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

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
4
PASS
6
INFO
2

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

92
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
61
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.

791 ms

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

1.74 s

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

12 ms

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

0.002

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

929 ms

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

1.75 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 (2.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
17 scripts, 333 KB unused
FIX
17 scripts, 333 KB unused
Warning::
https://www.uni-frankfurt.de/_next/static/chunks/0...: 258 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.uni-frankfurt.de/_next/static/chunks/1...: 32 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.uni-frankfurt.de/_next/static/chunks/1...: 23 KB unused (33%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.uni-frankfurt.de/_next/static/chunks/0...: 20 KB unused (31%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 333 KB
333 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.uni-frankfurt.de/_next/static/chunks/031t55d50dcne.js378 KB258 KB (70%)3rd
https://www.uni-frankfurt.de/_next/static/chunks/16rt1ahkl31gy.js32 KB32 KB (100%)3rd
https://www.uni-frankfurt.de/_next/static/chunks/162bln8.yrem6.js71 KB23 KB (33%)3rd
https://www.uni-frankfurt.de/_next/static/chunks/0z9cr3cwarnld.js67 KB20 KB (31%)3rd
https://www.uni-frankfurt.de/_next/static/chunks/14u8kemvx8p1x.js32 KB3rd
https://www.uni-frankfurt.de/_next/static/chunks/01xlw8hd842-c.js2 KB3rd
https://www.uni-frankfurt.de/_next/static/chunks/0d3shmwh5_nmn.js13 KB3rd
https://www.uni-frankfurt.de/_next/static/chunks/0z2~.3~dcipw1.js11 KB3rd
https://www.uni-frankfurt.de/_next/static/chunks/0osewv~m3m46w.js3 KB3rd
https://www.uni-frankfurt.de/_next/static/chunks/0yrssa_j9l454.js13 KB3rd

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

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

D
Page Weight Inventory
Action
56 resources · 2.0 MB · 333 KB savings available
FIX
56 resources · 2.0 MB · 333 KB savings available
Warning::
Page weight 1000 KB over 1MB target
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~333 KB of savings available
Warning::
55 third-party resources (100% of weight)
Info::
3 resources over 200KB
56 resources · 2.0 MiB · 55 third-party 999.5 KiB over 1MB target
Image 51% · 1.0 MiB
JavaScript 35% · 711.2 KiB
Font 10% · 194.0 KiB
Document 3% · 67.7 KiB
CSS 1% · 20.7 KiB
Other 0% · 4.1 KiB

~333.4 KiB of savings available

Remove unused JavaScript: 333.4 KiB
C
Page Weight Budget
Action
2.0 MB transferred, 56 requests
REVIEW
2.0 MB transferred, 56 requests
Info::
Page weighs 3.9 MB (2.0 MB transferred)
Warning::
JavaScript is 711 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 711 KB
Info::
56 HTTP requests
Info::
Estimated 0.41 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
56 requests
0.41 g CO2 per page load
Images 1021.7 KiB 50%
JavaScript 711.2 KiB 35%
Fonts 194.0 KiB 10%
HTML 67.7 KiB 3%
CSS 20.7 KiB 1%
Other 5.5 KiB 0%
Other 2.7 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

B
Image Optimization
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Info::
All images are well-optimized
13 images 1022 KB
0 oversized -0 KB
5 legacy format
0 missing dimensions CLS risk
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
Cache-Control header is set
Got: no-cache
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache

DirectiveValueMeaning
no-cacheCache but always revalidate first
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
379ms total JS execution
PASS
379ms total JS execution
Info::
https://www.uni-frankfurt.de/_next/static/chunks/1...: 204ms CPU time
Info::
https://www.uni-frankfurt.de/en: 118ms CPU time
Info::
Unattributable: 57ms CPU time
Warning::
Third-party scripts: 379ms (100% of total)

Main Thread Breakdown

Script Evaluation 49% Other 19% Style & Layout 14% Script Parsing & Compilation 12% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://www.uni-frankfurt.de/_next/static/chunks/162bln8.yrem6.js204ms184ms6ms3rd
https://www.uni-frankfurt.de/en118ms3ms7ms3rd
Unattributable57ms3ms0ms3rd
A+
Font Loading
4 fonts (194 KB)
PASS
4 fonts (194 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

