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https://ku.dk

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
3
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
64
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.

4.18 s

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

5.75 s

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

238 ms

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

0.025

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

4.18 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.

7.99 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
17
8 PASS 4 REVIEW 3 FIX
F
Page Weight Budget
Action
2.8 MB transferred, 43 requests
FIX
2.8 MB transferred, 43 requests
Warning::
Page weighs 4.4 MB (2.8 MB transferred)
Info::
Fonts are 389 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 389 KB
Info::
43 HTTP requests
Info::
Estimated 0.59 g CO2 per page load
2.8 MB / 2.4 MB budget
2.8 MB transferred
43 requests
0.59 g CO2 per page load
Other 1.8 MiB 62%
JavaScript 390.7 KiB 13%
Fonts 389.5 KiB 13%
Images 192.4 KiB 7%
CSS 75.1 KiB 3%
HTML 38.8 KiB 1%
Other 10.6 KiB 0%
Other 2.9 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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 (2.8 MiB of 2.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
43 resources · 2.8 MB · 198 KB savings available
FIX
43 resources · 2.8 MB · 198 KB savings available
Warning::
Page weight 1.8 MB over 1MB target
Got: 2.8 MB Expected: ≤ 1 MB
Info::
~198 KB of savings available
Warning::
42 third-party resources (100% of weight)
Info::
1 resources over 200KB
43 resources · 2.8 MiB · 42 third-party 1.8 MiB over 1MB target
Media 62% · 1.8 MiB
JavaScript 13% · 390.7 KiB
Font 13% · 389.5 KiB
Image 7% · 195.2 KiB
CSS 3% · 75.1 KiB
Document 1% · 38.8 KiB
Other 0% · 10.7 KiB

~198.2 KiB of savings available

Remove unused JavaScript: 198.2 KiB
C
JS Execution Cost
Action
1313ms total JS execution
REVIEW
1313ms total JS execution
Warning::
https://www.ku.dk/: 301ms CPU time
Warning::
Unattributable: 279ms CPU time
Info::
https://www.ku.dk/_assets/12a46eea25fd08a7277319b8...: 212ms CPU time
Info::
https://kumain.containers.piwik.pro/1a53bcb6-2453-...: 207ms CPU time
Info::
https://policy.app.cookieinformation.com/uc.js: 144ms CPU time
Warning::
Third-party scripts: 1313ms (100% of total)

Main Thread Breakdown

Script Evaluation 37% Other 25% Style & Layout 14% Script Parsing & Compilation 14% Parse HTML & CSS 6% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.ku.dk/301ms18ms3ms3rd
Unattributable279ms10ms0ms3rd
https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Cludo/dist/js/cludo-search-results.js?1776760771212ms163ms49ms3rd
https://kumain.containers.piwik.pro/1a53bcb6-2453-41d0-bcc9-2097b7ac645c.js?use_secure_cookies207ms147ms49ms3rd
https://policy.app.cookieinformation.com/uc.js144ms74ms14ms3rd
https://policy.app.cookieinformation.com/latest/ku.dk/da.js95ms56ms23ms3rd
https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/swiper_config.min.js?177676081974ms38ms8ms3rd
C
JS Bundles
Action
9 scripts, 198 KB unused
REVIEW
9 scripts, 198 KB unused
Warning::
https://www.ku.dk/_assets/12a46eea25fd08a7277319b8...: 115 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.ku.dk/typo3temp/assets/compressed/merg...: 30 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://kumain.containers.piwik.pro/1a53bcb6-2453-...: 29 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://customer.cludo.com/scripts/bundles/search-...: 25 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 198 KB
198 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Cludo/dist/js/cludo-search-results.js?1776760771166 KB115 KB (70%)✓3rd
https://www.ku.dk/typo3temp/assets/compressed/merged-fe1e9397cce79882da135a75bc76a39c-14913c202c77ba06226a90d5762c1617.js?177676456036 KB30 KB (83%)✓3rd
https://kumain.containers.piwik.pro/1a53bcb6-2453-41d0-bcc9-2097b7ac645c.js?use_secure_cookies82 KB29 KB (35%)✓3rd
https://customer.cludo.com/scripts/bundles/search-script.min.js51 KB25 KB (50%)✓3rd
https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/ucph_video.min.js?17767608131 KB—✓3rd
https://www.ku.dk/_assets/2c537ef5f06a09b4ac2855e9d0553379/JavaScript/Dist/findresearcher.min.js?17767608490 KB—✓3rd
https://policy.app.cookieinformation.com/uc.js12 KB—✓3rd
https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/swiper_config.min.js?177676081927 KB—✓3rd
https://policy.app.cookieinformation.com/latest/ku.dk/da.js15 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

