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https://stern.de

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
40
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
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.

6.18 s

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

14.93 s

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

800 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.

6.77 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.

15.17 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 2 REVIEW 6 FIX
F
Page Weight Budget
Action
3.2 MB transferred, 88 requests
FIX
3.2 MB transferred, 88 requests
Warning::
Page weighs 7.6 MB (3.2 MB transferred)
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
88 HTTP requests
Info::
Estimated 0.67 g CO2 per page load
3.2 MB / 2.4 MB budget
3.2 MB transferred
88 requests
0.67 g CO2 per page load
Images 1.7 MiB 54%
JavaScript 1.2 MiB 37%
Fonts 160.5 KiB 5%
HTML 63.4 KiB 2%
CSS 40.9 KiB 1%
Other 11.6 KiB 0%
Other 6.5 KiB 0%
Other 6.2 KiB 0%
Other 1.1 KiB 0%
Other 209 B 0%
Other 0 B 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

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 (3.2 MiB of 3.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5891ms total JS execution
FIX
5891ms total JS execution
Warning::
Unattributable: 1180ms CPU time
Warning::
https://www.stern.de/pLN1Je6HDQweBEf__Bcn/pVOkrGEm...: 897ms CPU time
Warning::
https://www.stern.de/: 845ms CPU time
Warning::
https://www.stern.de/public/main-LYJV6GGT.js: 598ms CPU time
Warning::
https://baseendpoint.stern.de/Notice.8f529.js: 593ms CPU time
Warning::
Third-party scripts: 5891ms (100% of total)

Main Thread Breakdown

Script Evaluation 47% Style & Layout 20% Other 17% Script Parsing & Compilation 7% Parse HTML & CSS 4% Rendering 3%
ScriptTotalScriptingParse/CompileParty
Unattributable1180ms148ms0ms3rd
https://www.stern.de/pLN1Je6HDQweBEf__Bcn/pVOkrGEm/bB4EekwB/KU/8pbHw_LBIQAg?v=50f8998d-e1ba-944e-da5b-45c9ad36173b897ms833ms47ms3rd
https://www.stern.de/845ms17ms2ms3rd
https://www.stern.de/public/main-LYJV6GGT.js598ms266ms41ms3rd
https://baseendpoint.stern.de/Notice.8f529.js593ms378ms27ms3rd
https://www.stern.de/stern.de/MoltenBundle.bottom.js469ms201ms23ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-K47MJWS9365ms290ms48ms3rd
https://baseendpoint.stern.de/unified/wrapperMessagingWithoutDetection.js249ms144ms17ms3rd
https://www.stern.de/stern.de/MoltenBundle.top.js181ms118ms46ms3rd
https://jpi6gyfn8p.kameleoon.io/engine.js166ms106ms12ms3rd

Showing top 10 of 14 scripts

D
JS Bundles
Action
34 scripts, 476 KB unused
FIX
34 scripts, 476 KB unused
Warning::
https://www.stern.de/public/main-LYJV6GGT.js: 112 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.stern.de/stern.de/MoltenBundle.top.js: 79 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-K47...: 76 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://baseendpoint.stern.de/Notice.8f529.js: 63 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.stern.de/stern.de/MoltenBundle.bottom....: 51 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 476 KB
476 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.stern.de/public/main-LYJV6GGT.js141 KB112 KB (80%)✓3rd
https://www.stern.de/stern.de/MoltenBundle.top.js156 KB79 KB (51%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-K47MJWS9182 KB76 KB (42%)✓3rd
https://baseendpoint.stern.de/Notice.8f529.js91 KB63 KB (69%)✓3rd
https://www.stern.de/stern.de/MoltenBundle.bottom.js78 KB51 KB (67%)✓3rd
https://www.stern.de/reptilatdandelion.js42 KB38 KB (93%)✓3rd
https://www.stern.de/pLN1Je6HDQweBEf__Bcn/pVOkrGEm/bB4EekwB/KU/8pbHw_LBIQAg?v=50f8998d-e1ba-944e-da5b-45c9ad36173b158 KB33 KB (21%)✓3rd
https://cdn-gl.nmrodam.com/novms/js/2/nlsSDK600.eu.bundle.min.js56 KB23 KB (42%)✓3rd
https://files.upscore.com/config/stern.de.js2 KB—✓3rd
https://baseendpoint.stern.de/polyfills.01516.js2 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
88 resources · 3.2 MB · 476 KB savings available
FIX
88 resources · 3.2 MB · 476 KB savings available
Warning::
Page weight 2.2 MB over 1MB target
Got: 3.2 MB Expected: ≤ 1 MB
Info::
~476 KB of savings available
Warning::
87 third-party resources (100% of weight)
Info::
1 resources over 200KB
88 resources · 3.2 MiB · 87 third-party 2.2 MiB over 1MB target
Image 54% · 1.7 MiB
JavaScript 37% · 1.2 MiB
Font 5% · 160.5 KiB
Document 2% · 64.8 KiB
CSS 1% · 40.9 KiB
Other 0% · 15.9 KiB

