Skip to content
https://uni-bielefeld.de

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
85
GRADE
B
FIX
2
REVIEW
6
PASS
7
INFO
2

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

Mobile Desktop
62
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
70
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.

3.52 s

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

8.42 s

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

165 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.

5.75 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.

8.53 s

Page Load Progression

412 ms
825 ms
1.2 s
1.6 s
2.1 s
2.5 s
2.9 s
3.3 s
Checks
17
7 PASS 6 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 (1.2 MiB of 1.2 MiB)
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.

B
Page Weight Budget
1.2 MB transferred, 39 requests
REVIEW
1.2 MB transferred, 39 requests
Info::
Page weighs 2.2 MB (1.2 MB transferred)
Info::
39 HTTP requests
Info::
Estimated 0.25 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
39 requests
0.25 g CO2 per page load
Images 774.6 KiB 64%
JavaScript 162.3 KiB 13%
Other 105.4 KiB 9%
Fonts 71.7 KiB 6%
CSS 61.9 KiB 5%
HTML 30.3 KiB 3%
Other 836 B 0%
Other 802 B 0%
0 2.4 MB 4.9 MB
Under budget
C
Image Optimization
Action
21 images, 0 KB saveable
REVIEW
21 images, 0 KB saveable
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/nw01... 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/ev0n... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uni-bielefeld.de/_internal/cimg!0/2vxi... 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/s44s... 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!0/6cd7... 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/g9j2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
21 images 775 KB
0 oversized -0 KB
19 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

C
JS Execution Cost
Action
1037ms total JS execution
REVIEW
1037ms total JS execution
Warning::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 460ms CPU time
Info::
Unattributable: 205ms CPU time
Info::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 165ms CPU time
Info::
https://www.uni-bielefeld.de/: 152ms CPU time
Info::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 55ms CPU time
Warning::
Third-party scripts: 1037ms (100% of total)

Main Thread Breakdown

Script Evaluation 35% Other 32% Style & Layout 23% Script Parsing & Compilation 4% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.js460ms270ms27ms3rd
Unattributable205ms6ms0ms3rd
https://www.uni-bielefeld.de/(cache-forever,mtime=1776688696)/assets/js/libs.js165ms16ms15ms3rd
https://www.uni-bielefeld.de/152ms19ms3ms3rd
https://www.uni-bielefeld.de/(cache-forever,mtime=1776688681)/assets/vendor/hyphenopoly/Hyphenopoly_Loader.js55ms38ms1ms3rd
B
JS Bundles
6 scripts, 80 KB unused
REVIEW
6 scripts, 80 KB unused
Warning::
https://www.uni-bielefeld.de/(cache-forever,mtime=...: 43 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: 80 KB
80 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.uni-bielefeld.de/(cache-forever,mtime=1776692512)/assets/js/app.js92 KB43 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

B
Page Weight Inventory
39 resources · 1.2 MB · 80 KB savings available
REVIEW
39 resources · 1.2 MB · 80 KB savings available
Warning::
Page weight 184 KB over 1MB target
Got: 1.2 MB Expected: ≤ 1 MB
Info::
~80 KB of savings available
Warning::
38 third-party resources (100% of weight)
Info::
1 resources over 200KB
39 resources · 1.2 MiB · 38 third-party 183.8 KiB over 1MB target
Image 64% · 775.1 KiB
JavaScript 13% · 162.3 KiB
Other 9% · 106.2 KiB
Font 6% · 71.7 KiB
CSS 5% · 61.9 KiB
Document 3% · 30.5 KiB

~80.4 KiB of savings available

Remove unused JavaScript: 80.4 KiB
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+
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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 3.5 s LCP 8.4 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 — 143 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 — 94 ms — font-display: swap
Lelo-Regular.woff2 woff2 swap
Size 35 KB
Load time 143 ms
Start 278 ms
Risk FOUT — text flashes from fallback to web font
Lelo-Bold.woff2 woff2 swap
Size 37 KB
Load time 94 ms
Start 687 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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
—
preload
1
dns-prefetch
—
prefetch
—