194 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 500 ms 1.0 s 1.5 s FCP 791 ms LCP 1.7 shttps://www.uni-frankfurt.de/_next/static/media/OpenSans-SemiBold.0tzamzrz0ty_-.woff2OpenSans-SemiBold.0tzam... https://www.uni-frankfurt.de/_next/static/media/OpenSans-SemiBold.0tzamzrz0ty_-.woff2 — 62.6 KiB — 40 ms — font-display: swaphttps://www.uni-frankfurt.de/_next/static/media/Satoshi-Variable.0we6-2px855vh.woff2Satoshi-Variable.0we6-2... https://www.uni-frankfurt.de/_next/static/media/Satoshi-Variable.0we6-2px855vh.woff2 — 42.0 KiB — 39 ms — font-display: swaphttps://www.uni-frankfurt.de/_next/static/media/OpenSans-Regular.0ukipt-8x~tfy.woff2OpenSans-Regular.0ukipt... https://www.uni-frankfurt.de/_next/static/media/OpenSans-Regular.0ukipt-8x~tfy.woff2 — 46.3 KiB — 58 ms — font-display: swaphttps://www.uni-frankfurt.de/_next/static/media/Satoshi-VariableItalic.14_dcl7erp6w3.woff2Satoshi-VariableItalic.... https://www.uni-frankfurt.de/_next/static/media/Satoshi-VariableItalic.14_dcl7erp6w3.woff2 — 43.2 KiB — 57 ms — font-display: swap
OpenSans-SemiBold.0tzam... woff2 swap
Size 63 KB
Load time 40 ms
Start 379 ms
Risk FOUT — text flashes from fallback to web font
Satoshi-Variable.0we6-2... woff2 swap
Size 42 KB
Load time 39 ms
Start 379 ms
Risk FOUT — text flashes from fallback to web font
OpenSans-Regular.0ukipt... woff2 swap
Size 46 KB
Load time 58 ms
Start 379 ms
Risk FOUT — text flashes from fallback to web font
Satoshi-VariableItalic.... woff2 swap
Size 43 KB
Load time 57 ms
Start 379 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
56 requests over 1075ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 791 ms LCP 1.7 shttps://uni-frankfurt.de// https://uni-frankfurt.de/ — 302 — 58 B — 71 ms — h2http://www.uni-frankfurt.de/www.uni-frankfurt.de/ http://www.uni-frankfurt.de/ — 307 — 0 B — 2 ms — http/1.1https://www.uni-frankfurt.de/www.uni-frankfurt.de/ https://www.uni-frankfurt.de/ — 307 — 272 B — 54 ms — h2https://www.uni-frankfurt.de/enwww.uni-frankfurt.de/en https://www.uni-frankfurt.de/en — 200 — 67.7 KiB — 148 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/13sa1v58aw7.4.csswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/13sa1v58aw7.4.css — 200 — 16.0 KiB — 37 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/12iocgj.jxy4f.csswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/12iocgj.jxy4f.css — 200 — 1.8 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0sh3vp.tmsnwz.csswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0sh3vp.tmsnwz.css — 200 — 2.9 KiB — 36 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0osewv~m3m46w.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0osewv~m3m46w.js — 200 — 2.6 KiB — 32 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0munpt3~opz3f.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0munpt3~opz3f.js — 200 — 15.9 KiB — 34 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0qtz4meecy2cb.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0qtz4meecy2cb.js — 200 — 36.9 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/162bln8.yrem6.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/162bln8.yrem6.js — 200 — 71.1 KiB — 58 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/turbopack-0o5427~0.02ka.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/turbopack-0o5427~0.02ka.js — 200 — 4.4 KiB — 53 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/01xlw8hd842-c.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/01xlw8hd842-c.js — 200 — 1.8 KiB — 54 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datahttps://www.uni-frankfurt.de/_next/static/chunks/0d3shmwh5_nmn.