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https://uni-bielefeld.de

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
85
GRADE
B
FIX
3
REVIEW
4
PASS
6
INFO
2

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

Mobile Desktop
95
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
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.

583 ms

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

1.39 s

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

0 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.

1.41 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.

1.40 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
6 PASS 4 REVIEW 3 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 (1.5 MiB of 1.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
35 resources · 1.5 MB · 81 KB savings available
FIX
35 resources · 1.5 MB · 81 KB savings available
Warning::
Page weight 470 KB over 1MB target
Got: 1.5 MB Expected: ≤ 1 MB
Info::
~81 KB of savings available
Warning::
34 third-party resources (100% of weight)
Info::
2 resources over 200KB
35 resources · 1.5 MiB · 34 third-party 469.8 KiB over 1MB target
Image 71% · 1.0 MiB
JavaScript 11% · 162.3 KiB
Other 7% · 106.2 KiB
Font 5% · 71.7 KiB
CSS 4% · 61.9 KiB
Document 2% · 30.5 KiB

~80.5 KiB of savings available

Remove unused JavaScript: 80.5 KiB
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.

B
Page Weight Budget
1.5 MB transferred, 35 requests
REVIEW
1.5 MB transferred, 35 requests
Info::
Page weighs 2.4 MB (1.5 MB transferred)
Warning::
Images are 1.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.0 MB
Info::
35 HTTP requests
Info::
Estimated 0.31 g CO2 per page load
1.5 MB / 2.4 MB budget
1.5 MB transferred
35 requests
0.31 g CO2 per page load
Images 1.0 MiB 71%
JavaScript 162.3 KiB 11%
Other 105.4 KiB 7%
Fonts 71.7 KiB 5%
CSS 61.9 KiB 4%
HTML 30.2 KiB 2%
Other 836 B 0%
Other 802 B 0%
0 2.4 MB 4.9 MB
Under budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

C
Image Optimization
Action
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/miax... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/g9j2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/k8c2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
data:image/gif;base64,R0lGODlhAQABAAAAADs= is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/hv47... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/q648... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/j6e8... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/e751... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/7ylk... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/6cd7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
17 images 1.0 MB
0 oversized -0 KB
15 legacy format
10 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Bundles
6 scripts, 81 KB unused
REVIEW
6 scripts, 81 KB unused
Warning::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 44 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 37 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 81 KB
81 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.js92 KB44 KB (48%)✓3rd
https://www.uni-bielefeld.de/(cache-forever,mtime=1776688696)/assets/js/libs.js56 KB37 KB (67%)✓3rd
https://www.uni-bielefeld.de/(cache-forever,mtime=1776688695)/assets/js/head.js4 KB—✓3rd
https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly_Loader.js3 KB—✓3rd
https://www.uni-bielefeld.de/_ext/js/ubf-cookie-consent/ubf_cookieconsent.min.js3 KB—✓3rd
https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly.js4 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

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+
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+
JS Execution Cost
201ms total JS execution
PASS
201ms total JS execution
Info::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 108ms CPU time
Info::
https://www.uni-bielefeld.de/: 93ms CPU time
Warning::
Third-party scripts: 201ms (100% of total)

Main Thread Breakdown

Other 31% Script Evaluation 29% Style & Layout 28% Rendering 5% Script Parsing & Compilation 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.js108ms67ms7ms3rd
https://www.uni-bielefeld.de/93ms4ms1ms3rd
A+
Font Loading
2 fonts (72 KB)
PASS
2 fonts (72 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