1 resource hints configured

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
39 requests over 1457ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 3.5 s LCP 8.4 shttps://uni-bielefeld.de// https://uni-bielefeld.de/ — 301 — 252 B — 114 ms — http/1.1https://www.uni-bielefeld.de/www.uni-bielefeld.de/ https://www.uni-bielefeld.de/ — 200 — 30.3 KiB — 187 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 — 143 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 — 63 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 — 107 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 — 391 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 — 102 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 — 67 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 — 37 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 — 318 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 — 384 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 — 110 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 — 181 ms — http/1.1data:image/gif;base64,R0lGODlhAQABAAAAADs=data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAAAAADs= — 200 — 0 B — 0 ms — datadata: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/_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 — 47 ms — http/1.1https://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 — 65 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 — 71 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/nhx3cjrzr7rjrk0750a6q95zenb84rl.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/nhx3cjrzr7rjrk0750a6q95zenb84rl.jpeg — 200 — 50.4 KiB — 91 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/7nh9coe0va9sfa93isk7hrsad4ajtbm.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/7nh9coe0va9sfa93isk7hrsad4ajtbm.jpeg — 200 — 61.1 KiB — 133 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/rtsm4zwzaoclwyih7ytflcega81vuty.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/rtsm4zwzaoclwyih7ytflcega81vuty.jpeg — 200 — 89.2 KiB — 110 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 — 37 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 — 40 ms — http/1.1https://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 — 94 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 — 34 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 — 38 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 3.5 s LCP 8.4 shttps://uni-bielefeld.de// https://uni-bielefeld.de/ — 301 — 252 B — 114 ms — http/1.1https://www.uni-bielefeld.de/www.uni-bielefeld.de/ https://www.uni-bielefeld.de/ — 200 — 30.3 KiB — 187 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 — 143 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 — 63 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 — 107 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 — 391 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 — 102 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 — 67 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 — 37 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 — 318 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 — 384 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 — 110 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 — 181 ms — http/1.1data:image/gif;base64,R0lGODlhAQABAAAAADs=data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAAAAADs= — 200 — 0 B — 0 ms — datadata: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/_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 — 47 ms — http/1.1https://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 — 65 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 — 71 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/nhx3cjrzr7rjrk0750a6q95zenb84rl.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/nhx3cjrzr7rjrk0750a6q95zenb84rl.jpeg — 200 — 50.4 KiB — 91 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/7nh9coe0va9sfa93isk7hrsad4ajtbm.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/7nh9coe0va9sfa93isk7hrsad4ajtbm.jpeg — 200 — 61.1 KiB — 133 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/rtsm4zwzaoclwyih7ytflcega81vuty.jpegwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/rtsm4zwzaoclwyih7ytflcega81vuty.jpeg — 200 — 89.2 KiB — 110 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 — 37 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 — 40 ms — http/1.1https://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 — 94 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 — 34 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 — 38 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/1.1https://www.uni-bielefeld.de/_internal/cimg!0/miaxxruf94r02vivh4n4blf0d3l6mjt.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/miaxxruf94r02vivh4n4blf0d3l6mjt.png — 200 — 5.2 KiB — 38 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/g9j2mevv0gdzla0w5qkin59eoraiu2o.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/g9j2mevv0gdzla0w5qkin59eoraiu2o.png — 200 — 6.4 KiB — 38 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/k8c2n3pt7ohlnqw1rcq54gq99zmirg7.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/k8c2n3pt7ohlnqw1rcq54gq99zmirg7.png — 200 — 4.7 KiB — 35 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688731)/assets/img/favicons/favicon.icowww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688731)/assets/img/favicons/favicon.ico — 200 — 584 B — 35 ms — http/1.1https://www.uni-bielefeld.de/(cache-forever,mtime=1776688706)/assets/css/print.csswww.uni-bielefeld.de/(cache-forever... https://www.uni-bielefeld.de/(cache-forever,mtime=1776688706)/assets/css/print.css — 200 — 12.9 KiB — 35 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/nw016ziwkki8kcdknxx3msv4eylqtx0.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/nw016ziwkki8kcdknxx3msv4eylqtx0.png — 200 — 15.8 KiB — 37 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/s44sazbyykd9sts0qf4zs4lscrjvfea.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/s44sazbyykd9sts0qf4zs4lscrjvfea.png — 200 — 10.6 KiB — 37 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/ev0nbw1s5rvud0hbmeesa8z1dgt2gpt.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/ev0nbw1s5rvud0hbmeesa8z1dgt2gpt.png — 200 — 9.4 KiB — 40 ms — http/1.1https://www.uni-bielefeld.de/_internal/cimg!0/2vxivaa1ha3mqj4fc4zhbu6p4c98ere.pngwww.uni-bielefeld.de/_internal/cimg... https://www.uni-bielefeld.de/_internal/cimg!0/2vxivaa1ha3mqj4fc4zhbu6p4c98ere.png — 200 — 11.5 KiB — 40 ms — http/1.1
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 1037ms · 181KB · €11/mo
www.uni-bielefeld.de
Other
Costly
Execution 460ms
Transfer 92 KB
Unused 48%
Monthly Cost €5/mo
Unattributable
Other
Costly
Execution 205ms
Transfer 0 KB
Monthly Cost €2/mo
www.uni-bielefeld.de
Other
Optional
Execution 165ms
Transfer 56 KB
Unused 67%
Monthly Cost €2/mo
www.uni-bielefeld.de
Other
Optional
Execution 152ms
Transfer 30 KB
Monthly Cost €2/mo
www.uni-bielefeld.de
Other
Optional
Execution 55ms
Transfer 3 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.uni-bielefeld.de adds 460ms and costs ~€5/month
  • Unattributable adds 205ms and costs ~€2/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.uni-bielefeld.de takes 460ms 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 205ms 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

67% of www.uni-bielefeld.de's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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.

Send Feedback