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0d3shmwh5_nmn.js — 200 — 13.0 KiB — 33 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0z2~.3~dcipw1.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0z2~.3~dcipw1.js — 200 — 11.2 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/14u8kemvx8p1x.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/14u8kemvx8p1x.js — 200 — 31.9 KiB — 34 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0yrssa_j9l454.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0yrssa_j9l454.js — 200 — 12.8 KiB — 33 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0fsd8gxfjg5jw.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0fsd8gxfjg5jw.js — 200 — 6.8 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0a8.e6xc6gmla.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0a8.e6xc6gmla.js — 200 — 12.8 KiB — 33 ms — h2https://assets.uni-frankfurt.de/.imaging/focalpoint/panorama/3840/dam/jcr:1ae93810-7eaa-4e89-addd-71c1695bee19/biologie-insekten-riedberg-2025-katrin-binner-1177.jpgassets.uni-frankfurt.de/.imaging/fo... https://assets.uni-frankfurt.de/.imaging/focalpoint/panorama/3840/dam/jcr:1ae93810-7eaa-4e89-addd-71c1695bee19/biologie-insekten-riedberg-2025-katrin-binner-1177.jpg — 200 — 211.1 KiB — 86 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0dag6ci0w~_dj.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0dag6ci0w~_dj.js — 200 — 2.0 KiB — 32 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/031t55d50dcne.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/031t55d50dcne.js — 200 — 378.0 KiB — 81 ms — h2https://www.uni-frankfurt.de/_next/static/media/OpenSans-SemiBold.0tzamzrz0ty_-.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/OpenSans-SemiBold.0tzamzrz0ty_-.woff2 — 200 — 62.6 KiB — 40 ms — h2https://www.uni-frankfurt.de/_next/static/media/Satoshi-Variable.0we6-2px855vh.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/Satoshi-Variable.0we6-2px855vh.woff2 — 200 — 42.0 KiB — 39 ms — h2https://www.uni-frankfurt.de/_next/static/media/OpenSans-Regular.0ukipt-8x~tfy.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/OpenSans-Regular.0ukipt-8x~tfy.woff2 — 200 — 46.3 KiB — 58 ms — h2https://www.uni-frankfurt.de/_next/static/media/Satoshi-VariableItalic.14_dcl7erp6w3.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/Satoshi-VariableItalic.14_dcl7erp6w3.woff2 — 200 — 43.2 KiB — 57 ms — h2
0 ms 500 ms 1.0 s 1.5 s FCP 791 ms LCP 1.7 shttps://uni-frankfurt.de// https://uni-frankfurt.de/ — 302 — 58 B — 71 ms — h2http://www.uni-frankfurt.de/www.uni-frankfurt.de/ http://www.uni-frankfurt.de/ — 307 — 0 B — 2 ms — http/1.1https://www.uni-frankfurt.de/www.uni-frankfurt.de/ https://www.uni-frankfurt.de/ — 307 — 272 B — 54 ms — h2https://www.uni-frankfurt.de/enwww.uni-frankfurt.de/en https://www.uni-frankfurt.de/en — 200 — 67.7 KiB — 148 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/13sa1v58aw7.4.csswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/13sa1v58aw7.4.css — 200 — 16.0 KiB — 37 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/12iocgj.jxy4f.csswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/12iocgj.jxy4f.css — 200 — 1.8 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0sh3vp.tmsnwz.csswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0sh3vp.tmsnwz.css — 200 — 2.9 KiB — 36 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0osewv~m3m46w.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0osewv~m3m46w.js — 200 — 2.6 KiB — 32 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0munpt3~opz3f.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0munpt3~opz3f.js — 200 — 15.9 KiB — 34 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0qtz4meecy2cb.