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https://unibe.ch

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
68
GRADE
D
FIX
5
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
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.
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.

5.76 s

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

41.79 s

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

570 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.

10.15 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.

43.48 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
7 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
11.6 MB transferred, 78 requests
FIX
11.6 MB transferred, 78 requests
Critical::
Page weighs 13.1 MB (11.6 MB transferred)
Warning::
Images are 8.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 8.0 MB
Warning::
JavaScript is 2.9 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.9 MB
Info::
CSS is 396 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 396 KB
Info::
78 HTTP requests
Info::
Estimated 2.4 g CO2 per page load
11.6 MB / 2.4 MB budget
11.6 MB transferred
78 requests
2.4 g CO2 per page load
Images 8.0 MiB 69%
JavaScript 2.9 MiB 25%
CSS 395.8 KiB 3%
Other 179.2 KiB 2%
Fonts 129.5 KiB 1%
HTML 72.3 KiB 1%
Other 1.9 KiB 0%
0 2.4 MB 4.9 MB
Over 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

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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

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 (11.6 MiB of 11.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
17 scripts, 1.6 MB unused
FIX
17 scripts, 1.6 MB unused
Warning::
https://www.unibe.ch/content/metaobj_manager/ZMSSu...: 963 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.unibe.ch/assets/js/main.min.js: 207 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.unibe.ch/content/metaobj_manager/ZMSSu...: 164 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.unibe.ch/content/metaobj_manager/ZMSDa...: 128 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.unibe.ch/assets/js/legacy/vendor/jquer...: 75 KB unused (87%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.unibe.ch/assets/js/legacy/vendor/jquer...: unminified — 28 KB could be saved
Info::
Total unused JavaScript: 1.6 MB
1604 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.js1400 KB963 KB (69%)✓3rd
https://www.unibe.ch/assets/js/main.min.js269 KB207 KB (77%)✓3rd
https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-js-ui.min.js290 KB164 KB (57%)✓3rd
https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.js170 KB128 KB (75%)✓3rd
https://www.unibe.ch/assets/js/legacy/vendor/jquery_unibe.ui.js85 KB75 KB (87%)✗3rd
https://www.unibe.ch/assets/js/legacy/scripts.min.js79 KB47 KB (60%)✗3rd
https://www.unibe.ch/assets/js/head.js31 KB21 KB (69%)✓3rd
https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.papaparse.min.js19 KB—✓3rd
https://code.etracker.com/code/e.js31 KB—✓3rd
https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core-themes.min.js170 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

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

F
Page Weight Inventory
Action
78 resources · 11.6 MB · 1.6 MB savings available
FIX
78 resources · 11.6 MB · 1.6 MB savings available
Warning::
Page weight 10.6 MB over 1MB target
Got: 11.6 MB Expected: ≤ 1 MB
Info::
~1.6 MB of savings available
Warning::
77 third-party resources (100% of weight)
Info::
9 resources over 200KB
78 resources · 11.6 MiB · 77 third-party 10.6 MiB over 1MB target
Image 69% · 8.0 MiB
JavaScript 25% · 2.9 MiB
CSS 3% · 395.8 KiB
Document 2% · 251.6 KiB
Font 1% · 129.5 KiB

~1.6 MiB of savings available

Remove unused JavaScript: 1.6 MiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

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

C
Image Optimization
Action
48 images, 0 KB saveable
REVIEW
48 images, 0 KB saveable
Warning::
https://www.unibe.ch/assets/media/image/logo-uni-b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unibe.ch/assets/media/image/logo_unibe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unibe.ch/assets/media/image/unibe-clai... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unibe.ch/assets/media/image/logo-swiss... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unibe.ch/assets/media/image/logo-sakkr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
48 images 8.0 MB
0 oversized -0 KB
48 legacy format
5 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

