.chunk.js84.2 KiB29.4 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3c7fbbd0.chunk.js44.5 KiB20.0 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
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js2.1 s1.9 s1.5 ms
/digitalhangar/design-system/releases/v1.26.2/standalone/...1.3 s1.1 s7.7 ms
Unattributable1.2 s79 ms0.0 ms
www.lufthansa.com/us/en/homepage639 ms29 ms5.9 ms
shop.lufthansa.com/booking/api/prefetch239 ms175 ms1.8 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/app.65c13881.js183 ms142 ms0.2 ms
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/38fd48be.chunk.js162 ms13 ms0.5 ms
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js95 ms90 ms1.6 ms
tags.tiqcdn.com/utag/lufthansa/main/prod/utag.js73 ms48 ms15 ms
/etc.clientlibs/clientlibs/granite/jquery/granite.ed0d934...68 ms65 ms0.3 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 Evaluation3.7 s
Other1.6 s
Style & Layout496 ms
Rendering153 ms
Parse HTML & CSS122 ms
Garbage Collection93 ms
Script Parsing & Compilation57 ms

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
www.lufthansa.com/content/dam/lh/documents/LHH_Griechenland%202.jpg10.2 MiB
/statics/applications/booking/dist/28.4.0/main.4ade5f225e...1.1 MiB
shop.lufthansa.com/statics/applications/booking/dist/28.4.0/design-system.css543.3 KiB
/statics/applications/booking/dist/28.4.0/styles.c6cb0c68...504.7 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js344.9 KiB
/digitalhangar/design-system/releases/v1.26.2/standalone/...307.8 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js264.1 KiB
/statics/applications/booking/dist/28.4.0/5817.788550406a...262.9 KiB
/statics/applications/booking/dist/28.4.0/Icons-v2.6bfc7c...167.2 KiB
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js166.7 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
Lufthansa Allegris div.moving-image > div.w-100 > figure > img.w-100
/content/dam/lh/images/allegris/241119_LH_Allegris_Lounge...
Ein Mann sitzt relaxed in der Premium Economy Class // A man sits relaxed in Pr… div.moving-image > div.w-100 > figure > img.w-100
/content/dam/lh/images/frontify_variations/5/c-1717148228...
div.teaser > a.teaser > div.image-wrapper > img div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-997670840-015-P...
Lufthansa student product div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/local_variations/c-1317346499-genf...
USA, Los Angeles: P&radic;&sect;rchen beim Sonnenuntergang unterwegs im Cabrio.… div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/de/images/frontify_variations/2/c-1565599...
Lufthansa in the US div.teaser > a.teaser > div.image-wrapper > img
/content/dam/lh/images/pixels_variations/c-293302233-1738...

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

●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoid long main-thread tasks 18 long tasks found
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 150 ms
●Server Backend Latencies 350 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
○INP breakdown
○User Timing marks and measures
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

Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#cm-consentDesc > div.checkBoxOption > label#ck_4_label > span#checkmark_ck_4 div#cm-consentDesc > div.checkBoxOption > label#ck_4_label > span#checkmark_ck_4

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Privacy settings We use cookies and similar technologies that are necessary to… body.maui-theme-lh > div#__tealiumGDPRcpPrefs > div#cm-dial-v211

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Payment options div.col-md-6 > div.imagelinklist > div.link-list > h4.headline

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
a.link a.link
a.link a.link

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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Book & Prepare My bookings Discover Lufthansa 100 Years Lufthansa div.common-header-nav-wrap > div#nav > nav.header-navigation > ul

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

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[role]` values are valid
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●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.
●`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
●Elements with the `role=text` attribute do not have focusable descendents.
●ARIA toggle fields have accessible names
●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
●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.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements 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
○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
SharedStorage
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.lufthansa.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

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
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js line 38, col 9103
Error: Minified React error #419; visit https://reactjs.org/docs/error-decoder.html?invariant=419 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at sU (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:9104) at H1 (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:7565) at yP (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:46973) at dP (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:40746) at yU (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:40674) at Xp (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:40527) at fP (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:37535) at Go (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:37:3274) at bU (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:42280) at Hu (https://www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js:39:41241)
api.travelid.lufthansa.com/v1/user/me/loginstatus
Failed to load resource: the server responded with a status of 401 ()
www.lufthansa.com/libs/granite/csrf/token.json
Failed to load resource: the server responded with a status of 404 ()

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
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/eb345d23.chunk.js
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/ea0a4090.chunk.js
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/360cb2ea.chunk.js
www.lufthansa.com/etc/designs/dcep/clientlib-all/vite/js/3214b722.chunk.js
/digitalhangar/design-system/releases/v1.26.2/standalone/...
●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
100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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