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0qtz4meecy2cb.js — 200 — 36.9 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/162bln8.yrem6.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/162bln8.yrem6.js — 200 — 71.1 KiB — 58 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/turbopack-0o5427~0.02ka.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/turbopack-0o5427~0.02ka.js — 200 — 4.4 KiB — 53 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/01xlw8hd842-c.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/01xlw8hd842-c.js — 200 — 1.8 KiB — 54 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo…www.w3.org/2000/svg' %3E%3Cfilter i... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Cfilter id='b' colo… — 200 — 0 B — 0 ms — datahttps://www.uni-frankfurt.de/_next/static/chunks/0d3shmwh5_nmn.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0d3shmwh5_nmn.js — 200 — 13.0 KiB — 33 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0z2~.3~dcipw1.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0z2~.3~dcipw1.js — 200 — 11.2 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/14u8kemvx8p1x.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/14u8kemvx8p1x.js — 200 — 31.9 KiB — 34 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0yrssa_j9l454.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0yrssa_j9l454.js — 200 — 12.8 KiB — 33 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0fsd8gxfjg5jw.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0fsd8gxfjg5jw.js — 200 — 6.8 KiB — 35 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0a8.e6xc6gmla.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0a8.e6xc6gmla.js — 200 — 12.8 KiB — 33 ms — h2https://assets.uni-frankfurt.de/.imaging/focalpoint/panorama/3840/dam/jcr:1ae93810-7eaa-4e89-addd-71c1695bee19/biologie-insekten-riedberg-2025-katrin-binner-1177.jpgassets.uni-frankfurt.de/.imaging/fo... https://assets.uni-frankfurt.de/.imaging/focalpoint/panorama/3840/dam/jcr:1ae93810-7eaa-4e89-addd-71c1695bee19/biologie-insekten-riedberg-2025-katrin-binner-1177.jpg — 200 — 211.1 KiB — 86 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0dag6ci0w~_dj.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0dag6ci0w~_dj.js — 200 — 2.0 KiB — 32 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/031t55d50dcne.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/031t55d50dcne.js — 200 — 378.0 KiB — 81 ms — h2https://www.uni-frankfurt.de/_next/static/media/OpenSans-SemiBold.0tzamzrz0ty_-.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/OpenSans-SemiBold.0tzamzrz0ty_-.woff2 — 200 — 62.6 KiB — 40 ms — h2https://www.uni-frankfurt.de/_next/static/media/Satoshi-Variable.0we6-2px855vh.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/Satoshi-Variable.0we6-2px855vh.woff2 — 200 — 42.0 KiB — 39 ms — h2https://www.uni-frankfurt.de/_next/static/media/OpenSans-Regular.0ukipt-8x~tfy.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/OpenSans-Regular.0ukipt-8x~tfy.woff2 — 200 — 46.3 KiB — 58 ms — h2https://www.uni-frankfurt.de/_next/static/media/Satoshi-VariableItalic.14_dcl7erp6w3.woff2www.uni-frankfurt.de/_next/static/m... https://www.uni-frankfurt.de/_next/static/media/Satoshi-VariableItalic.14_dcl7erp6w3.woff2 — 200 — 43.2 KiB — 57 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/16rt1ahkl31gy.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/16rt1ahkl31gy.js — 200 — 32.4 KiB — 45 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/094kafce4gff6.