C
JS Execution Cost
Action
1829ms total JS execution
REVIEW
1829ms total JS execution
Warning::
https://www.unibe.ch/assets/js/legacy/scripts.min....: 499ms CPU time
Warning::
Unattributable: 360ms CPU time
Info::
https://www.unibe.ch/assets/js/main.min.js: 229ms CPU time
Info::
https://www.unibe.ch/content/metaobj_manager/ZMSSu...: 227ms CPU time
Info::
https://code.etracker.com/code/e.js: 224ms CPU time
Warning::
Third-party scripts: 1829ms (100% of total)

Main Thread Breakdown

Script Evaluation 46% Other 20% Script Parsing & Compilation 16% Style & Layout 13% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.unibe.ch/assets/js/legacy/scripts.min.js499ms298ms32ms3rd
Unattributable360ms6ms0ms3rd
https://www.unibe.ch/assets/js/main.min.js229ms168ms59ms3rd
https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.js227ms127ms100ms3rd
https://code.etracker.com/code/e.js224ms214ms7ms3rd
https://www.unibe.ch/137ms5ms3ms3rd
https://www.unibe.ch/assets/js/legacy/vendor/jquery_unibe.ui.js100ms20ms28ms3rd
https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-i18n.min.js51ms18ms33ms3rd
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
4 fonts (129 KB)
PASS
4 fonts (129 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

129 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s FCP 5.8 s LCP 41.8 shttps://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Regular.woff2FrutigerNeueLTW06-Regul... https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Regular.woff2 — 42.8 KiB — 52 ms — font-display: swaphttps://www.unibe.ch/assets/fonts/unibe-iconset-v03.woff?3q5tzhunibe-iconset-v03.woff https://www.unibe.ch/assets/fonts/unibe-iconset-v03.woff?3q5tzh — 1.9 KiB — 50 ms — font-display: swaphttps://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Light.woff2FrutigerNeueLTW06-Light... https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Light.woff2 — 42.2 KiB — 52 ms — font-display: swaphttps://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Bold.woff2FrutigerNeueLTW06-Bold.... https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Bold.woff2 — 42.6 KiB — 52 ms — font-display: swap
FrutigerNeueLTW06-Regul... woff2 swap
Size 43 KB
Load time 52 ms
Start 549 ms
Risk FOUT — text flashes from fallback to web font
unibe-iconset-v03.woff woff swap
Size 2 KB
Load time 50 ms
Start 549 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
FrutigerNeueLTW06-Light... woff2 swap
Size 42 KB
Load time 52 ms
Start 552 ms
Risk FOUT — text flashes from fallback to web font
FrutigerNeueLTW06-Bold.... woff2 swap
Size 43 KB
Load time 52 ms
Start 552 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)