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

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-cache—Cache 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
Image Optimization
12 images, 0 KB saveable
PASS
12 images, 0 KB saveable
Warning::
https://www.ku.dk/assets/Cookieinformation/KU-digi... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
12 images 192 KB
0 oversized -0 KB
1 legacy format
1 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

A+
Font Loading
3 fonts (389 KB)
PASS
3 fonts (389 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

389 KB total

Render-blocking

0

of 3

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 FCP 4.2 s LCP 5.8 shttps://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Fonts/inter/inter-regular.woff2inter-regular.woff2 https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Fonts/inter/inter-regular.woff2 — 108.9 KiB — 18 ms — font-display: swaphttps://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Fonts/garamond/EBGaramond-Medium.woff2EBGaramond-Medium.woff2 https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Fonts/garamond/EBGaramond-Medium.woff2 — 168.2 KiB — 21 ms — font-display: swaphttps://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Fonts/inter/inter-semibold.woff2inter-semibold.woff2 https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Fonts/inter/inter-semibold.woff2 — 112.4 KiB — 24 ms — font-display: swap
inter-regular.woff2 woff2 swap
Size 109 KB
Load time 18 ms
Start 245 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
EBGaramond-Medium.woff2 woff2 swap
Size 168 KB
Load time 21 ms
Start 246 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
inter-semibold.woff2 woff2 swap
Size 112 KB
Load time 24 ms
Start 246 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~195 KB and ~390 ms