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/094kafce4gff6.js — 200 — 11.1 KiB — 35 ms — h2https://www.uni-frankfurt.de/goethe_logo_white.svgwww.uni-frankfurt.de/goethe_logo_wh... https://www.uni-frankfurt.de/goethe_logo_white.svg — 200 — 7.0 KiB — 55 ms — h2https://www.uni-frankfurt.de/fallback_yellow.svgwww.uni-frankfurt.de/fallback_yello... https://www.uni-frankfurt.de/fallback_yellow.svg — 200 — 16.8 KiB — 59 ms — h2https://www.uni-frankfurt.de/fallback_blue.svgwww.uni-frankfurt.de/fallback_blue.... https://www.uni-frankfurt.de/fallback_blue.svg — 200 — 16.8 KiB — 143 ms — h2https://www.uni-frankfurt.de/fallback_red.svgwww.uni-frankfurt.de/fallback_red.s... https://www.uni-frankfurt.de/fallback_red.svg — 200 — 16.8 KiB — 79 ms — h2https://www.uni-frankfurt.de/fallback_white.svgwww.uni-frankfurt.de/fallback_white... https://www.uni-frankfurt.de/fallback_white.svg — 200 — 16.8 KiB — 56 ms — h2https://www.uni-frankfurt.de/favicon.icowww.uni-frankfurt.de/favicon.ico https://www.uni-frankfurt.de/favicon.ico — 200 — 925 B — 54 ms — h2https://www.uni-frankfurt.de/_next/static/chunks/0z9cr3cwarnld.jswww.uni-frankfurt.de/_next/static/c... https://www.uni-frankfurt.de/_next/static/chunks/0z9cr3cwarnld.js — 200 — 66.6 KiB — 35 ms — h2https://assets.uni-frankfurt.de/.imaging/default/dam/puk-news/beitragsbild-buergerveranstaltung-cobic-hirnforschungszentrum-c-shutterstock-ai-generator-1920x1080.jpg/jcr:contentassets.uni-frankfurt.de/.imaging/de... https://assets.uni-frankfurt.de/.imaging/default/dam/puk-news/beitragsbild-buergerveranstaltung-cobic-hirnforschungszentrum-c-shutterstock-ai-generator-1920x1080.jpg/jcr:content — 200 — 315 B — 112 ms — h2https://assets.uni-frankfurt.de/.imaging/default/dam/puk-news/beitragsbild-exzellenzcluster-scale-auftaktveranstaltung-c-louise-duever-shau-chung-shin-1920x1080.jpg/jcr:contentassets.uni-frankfurt.de/.imaging/de... https://assets.uni-frankfurt.de/.imaging/default/dam/puk-news/beitragsbild-exzellenzcluster-scale-auftaktveranstaltung-c-louise-duever-shau-chung-shin-1920x1080.jpg/jcr:content — 200 — 315 B — 116 ms — h2https://assets.uni-frankfurt.de/.imaging/default/dam/puk-news/beitragsbild-thymus-1920x1080.jpg/jcr:contentassets.uni-frankfurt.de/.imaging/de... https://assets.uni-frankfurt.de/.imaging/default/dam/puk-news/beitragsbild-thymus-1920x1080.jpg/jcr:content — 200 — 314 B — 100 ms — h2https://assets.uni-frankfurt.de/.imaging/focalpoint/square/3000/dam/jcr:f151ba13-64b3-4d21-81fe-b9ef78bb1dbf/praesident-schleiff-enrico-2025-3000x2000.jpgassets.uni-frankfurt.de/.imaging/fo... https://assets.uni-frankfurt.de/.imaging/focalpoint/square/3000/dam/jcr:f151ba13-64b3-4d21-81fe-b9ef78bb1dbf/praesident-schleiff-enrico-2025-3000x2000.jpg — 200 — 195 B — 114 ms — h2https://assets.uni-frankfurt.de/.imaging/default/dam/decorative-pictures/westend-body-of-knowledge-2010-uwe-dettmar-133.jpg/jcr:contentassets.uni-frankfurt.de/.imaging/de... https://assets.uni-frankfurt.de/.imaging/default/dam/decorative-pictures/westend-body-of-knowledge-2010-uwe-dettmar-133.jpg/jcr:content — 200 — 315 B — 115 ms — h2https://assets.uni-frankfurt.de/.imaging/focalpoint/cinema/1600/dam/jcr:5cd35603-c954-444a-8f5a-4faa29e37171/lageplan-standorte-uebersicht-1862x1402.pngassets.uni-frankfurt.de/.imaging/fo... https://assets.uni-frankfurt.de/.imaging/focalpoint/cinema/1600/dam/jcr:5cd35603-c954-444a-8f5a-4faa29e37171/lageplan-standorte-uebersicht-1862x1402.png — 200 — 249 B — 89 ms — h2https://www.uni-frankfurt.de/en/leichte-sprache?_rsc=eqsiqwww.uni-frankfurt.de/en/leichte-spr... https://www.uni-frankfurt.de/en/leichte-sprache?_rsc=eqsiq — 200 — 772 B — 80 ms — h2https://www.uni-frankfurt.de/en?_rsc=1a28hwww.uni-frankfurt.de/en?_rsc=1a28h https://www.uni-frankfurt.de/en?