Fixing the unchecked items could save ~1 KB and ~2 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
78 requests over 1260ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s FCP 5.8 s LCP 41.8 shttps://unibe.ch// https://unibe.ch/ — 301 — 133 B — 122 ms — h2https://www.unibe.ch/www.unibe.ch/ https://www.unibe.ch/ — 200 — 72.3 KiB — 125 ms — h2https://www.unibe.ch/assets/css/main.min.csswww.unibe.ch/assets/css/main.min.cs... https://www.unibe.ch/assets/css/main.min.css — 200 — 52.4 KiB — 83 ms — h2https://www.unibe.ch/unibe_theme_portal_2022/css/web.csswww.unibe.ch/unibe_theme_portal_202... https://www.unibe.ch/unibe_theme_portal_2022/css/web.css — 200 — 20.4 KiB — 44 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.csswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.css — 200 — 22.5 KiB — 65 ms — h2https://www.unibe.ch/assets/js/head.jswww.unibe.ch/assets/js/head.js https://www.unibe.ch/assets/js/head.js — 200 — 31.1 KiB — 101 ms — h2https://www.unibe.ch/assets/media/image/logo_unibern@2x.pngwww.unibe.ch/assets/media/image/log... https://www.unibe.ch/assets/media/image/logo_unibern@2x.png — 200 — 4.9 KiB — 100 ms — h2https://www.unibe.ch/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schoffling_Vers3_ger.jpgwww.unibe.ch/unibe/portal/content/e... https://www.unibe.ch/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schoffling_Vers3_ger.jpg — 200 — 361.3 KiB — 139 ms — h2https://fonts.googleapis.com/css2?family=Merriweather:wght@700&display=swapfonts.googleapis.com/css2?family=Me... https://fonts.googleapis.com/css2?family=Merriweather:wght@700&display=swap — 200 — 1.1 KiB — 94 ms — h2https://www.unibe.ch/unibe/portal/content/e1255815/teaser_item1803604/Mit_Sprache_zum_Staat_ger.jpgwww.unibe.ch/unibe/portal/content/e... https://www.unibe.ch/unibe/portal/content/e1255815/teaser_item1803604/Mit_Sprache_zum_Staat_ger.jpg — 200 — 48.1 KiB — 41 ms — h2https://www.unibe.ch/unibe/portal/content/e1255815/teaser_item1802901/20260416_MM_CSEM_ger.jpgwww.unibe.ch/unibe/portal/content/e... https://www.unibe.ch/unibe/portal/content/e1255815/teaser_item1802901/20260416_MM_CSEM_ger.jpg — 200 — 97.5 KiB — 41 ms — h2https://www.unibe.ch/unibe/portal/content/e1256411/teaser_item1803607/20260421_Portal_Oliver_Schib_ger.jpgwww.unibe.ch/unibe/portal/content/e... https://www.unibe.ch/unibe/portal/content/e1256411/teaser_item1803607/20260421_Portal_Oliver_Schib_ger.jpg — 200 — 56.8 KiB — 40 ms — h2https://www.unibe.ch/assets/js/legacy/scripts.min.jswww.unibe.ch/assets/js/legacy/scrip... https://www.unibe.ch/assets/js/legacy/scripts.min.js — 200 — 79.3 KiB — 83 ms — h2https://www.unibe.ch/assets/js/main.min.jswww.unibe.ch/assets/js/main.min.js https://www.unibe.ch/assets/js/main.min.js — 200 — 268.7 KiB — 85 ms — h2https://www.unibe.ch/assets/js/legacy/vendor/jquery_unibe.ui.jswww.unibe.ch/assets/js/legacy/vendo... https://www.unibe.ch/assets/js/legacy/vendor/jquery_unibe.ui.js — 200 — 85.4 KiB — 60 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.papaparse.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.papaparse.min.js — 200 — 19.2 KiB — 45 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.js — 200 — 170.2 KiB — 50 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.alphabetsearch.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.alphabetsearch.min.js — 200 — 6.6 KiB — 50 ms — h2https://code.etracker.com/code/e.jscode.etracker.com/code/e.js https://code.etracker.com/code/e.js — 200 — 31.5 KiB — 225 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.csswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.css — 200 — 299.4 KiB — 46 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.js — 200 — 1.4 MiB — 112 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core-themes.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core-themes.min.js — 200 — 170.0 KiB — 107 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-i18n.