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https://daad.de

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
2
REVIEW
3
PASS
10
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
83
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

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

2.08 s

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

3.13 s

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

353 ms

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

0.000

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

2.56 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.

4.81 s

Page Load Progression

452 ms
904 ms
1.4 s
1.8 s
2.3 s
2.7 s
3.2 s
3.6 s
Checks
17
10 PASS 3 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (428.9 KiB of 428.9 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
JS Execution Cost
Action
1492ms total JS execution
REVIEW
1492ms total JS execution
Warning::
https://www.daad.de/_nuxt/entry-CvhjTcfZ.js: 688ms CPU time
Warning::
https://www.daad.de/de/: 442ms CPU time
Info::
Unattributable: 247ms CPU time
Info::
https://www.daad.de/_nuxt/header-DR17VLUa.js: 114ms CPU time
Warning::
Third-party scripts: 1492ms (100% of total)

Main Thread Breakdown

Script Evaluation 48% Other 24% Style & Layout 14% Parse HTML & CSS 10%
ScriptTotalScriptingParse/CompileParty
https://www.daad.de/_nuxt/entry-CvhjTcfZ.js688ms573ms1ms3rd
https://www.daad.de/de/442ms47ms1ms3rd
Unattributable247ms16ms0ms3rd
https://www.daad.de/_nuxt/header-DR17VLUa.js114ms89ms3ms3rd
B
JS Bundles
6 scripts, 76 KB unused
REVIEW
6 scripts, 76 KB unused
Warning::
https://www.daad.de/_nuxt/header-DR17VLUa.js: 76 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 76 KB
76 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.daad.de/_nuxt/header-DR17VLUa.js183 KB76 KB (42%)✓3rd
https://www.daad.de/_nuxt/entry-CvhjTcfZ.js28 KB—✓3rd
https://www.daad.de/_nuxt/CookieModal-C734mL_4.js5 KB—✓3rd
https://www.daad.de/_nuxt/Stage-BUoqMm_h.js3 KB—✓3rd
https://www.daad.de/_nuxt/Announcement-_YacdomM.js1 KB—✓3rd
https://www.daad.de/_nuxt/Alert-ffNMZmCj.js2 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
429 KB transferred, 28 requests
PASS
429 KB transferred, 28 requests
Info::
Page weighs 1.3 MB (429 KB transferred)
Info::
28 HTTP requests
Info::
Estimated 0.09 g CO2 per page load
429 KB / 2.4 MB budget
429 KB transferred
28 requests
0.09 g CO2 per page load
JavaScript 222.1 KiB 52%
Fonts 99.3 KiB 23%
HTML 41.8 KiB 10%
Other 26.8 KiB 6%
CSS 20.1 KiB 5%
Images 18.8 KiB 4%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A
Image Optimization
5 images, 0 KB saveable
PASS
5 images, 0 KB saveable
Info::
All images are well-optimized
5 images 19 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
4 fonts (99 KB)
PASS
4 fonts (99 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

99 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.1 s LCP 3.1 shttps://www.daad.de/_nuxt/SourceSans3-Regular.DCUD6Pj3.woff2SourceSans3-Regular.DCU... https://www.daad.de/_nuxt/SourceSans3-Regular.DCUD6Pj3.woff2 — 25.4 KiB — 105 ms — font-display: swaphttps://www.daad.de/_nuxt/SourceSans3-Semibold.DZC6a7a9.woff2SourceSans3-Semibold.DZ... https://www.daad.de/_nuxt/SourceSans3-Semibold.DZC6a7a9.woff2 — 25.4 KiB — 105 ms — font-display: swaphttps://www.daad.de/_nuxt/SourceSans3-Light.Da-3MQVS.woff2SourceSans3-Light.Da-3M... https://www.daad.de/_nuxt/SourceSans3-Light.Da-3MQVS.woff2 — 25.1 KiB — 106 ms — font-display: swaphttps://www.daad.de/_nuxt/SourceSans3-It.BgLRS0hl.woff2SourceSans3-It.BgLRS0hl... https://www.daad.de/_nuxt/SourceSans3-It.BgLRS0hl.woff2 — 23.4 KiB — 40 ms — font-display: swap
SourceSans3-Regular.DCU... woff2 swap
Size 25 KB
Load time 105 ms
Start 779 ms
Risk FOUT — text flashes from fallback to web font
SourceSans3-Semibold.DZ... woff2 swap
Size 25 KB
Load time 105 ms
Start 779 ms
Risk FOUT — text flashes from fallback to web font
SourceSans3-Light.Da-3M... woff2 swap
Size 25 KB
Load time 106 ms
Start 779 ms
Risk FOUT — text flashes from fallback to web font
SourceSans3-It.BgLRS0hl... woff2 swap
Size 23 KB
Load time 40 ms
Start 927 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
—
preload
4
dns-prefetch
—
prefetch
—