72 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 583 ms LCP 1.4 shttps://www.uni-bielefeld.de/(cache-forever,mtime=1776688679)/assets/fonts/Lelo-Regular.woff2Lelo-Regular.woff2 https://www.uni-bielefeld.de/(cache-forever,mtime=1776688679)/assets/fonts/Lelo-Regular.woff2 — 34.8 KiB — 96 ms — font-display: swaphttps://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/fonts/Lelo-Bold.woff2Lelo-Bold.woff2 https://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/fonts/Lelo-Bold.woff2 — 36.9 KiB — 54 ms — font-display: swap
Lelo-Regular.woff2 woff2 swap
Size 35 KB
Load time 96 ms
Start 723 ms
Risk FOUT — text flashes from fallback to web font
Lelo-Bold.woff2 woff2 swap
Size 37 KB
Load time 54 ms
Start 870 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
35 requests over 1412ms
INFO
0 ms 500 ms 1.0 s FCP 583 ms LCP 1.4 shttps://uni-bielefeld.de// https://uni-bielefeld.de/ — 301 — 252 B — 107 ms — http/1.1https://www.uni-bielefeld.de/www.uni-bielefeld.de/ https://www.uni-bielefeld.de/ — 200 — 30.2 KiB — 640 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688679)/assets/fonts/Lelo-Regular.woff2www.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688679)/assets/fonts/Lelo-Regular.woff2 — 200 — 34.8 KiB — 96 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/css/critical.csswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/css/critical.css — 200 — 22.4 KiB — 61 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688695)/assets/js/head.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688695)/assets/js/head.js — 200 — 3.8 KiB — 108 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly_Loader.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly_Loader.js — 200 — 3.3 KiB — 108 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688732)/assets/img/favicons/site.webmanifestwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688732)/assets/img/favicons/site.webmanifest — 200 — 802 B — 106 ms — http/1.1https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/ZiF-GRP-Postcolonial-and-Postsocialist-Interdependencies-02701-400x400.jpgaktuell.uni-bielefeld.de/wp-content... https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/ZiF-GRP-Postcolonial-and-Postsocialist-Interdependencies-02701-400x400.jpg — 200 — 47.3 KiB — 186 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/de.hpbwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/de.hpb — 200 — 81.4 KiB — 100 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/en-us.hpbwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/en-us.hpb — 200 — 22.7 KiB — 39 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/hyphenEngine.wasmwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/hyphenEngine.wasm — 200 — 1.3 KiB — 38 ms — http/1.1https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/DSC01301-400x400.jpgaktuell.uni-bielefeld.de/wp-content... https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/DSC01301-400x400.jpg — 200 — 82.9 KiB — 161 ms — http/1.1https://aktuell.uni-bielefeld.de/wp-content/themes/wp-unibi-theme-2021-1/img/default-img/fallback_graphic_3.jpgaktuell.uni-bielefeld.de/wp-content... https://aktuell.uni-bielefeld.de/wp-content/themes/wp-unibi-theme-2021-1/img/default-img/fallback_graphic_3.jpg — 200 — 321.5 KiB — 253 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688696)/assets/js/libs.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688696)/assets/js/libs.js — 200 — 55.8 KiB — 68 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.js — 200 — 91.8 KiB — 112 ms — http/1.1https://www.uni-bielefeld.de/_ext/js/ubf-cookie-consent/ubf_cookieconsent.min.jswww.uni-bielefeld.de/_ext/js/ubf-co... https://www.uni-bielefeld.de/_ext/js/ubf-cookie-consent/ubf_cookieconsent.min.js — 200 — 3.3 KiB — 73 ms — http/1.1data:image/gif;base64,R0lGODlhAQABAAAAADs=data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAAAAADs= — 200 — 0 B — 0 ms — datahttps://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/fonts/Lelo-Bold.woff2www.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/fonts/Lelo-Bold.woff2 — 200 — 36.9 KiB — 54 ms — http/1.1data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7 — 200 — 0 B — 0 ms — datahttps://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly.js — 200 — 4.4 KiB — 64 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688722)/assets/css/non-critical.csswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688722)/assets/css/non-critical.css — 200 — 26.6 KiB — 41 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/n94djbeo8bvnlz5h7ow3r4nnhgk04m8.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/n94djbeo8bvnlz5h7ow3r4nnhgk04m8.jpeg — 200 — 140.3 KiB — 112 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/pvl4lv1ofjr0i3oq7h52siim9r05fbl.