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-i18n.min.js — 200 — 338.9 KiB — 106 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-js-ui.min.jswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-js-ui.min.js — 200 — 290.4 KiB — 85 ms — h2https://www.unibe.ch/++resource++zms_/zmi.core.jswww.unibe.ch/++resource++zms_/zmi.c... https://www.unibe.ch/++resource++zms_/zmi.core.js — 200 — 14.2 KiB — 79 ms — h2https://www.unibe.ch/assets/media/icons/icon_youtube.svgwww.unibe.ch/assets/media/icons/ico... https://www.unibe.ch/assets/media/icons/icon_youtube.svg — 200 — 919 B — 73 ms — h2https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Regular.woff2www.unibe.ch/assets/fonts/FrutigerN... https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Regular.woff2 — 200 — 42.8 KiB — 52 ms — h2https://www.unibe.ch/assets/fonts/unibe-iconset-v03.woff?3q5tzhwww.unibe.ch/assets/fonts/unibe-ico... https://www.unibe.ch/assets/fonts/unibe-iconset-v03.woff?3q5tzh — 200 — 1.9 KiB — 50 ms — h2https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Light.woff2www.unibe.ch/assets/fonts/FrutigerN... https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Light.woff2 — 200 — 42.2 KiB — 52 ms — h2https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Bold.woff2www.unibe.ch/assets/fonts/FrutigerN... https://www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Bold.woff2 — 200 — 42.6 KiB — 52 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s FCP 5.8 s LCP 41.8 shttps://unibe.ch// https://unibe.ch/ — 301 — 133 B — 122 ms — h2https://www.unibe.ch/www.unibe.ch/ https://www.unibe.ch/ — 200 — 72.3 KiB — 125 ms — h2https://www.unibe.ch/assets/css/main.min.csswww.unibe.ch/assets/css/main.min.cs... https://www.unibe.ch/assets/css/main.min.css — 200 — 52.4 KiB — 83 ms — h2https://www.unibe.ch/unibe_theme_portal_2022/css/web.csswww.unibe.ch/unibe_theme_portal_202... https://www.unibe.ch/unibe_theme_portal_2022/css/web.css — 200 — 20.4 KiB — 44 ms — h2https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.csswww.unibe.ch/content/metaobj_manage... https://www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.css — 200 — 22.5 KiB — 65 ms — h2https://www.unibe.ch/assets/js/head.jswww.unibe.ch/assets/js/head.js https://www.unibe.ch/assets/js/head.js — 200 — 31.1 KiB — 101 ms — h2https://www.unibe.ch/assets/media/image/logo_unibern@2x.pngwww.unibe.ch/assets/media/image/log... https://www.unibe.ch/assets/media/image/logo_unibern@2x.png — 200 — 4.9 KiB — 100 ms — h2https://www.unibe.ch/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schoffling_Vers3_ger.jpgwww.unibe.ch/unibe/portal/content/e... https://www.unibe.ch/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schoffling_Vers3_ger.jpg — 200 — 361.3 KiB — 139 ms — h2https://fonts.googleapis.com/css2?family=Merriweather:wght@700&display=swapfonts.googleapis.com/css2?family=Me... https://fonts.googleapis.com/css2?family=Merriweather:wght@700&display=swap — 200 — 1.1 KiB — 94 ms — h2https://www.unibe.ch/unibe/portal/content/e1255815/teaser_item1803604/Mit_Sprache_zum_Staat_ger.jpgwww.unibe.ch/unibe/portal/content/e... https://www.unibe.ch/unibe/portal/content/e1255815/teaser_item1803604/Mit_Sprache_zum_Staat_ger.jpg — 200 — 48.1 KiB — 41 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
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Per-script blocking time, transfer cost, and cache headers
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100% of JavaScript execution is third-party
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Execution 100ms
Transfer 85 KB
Unused 87%
Monthly Cost CHF2/mo
www.unibe.ch
Other
Optional
Execution 51ms
Transfer 339 KB
Monthly Cost CHF1/mo

These scripts may cost more than they're worth

  • www.unibe.ch adds 499ms and costs ~CHF8/month
  • Unattributable adds 360ms and costs ~CHF6/month
  • www.unibe.ch adds 229ms and costs ~CHF4/month
  • www.unibe.ch adds 227ms and costs ~CHF4/month
  • code.etracker.com adds 224ms and costs ~CHF4/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.unibe.ch takes 499ms 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

60% of www.unibe.ch'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

Unattributable takes 360ms 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.unibe.ch takes 229ms 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

77% of www.unibe.ch'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

www.unibe.ch takes 227ms 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

69% of www.unibe.ch'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

code.etracker.com takes 224ms 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

87% of www.unibe.ch'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.

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