_rsc=1a28h — 200 — 1.8 KiB — 75 ms — h2https://www.uni-frankfurt.de/favicon-32x32.pngwww.uni-frankfurt.de/favicon-32x32.... https://www.uni-frankfurt.de/favicon-32x32.png — 200 — 1.5 KiB — 78 ms — h2https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Ffocalpoint%2Fcinema%2F1600%2Fdam%2Fjcr%3A5cd35603-c954-444a-8f5a-4faa29e37171%2Flageplan-standorte-uebersicht-1862x1402.png&w=1920&q=75www.uni-frankfurt.de/_next/image?ur... https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Ffocalpoint%2Fcinema%2F1600%2Fdam%2Fjcr%3A5cd35603-c954-444a-8f5a-4faa29e37171%2Flageplan-standorte-uebersicht-1862x1402.png&w=1920&q=75 — 200 — 45.7 KiB — 31 ms — h2https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fpuk-news%2Fbeitragsbild-thymus-1920x1080.jpg%2Fjcr%3Acontent&w=1920&q=75www.uni-frankfurt.de/_next/image?ur... https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fpuk-news%2Fbeitragsbild-thymus-1920x1080.jpg%2Fjcr%3Acontent&w=1920&q=75 — 200 — 40.6 KiB — 32 ms — h2https://www.uni-frankfurt.de/en/leichte-sprache?_rsc=1a28hwww.uni-frankfurt.de/en/leichte-spr... https://www.uni-frankfurt.de/en/leichte-sprache?_rsc=1a28h — 200 — 581 B — 82 ms — h2https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fpuk-news%2Fbeitragsbild-buergerveranstaltung-cobic-hirnforschungszentrum-c-shutterstock-ai-generator-1920x1080.jpg%2Fjcr%3Acontent&w=1920&q=75www.uni-frankfurt.de/_next/image?ur... https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fpuk-news%2Fbeitragsbild-buergerveranstaltung-cobic-hirnforschungszentrum-c-shutterstock-ai-generator-1920x1080.jpg%2Fjcr%3Acontent&w=1920&q=75 — 200 — 173.5 KiB — 42 ms — h2https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fpuk-news%2Fbeitragsbild-exzellenzcluster-scale-auftaktveranstaltung-c-louise-duever-shau-chung-shin-1920x1080.jpg%2Fjcr%3Acontent&w=1920&q=75www.uni-frankfurt.de/_next/image?ur... https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fpuk-news%2Fbeitragsbild-exzellenzcluster-scale-auftaktveranstaltung-c-louise-duever-shau-chung-shin-1920x1080.jpg%2Fjcr%3Acontent&w=1920&q=75 — 200 — 218.5 KiB — 46 ms — h2https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Ffocalpoint%2Fsquare%2F3000%2Fdam%2Fjcr%3Af151ba13-64b3-4d21-81fe-b9ef78bb1dbf%2Fpraesident-schleiff-enrico-2025-3000x2000.jpg&w=1920&q=75www.uni-frankfurt.de/_next/image?ur... https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Ffocalpoint%2Fsquare%2F3000%2Fdam%2Fjcr%3Af151ba13-64b3-4d21-81fe-b9ef78bb1dbf%2Fpraesident-schleiff-enrico-2025-3000x2000.jpg&w=1920&q=75 — 200 — 140.8 KiB — 40 ms — h2https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fdecorative-pictures%2Fwestend-body-of-knowledge-2010-uwe-dettmar-133.jpg%2Fjcr%3Acontent&w=1920&q=75www.uni-frankfurt.de/_next/image?ur... https://www.uni-frankfurt.de/_next/image?url=https%3A%2F%2Fassets.uni-frankfurt.de%2F.imaging%2Fdefault%2Fdam%2Fdecorative-pictures%2Fwestend-body-of-knowledge-2010-uwe-dettmar-133.jpg%2Fjcr%3Acontent&w=1920&q=75 — 200 — 117.3 KiB — 33 ms — h2https://www.uni-frankfurt.de/enwww.uni-frankfurt.de/en https://www.uni-frankfurt.de/en — 200 — 645 B — 121 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 379ms · 72KB · €4/mo
www.uni-frankfurt.de
Other
Costly
Execution 204ms
Transfer 71 KB
Unused 33%
Monthly Cost €2/mo
www.uni-frankfurt.de
Other
Optional
Execution 118ms
Transfer 1 KB
Monthly Cost €1/mo
Unattributable
Other
Optional
Execution 57ms
Transfer 0 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.uni-frankfurt.de adds 204ms 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-frankfurt.de takes 204ms 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.

Send Feedback