~476.2 KiB of savings available

Remove unused JavaScript: 476.2 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-cache, no-store, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache, no-store, must-revalidate

DirectiveValueMeaning
no-cache—Cache but always revalidate first
no-store—Never cache this response
must-revalidate—Must recheck with server after expiry
C
Image Optimization
Action
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
https://image.stern.de/37134128/t/6l/v3/w480/r1/-/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37315094/t/LV/v4/w480/r1.5/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37329828/t/zx/v3/w480/r0.75... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37329160/t/wC/v2/w480/r1.5/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/36558924/t/7m/v15/w240/r1/-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37264102/t/GD/v6/w240/r1/-/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37330406/t/BE/v4/w480/r1.5/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37330582/t/SB/v1/w480/r1.5/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://image.stern.de/37328802/t/2s/v8/w480/r1.5/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 1.7 MB
0 oversized -0 KB
14 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

Performance issues directly impact user engagement and conversion rates.

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
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 (161 KB)
PASS
4 fonts (161 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

161 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 FCP 6.2 s LCP 14.9 shttps://www.stern.de/public/SternVariable-4OGB3BYX.woff2SternVariable-4OGB3BYX.... https://www.stern.de/public/SternVariable-4OGB3BYX.woff2 — 72.1 KiB — 85 ms — font-display: swaphttps://www.stern.de/public/iconfont-QCVEAXNW.woff2iconfont-QCVEAXNW.woff2 https://www.stern.de/public/iconfont-QCVEAXNW.woff2 — 8.5 KiB — 55 ms — font-display: swaphttps://www.stern.de/public/SternItalicVariable-TZUDG6NG.woff2SternItalicVariable-TZU... https://www.stern.de/public/SternItalicVariable-TZUDG6NG.woff2 — 79.9 KiB — 37 ms — font-display: swaphttps://www.stern.de/public/SternVariable-4OGB3BYX.woff2SternVariable-4OGB3BYX.... https://www.stern.de/public/SternVariable-4OGB3BYX.woff2 — 0 B — 2 ms — font-display: swap
SternVariable-4OGB3BYX.... woff2 swap
Size 72 KB
Load time 85 ms
Start 196 ms
Risk FOUT — text flashes from fallback to web font
iconfont-QCVEAXNW.woff2 woff2 swap
Size 9 KB
Load time 55 ms
Start 196 ms
Risk FOUT — text flashes from fallback to web font
SternItalicVariable-TZU... woff2 swap
Size 80 KB
Load time 37 ms
Start 466 ms
Risk FOUT — text flashes from fallback to web font
SternVariable-4OGB3BYX.... woff2 swap
Size 0 KB
Load time 2 ms
Start 1.4 s
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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
—