4 resource hints configured

A
Page Weight Inventory
28 resources · 429 KB · 76 KB savings available
PASS
28 resources · 429 KB · 76 KB savings available
Info::
Within 1MB page-weight target
Got: 429 KB
Info::
~76 KB of savings available
Warning::
26 third-party resources (100% of weight)
28 resources · 428.9 KiB · 26 third-party Within 1MB page-weight target
JavaScript 52% · 222.1 KiB
Font 23% · 99.3 KiB
Image 10% · 44.4 KiB
Document 10% · 42.4 KiB
CSS 5% · 20.1 KiB
Other 0% · 652 B

~76.2 KiB of savings available

Remove unused JavaScript: 76.2 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
28 requests over 1299ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 2.1 s LCP 3.1 shttps://daad.de// https://daad.de/ — 301 — 58 B — 109 ms — h2https://www.daad.de/www.daad.de/ https://www.daad.de/ — 301 — 282 B — 56 ms — h2https://www.daad.de/de/www.daad.de/de/ https://www.daad.de/de/ — 307 — 57 B — 47 ms — http/1.1https://daad.de// https://daad.de/ — 301 — 0 B — 1 ms — h2https://www.daad.de/www.daad.de/ https://www.daad.de/ — 301 — 282 B — 61 ms — h2https://www.daad.de/de/www.daad.de/de/ https://www.daad.de/de/ — 200 — 41.8 KiB — 553 ms — h2https://www.daad.de/_nuxt/entry.DM7g1hQO.csswww.daad.de/_nuxt/entry.DM7g1hQO.cs... https://www.daad.de/_nuxt/entry.DM7g1hQO.css — 200 — 11.9 KiB — 78 ms — h2https://www.daad.de/_nuxt/header.DCjXPtoK.csswww.daad.de/_nuxt/header.DCjXPtoK.c... https://www.daad.de/_nuxt/header.DCjXPtoK.css — 200 — 6.3 KiB — 74 ms — h2https://www.daad.de/_nuxt/SourceSans3-Regular.DCUD6Pj3.woff2www.daad.de/_nuxt/SourceSans3-Regul... https://www.daad.de/_nuxt/SourceSans3-Regular.DCUD6Pj3.woff2 — 200 — 25.4 KiB — 105 ms — h2https://www.daad.de/_nuxt/SourceSans3-Semibold.DZC6a7a9.woff2www.daad.de/_nuxt/SourceSans3-Semib... https://www.daad.de/_nuxt/SourceSans3-Semibold.DZC6a7a9.woff2 — 200 — 25.4 KiB — 105 ms — h2https://www.daad.de/_nuxt/SourceSans3-Light.Da-3MQVS.woff2www.daad.de/_nuxt/SourceSans3-Light... https://www.daad.de/_nuxt/SourceSans3-Light.Da-3MQVS.woff2 — 200 — 25.1 KiB — 106 ms — h2https://www.daad.de/_nuxt/entry-CvhjTcfZ.jswww.daad.de/_nuxt/entry-CvhjTcfZ.js https://www.daad.de/_nuxt/entry-CvhjTcfZ.js — 200 — 28.4 KiB — 114 ms — h2https://api.daad.de/api/image/stgbgsm/media/daad_de/startseite/b%C3%BChne_immunologie.jpg.webpapi.daad.de/api/image/stgbgsm/media... https://api.daad.de/api/image/stgbgsm/media/daad_de/startseite/b%C3%BChne_immunologie.jpg.webp — 200 — 15.0 KiB — 112 ms — h2data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='55'%20height='55'%3E%3C/svg…www.w3.org/2000/svg'%20width='55'%2... data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='55'%20height='55'%3E%3C/svg… — 200 — 0 B — 0 ms — datahttps://www.daad.de/_nuxt/logo-small-light.BeMXrHNY.svgwww.daad.de/_nuxt/logo-small-light.... https://www.daad.de/_nuxt/logo-small-light.BeMXrHNY.svg — 200 — 1.1 KiB — 57 ms — h2https://www.daad.de/_nuxt/logo-small-dark.BjXioAOO.svgwww.daad.de/_nuxt/logo-small-dark.B... https://www.daad.de/_nuxt/logo-small-dark.BjXioAOO.svg — 200 — 1.1 KiB — 58 ms — h2https://www.daad.de/_nuxt/builds/meta/8c592d11-0940-4ad5-94ba-2a3ab6ada108.jsonwww.daad.de/_nuxt/builds/meta/8c592... https://www.daad.de/_nuxt/builds/meta/8c592d11-0940-4ad5-94ba-2a3ab6ada108.json — 200 — 537 B — 55 ms — h2https://www.daad.de/_nuxt/icons.DVqy6r_R.svgwww.daad.de/_nuxt/icons.DVqy6r_R.sv... https://www.daad.de/_nuxt/icons.DVqy6r_R.svg — 200 — 10.1 KiB — 56 ms — h2https://www.daad.de/_nuxt/sun.DdDgsm79.svgwww.daad.de/_nuxt/sun.DdDgsm79.svg https://www.daad.de/_nuxt/sun.DdDgsm79.svg — 200 — 1.6 KiB — 47 ms — h2https://www.daad.de/_nuxt/SourceSans3-It.BgLRS0hl.woff2www.daad.de/_nuxt/SourceSans3-It.Bg... https://www.daad.de/_nuxt/SourceSans3-It.BgLRS0hl.woff2 — 200 — 23.4 KiB — 40 ms — h2https://www.daad.de/_nuxt/header-DR17VLUa.jswww.daad.de/_nuxt/header-DR17VLUa.j... https://www.daad.de/_nuxt/header-DR17VLUa.js — 200 — 183.3 KiB — 79 ms — h2https://www.daad.de/_nuxt/Stage.DDbtyD9F.csswww.daad.de/_nuxt/Stage.DDbtyD9F.cs... https://www.daad.de/_nuxt/Stage.DDbtyD9F.css — 200 — 1.3 KiB — 36 ms — h2https://www.daad.de/_nuxt/Alert.Y6y9rON9.csswww.daad.de/_nuxt/Alert.Y6y9rON9.cs... https://www.daad.de/_nuxt/Alert.Y6y9rON9.css — 200 — 673 B — 37 ms — h2https://www.daad.de/_nuxt/CookieModal-C734mL_4.jswww.daad.de/_nuxt/CookieModal-C734m... https://www.daad.de/_nuxt/CookieModal-C734mL_4.js — 200 — 5.1 KiB — 36 ms — h2https://www.daad.de/favicon.icowww.daad.de/favicon.ico https://www.daad.de/favicon.ico — 200 — 15.4 KiB — 38 ms — h2https://www.daad.de/_nuxt/Stage-BUoqMm_h.jswww.daad.de/_nuxt/Stage-BUoqMm_h.js https://www.daad.de/_nuxt/Stage-BUoqMm_h.js — 200 — 2.6 KiB — 39 ms — h2https://www.daad.de/_nuxt/Announcement-_YacdomM.jswww.daad.de/_nuxt/Announcement-_Yac... https://www.daad.de/_nuxt/Announcement-_YacdomM.js — 200 — 827 B — 40 ms — h2https://www.daad.de/_nuxt/Alert-ffNMZmCj.jswww.daad.de/_nuxt/Alert-ffNMZmCj.js https://www.daad.de/_nuxt/Alert-ffNMZmCj.js — 200 — 1.9 KiB — 38 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 1492ms · 254KB · €16/mo
www.daad.de
Other
Costly
Execution 688ms
Transfer 28 KB
Monthly Cost €7/mo
www.daad.de
Other
Costly
Execution 442ms
Transfer 42 KB
Monthly Cost €5/mo
Unattributable
Other
Costly
Execution 247ms
Transfer 0 KB
Monthly Cost €3/mo
www.daad.de
Other
Optional
Execution 114ms
Transfer 183 KB
Unused 42%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.daad.de adds 688ms and costs ~€7/month
  • www.daad.de adds 442ms and costs ~€5/month
  • Unattributable adds 247ms and costs ~€3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.daad.de takes 688ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.daad.de takes 442ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 247ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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