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
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
43 requests over 645ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.2 s LCP 5.8 shttps://ku.dk// https://ku.dk/ — 301 — 126 B — 137 ms — http/1.1https://www.ku.dk/www.ku.dk/ https://www.ku.dk/ — 200 — 35.9 KiB — 13 ms — h2https://www.ku.dk/typo3temp/assets/compressed/merged-d33a4a6d078403ee2bbe608710b56668-3c20b843b791018768d62f41f923203a.css?1776764575www.ku.dk/typo3temp/assets/compress... https://www.ku.dk/typo3temp/assets/compressed/merged-d33a4a6d078403ee2bbe608710b56668-3c20b843b791018768d62f41f923203a.css?1776764575 — 200 — 59.7 KiB — 18 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/topFrontpage.min.css?1776760809www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/topFrontpage.min.css?1776760809 — 200 — 1021 B — 17 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/herovideoimage.min.css?1776760809www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/herovideoimage.min.css?1776760809 — 200 — 2.2 KiB — 7 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/card.min.css?1776760809www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/card.min.css?1776760809 — 200 — 1.4 KiB — 9 ms — h2https://www.ku.dk/_assets/ddf336a27f5db9aaa78c49b6e08f05f5/Css/Dist/themebanner.min.css?1776760914www.ku.dk/_assets/ddf336a27f5db9aaa... https://www.ku.dk/_assets/ddf336a27f5db9aaa78c49b6e08f05f5/Css/Dist/themebanner.min.css?1776760914 — 200 — 1.4 KiB — 13 ms — h2https://www.ku.dk/_assets/49da496e8e3a5ca7d9b29b27185de4f2/Css/Dist/ucph_content_numbers.min.css?1776760876www.ku.dk/_assets/49da496e8e3a5ca7d... https://www.ku.dk/_assets/49da496e8e3a5ca7d9b29b27185de4f2/Css/Dist/ucph_content_numbers.min.css?1776760876 — 200 — 530 B — 13 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/swiper.min.css?1776760815www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/swiper.min.css?1776760815 — 200 — 3.7 KiB — 14 ms — h2https://www.ku.dk/_assets/2c537ef5f06a09b4ac2855e9d0553379/Css/Dist/ucph_content_find_researcher.min.css?1776760848www.ku.dk/_assets/2c537ef5f06a09b4a... https://www.ku.dk/_assets/2c537ef5f06a09b4ac2855e9d0553379/Css/Dist/ucph_content_find_researcher.min.css?1776760848 — 200 — 4.5 KiB — 9 ms — h2https://www.ku.dk/fileadmin/_processed_/5/2/csm_1920x950-thumbnail_eb154707c8.webpwww.ku.dk/fileadmin/_processed_/5/2... https://www.ku.dk/fileadmin/_processed_/5/2/csm_1920x950-thumbnail_eb154707c8.webp — 200 — 40.1 KiB — 13 ms — h2https://www.ku.dk/typo3temp/assets/compressed/merged-fe1e9397cce79882da135a75bc76a39c-14913c202c77ba06226a90d5762c1617.js?1776764560www.ku.dk/typo3temp/assets/compress... https://www.ku.dk/typo3temp/assets/compressed/merged-fe1e9397cce79882da135a75bc76a39c-14913c202c77ba06226a90d5762c1617.js?1776764560 — 200 — 35.9 KiB — 16 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/ucph_video.min.js?1776760813www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/ucph_video.min.js?1776760813 — 200 — 1.0 KiB — 3 ms — h2https://www.ku.dk/_assets/2c537ef5f06a09b4ac2855e9d0553379/JavaScript/Dist/findresearcher.min.js?1776760849www.ku.dk/_assets/2c537ef5f06a09b4a... https://www.ku.dk/_assets/2c537ef5f06a09b4ac2855e9d0553379/JavaScript/Dist/findresearcher.min.js?1776760849 — 200 — 497 B — 6 ms — h2https://policy.app.cookieinformation.com/uc.jspolicy.app.cookieinformation.com/uc... https://policy.app.cookieinformation.com/uc.js — 200 — 12.2 KiB — 139 ms — h2https://customer.cludo.com/scripts/bundles/search-script.min.jscustomer.cludo.com/scripts/bundles/... https://customer.cludo.com/scripts/bundles/search-script.min.js — 200 — 51.1 KiB — 39 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Cludo/dist/js/cludo-search-results.js?1776760771www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Cludo/dist/js/cludo-search-results.js?1776760771 — 200 — 166.0 KiB — 11 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/swiper_config.min.js?1776760819www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/JavaScript/Dist/swiper_config.min.js?1776760819 — 200 — 26.7 KiB — 8 ms — h2https://www.ku.dk/typo3temp/assets/compressed/merged-57128702993aa10b213ec188ab9738ec-368cdb3564b3ab81666d86001d8f4229.css?1776764560www.ku.dk/typo3temp/assets/compress... https://www.ku.dk/typo3temp/assets/compressed/merged-57128702993aa10b213ec188ab9738ec-368cdb3564b3ab81666d86001d8f4229.css?1776764560 — 200 — 715 B — 4 ms — h2https://kumain.containers.piwik.pro/1a53bcb6-2453-41d0-bcc9-2097b7ac645c.js?use_secure_cookieskumain.containers.piwik.pro/1a53bcb... https://kumain.containers.piwik.pro/1a53bcb6-2453-41d0-bcc9-2097b7ac645c.js?use_secure_cookies — 200 — 82.3 KiB — 178 ms — h2data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='…www.w3.org/2000/svg' viewBox='0 0 3... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 16 16' aria-h…www.w3.org/2000/svg' fill='none' vi... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 16 16' aria-h… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24'%3E%3Cp…www.w3.org/2000/svg' fill='none' vi... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24'%3E%3Cp… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg aria-hidden='true' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'…www.w3.org/2000/svg' viewBox='0 0 3... data:image/svg+xml,%3Csvg aria-hidden='true' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke… — 200 — 0 B — 0 ms — datahttps://www.ku.dk/fileadmin/_processed_/6/d/csm_220825_KU-IMM_004347.JPG_2f468aef86.webpwww.ku.dk/fileadmin/_processed_/6/d... https://www.ku.dk/fileadmin/_processed_/6/d/csm_220825_KU-IMM_004347.JPG_2f468aef86.webp — 200 — 64.6 KiB — 21 ms — h2https://www.ku.dk/fileadmin/_processed_/0/a/csm_220825_KU-IMM_004313.JPG_f87f4ea875.webpwww.ku.dk/fileadmin/_processed_/0/a... https://www.ku.dk/fileadmin/_processed_/0/a/csm_220825_KU-IMM_004313.JPG_f87f4ea875.webp — 200 — 27.0 KiB — 22 ms — h2https://www.ku.dk/fileadmin/_processed_/7/f/csm_KISO_1100x600__2__d27417a51d.webpwww.ku.dk/fileadmin/_processed_/7/f... https://www.ku.dk/fileadmin/_processed_/7/f/csm_KISO_1100x600__2__d27417a51d.webp — 200 — 19.8 KiB — 22 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.2 s LCP 5.8 shttps://ku.dk// https://ku.dk/ — 301 — 126 B — 137 ms — http/1.1https://www.ku.dk/www.ku.dk/ https://www.ku.dk/ — 200 — 35.9 KiB — 13 ms — h2https://www.ku.dk/typo3temp/assets/compressed/merged-d33a4a6d078403ee2bbe608710b56668-3c20b843b791018768d62f41f923203a.css?1776764575www.ku.dk/typo3temp/assets/compress... https://www.ku.dk/typo3temp/assets/compressed/merged-d33a4a6d078403ee2bbe608710b56668-3c20b843b791018768d62f41f923203a.css?1776764575 — 200 — 59.7 KiB — 18 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/topFrontpage.min.css?1776760809www.ku.dk/_assets/12a46eea25fd08a72... https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/topFrontpage.min.css?1776760809 — 200 — 1021 B — 17 ms — h2https://www.ku.dk/_assets/12a46eea25fd08a7277319b85c785b6b/Css/Dist/herovideoimage.min.css?1776760809www.ku.dk/_assets/12a46eea25fd08a72... 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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 1313ms · 338KB · kr104/mo
www.ku.dk
Other
Costly
Execution 301ms
Transfer 36 KB
Monthly Cost kr24/mo
Unattributable
Other
Costly
Execution 279ms
Transfer 0 KB
Monthly Cost kr22/mo
www.ku.dk
Other
Costly
Execution 212ms
Transfer 166 KB
Unused 70%
Monthly Cost kr17/mo
kumain.containers.piwik.pro
Other
Costly
Execution 207ms
Transfer 82 KB
Unused 35%
Monthly Cost kr16/mo
policy.app.cookieinformation.com
Other
Optional
Execution 144ms
Transfer 12 KB
Monthly Cost kr11/mo
policy.app.cookieinformation.com
Other
Optional
Execution 95ms
Transfer 15 KB
Monthly Cost kr7/mo
www.ku.dk
Other
Optional
Execution 74ms
Transfer 27 KB
Monthly Cost kr6/mo

These scripts may cost more than they're worth

  • www.ku.dk adds 301ms and costs ~kr24/month
  • Unattributable adds 279ms and costs ~kr22/month
  • www.ku.dk adds 212ms and costs ~kr17/month
  • kumain.containers.piwik.pro adds 207ms and costs ~kr16/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.ku.dk takes 301ms 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 279ms 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.ku.dk takes 212ms 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

70% of www.ku.dk'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

kumain.containers.piwik.pro takes 207ms 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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