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/pvl4lv1ofjr0i3oq7h52siim9r05fbl.jpeg — 200 — 140.9 KiB — 104 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/fxp2afeht1wtanobfmgsht2jpp4tmed.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/fxp2afeht1wtanobfmgsht2jpp4tmed.jpeg — 200 — 252.8 KiB — 234 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/7ylkxr7j2xdl0kj24omr4ymf6ay2ggg.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/7ylkxr7j2xdl0kj24omr4ymf6ay2ggg.png — 200 — 19.9 KiB — 36 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/hv477gpo20wa9hse4rhlcaj5ugutwh5.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/hv477gpo20wa9hse4rhlcaj5ugutwh5.png — 200 — 7.5 KiB — 36 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/6cd7vm8st92aoqehbr209twoga6jnu0.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/6cd7vm8st92aoqehbr209twoga6jnu0.png — 200 — 9.4 KiB — 42 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/q648sw6ek89zfl4lbisrq4zj5in5f1d.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/q648sw6ek89zfl4lbisrq4zj5in5f1d.png — 200 — 5.5 KiB — 36 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/j6e833r20btb4jr4r4jduzgjcr6r49l.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/j6e833r20btb4jr4r4jduzgjcr6r49l.png — 200 — 12.1 KiB — 36 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/e751mmsia2949y9ozich6p8y7b7corv.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/e751mmsia2949y9ozich6p8y7b7corv.png — 200 — 4.3 KiB — 35 ms — http/1.1
0 ms 500 ms 1.0 s FCP 583 ms LCP 1.4 shttps://uni-bielefeld.de// https://uni-bielefeld.de/ — 301 — 252 B — 107 ms — http/1.1https://www.uni-bielefeld.de/www.uni-bielefeld.de/ https://www.uni-bielefeld.de/ — 200 — 30.2 KiB — 640 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688679)/assets/fonts/Lelo-Regular.woff2www.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688679)/assets/fonts/Lelo-Regular.woff2 — 200 — 34.8 KiB — 96 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/css/critical.csswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688716)/assets/css/critical.css — 200 — 22.4 KiB — 61 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688695)/assets/js/head.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688695)/assets/js/head.js — 200 — 3.8 KiB — 108 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly_Loader.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly_Loader.js — 200 — 3.3 KiB — 108 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688732)/assets/img/favicons/site.webmanifestwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688732)/assets/img/favicons/site.webmanifest — 200 — 802 B — 106 ms — http/1.1https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/ZiF-GRP-Postcolonial-and-Postsocialist-Interdependencies-02701-400x400.jpgaktuell.uni-bielefeld.de/wp-content... https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/ZiF-GRP-Postcolonial-and-Postsocialist-Interdependencies-02701-400x400.jpg — 200 — 47.3 KiB — 186 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/de.hpbwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/de.hpb — 200 — 81.4 KiB — 100 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/en-us.hpbwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/patterns/en-us.hpb — 200 — 22.7 KiB — 39 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/hyphenEngine.wasmwww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/hyphenEngine.wasm — 200 — 1.3 KiB — 38 ms — http/1.1https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/DSC01301-400x400.jpgaktuell.uni-bielefeld.de/wp-content... https://aktuell.uni-bielefeld.de/wp-content/uploads/2026/04/DSC01301-400x400.jpg — 200 — 82.9 KiB — 161 ms — http/1.1https://aktuell.uni-bielefeld.de/wp-content/themes/wp-unibi-theme-2021-1/img/default-img/fallback_graphic_3.jpgaktuell.uni-bielefeld.de/wp-content... https://aktuell.uni-bielefeld.de/wp-content/themes/wp-unibi-theme-2021-1/img/default-img/fallback_graphic_3.jpg — 200 — 321.5 KiB — 253 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688696)/assets/js/libs.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688696)/assets/js/libs.js — 200 — 55.8 KiB — 68 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.jswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.js — 200 — 91.8 KiB — 112 ms — http/1.1https://www.uni-bielefeld.de/_ext/js/ubf-cookie-consent/ubf_cookieconsent.min.jswww.uni-bielefeld.de/_ext/js/ubf-co... 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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 201ms · 122KB · €2/mo
www.uni-bielefeld.de
Other
Optional
Execution 108ms
Transfer 92 KB
Unused 48%
Monthly Cost €1/mo
www.uni-bielefeld.de
Other
Optional
Execution 93ms
Transfer 30 KB
Monthly Cost €1/mo

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

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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