2 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
88 requests over 3226ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 6.2 s LCP 14.9 shttps://stern.de// https://stern.de/ — 301 — 126 B — 94 ms — h2https://www.stern.de/www.stern.de/ https://www.stern.de/ — 200 — 57.3 KiB — 88 ms — h2https://jpi6gyfn8p.kameleoon.io/engine.jsjpi6gyfn8p.kameleoon.io/engine.js https://jpi6gyfn8p.kameleoon.io/engine.js — 200 — 34.2 KiB — 97 ms — h2https://www.stern.de/public/SternVariable-4OGB3BYX.woff2www.stern.de/public/SternVariable-4... https://www.stern.de/public/SternVariable-4OGB3BYX.woff2 — 200 — 72.1 KiB — 85 ms — h2https://www.stern.de/public/iconfont-QCVEAXNW.woff2www.stern.de/public/iconfont-QCVEAX... https://www.stern.de/public/iconfont-QCVEAXNW.woff2 — 200 — 8.5 KiB — 55 ms — h2https://www.stern.de/public/main-NTKJXKVT.csswww.stern.de/public/main-NTKJXKVT.c... https://www.stern.de/public/main-NTKJXKVT.css — 200 — 34.2 KiB — 57 ms — h2https://image.stern.de/37329828/t/zx/v3/w480/r0.75/-/tuerkei-hinterbliebene-istanbul.jpgimage.stern.de/37329828/t/zx/v3/w48... https://image.stern.de/37329828/t/zx/v3/w480/r0.75/-/tuerkei-hinterbliebene-istanbul.jpg — 200 — 51.5 KiB — 79 ms — h2https://image.stern.de/37134128/t/6l/v3/w480/r1/-/jonanthanjasberg-kirgistan.jpgimage.stern.de/37134128/t/6l/v3/w48... https://image.stern.de/37134128/t/6l/v3/w480/r1/-/jonanthanjasberg-kirgistan.jpg — 200 — 66.0 KiB — 117 ms — h2https://www.stern.de/public/main-LYJV6GGT.jswww.stern.de/public/main-LYJV6GGT.j... https://www.stern.de/public/main-LYJV6GGT.js — 200 — 140.9 KiB — 86 ms — h2https://www.stern.de/reptilatdandelion.jswww.stern.de/reptilatdandelion.js https://www.stern.de/reptilatdandelion.js — 200 — 41.6 KiB — 86 ms — h2https://www.stern.de/pLN1Je6HDQweBEf__Bcn/pVOkrGEm/bB4EekwB/KU/8pbHw_LBIQAg?v=50f8998d-e1ba-944e-da5b-45c9ad36173bwww.stern.de/pLN1Je6HDQweBEf__Bcn/p... https://www.stern.de/pLN1Je6HDQweBEf__Bcn/pVOkrGEm/bB4EekwB/KU/8pbHw_LBIQAg?v=50f8998d-e1ba-944e-da5b-45c9ad36173b — 200 — 157.6 KiB — 94 ms — h2https://www.stern.de/public/manifest-O2IH675K.jsonwww.stern.de/public/manifest-O2IH67... https://www.stern.de/public/manifest-O2IH675K.json — 200 — 1.1 KiB — 64 ms — h2data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="46" height="64" viewBox="0 0 46 6…www.w3.org/2000/svg" width="46" hei... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="46" height="64" viewBox="0 0 46 6… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="64" height="46" fill="none"><path…www.w3.org/2000/svg" width="64" hei... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="64" height="46" fill="none"><path… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><circle cx="8" cy…www.w3.org/2000/svg" width="16" hei... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><circle cx="8" cy… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="76" height="36" fill="none"><path…www.w3.org/2000/svg" width="76" hei... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="76" height="36" fill="none"><path… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="139" height="36" fill="none"><pat…www.w3.org/2000/svg" width="139" he... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="139" height="36" fill="none"><pat… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="76" height="36" fill="none"><path…www.w3.org/2000/svg" width="76" hei... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="76" height="36" fill="none"><path… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="118" height="36" fill="none"><pat…www.w3.org/2000/svg" width="118" he... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="118" height="36" fill="none"><pat… — 200 — 0 B — 0 ms — datadata:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="139" height="36" fill="none"><pat…www.w3.org/2000/svg" width="139" he... data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="139" height="36" fill="none"><pat… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAMCAYAAAC5tzfZAAAAx0lEQVQokZ2SsRHCMAxFX0yZipYyj…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAMCAYAAAC5tzfZAAAAx0lEQVQokZ2SsRHCMAxFX0yZipYyj… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTIiIGhlaWdodD0iMzIiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTIiIGhlaWdodD0iMzIiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAMCAYAAAC5tzfZAAAAwUlEQVQokZ2SURHCMBBEX+IAC0VCk…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAMCAYAAAC5tzfZAAAAwUlEQVQokZ2SURHCMBBEX+IAC0VCk… — 200 — 0 B — 0 ms — datahttps://image.stern.de/37315094/t/LV/v4/w480/r1.5/-/nikotin.jpgimage.stern.de/37315094/t/LV/v4/w48... https://image.stern.de/37315094/t/LV/v4/w480/r1.5/-/nikotin.jpg — 200 — 21.5 KiB — 32 ms — h2https://image.stern.de/36558924/t/7m/v15/w240/r1/-/rauchen-gesundheitsschaden-1.jpgimage.stern.de/36558924/t/7m/v15/w2... https://image.stern.de/36558924/t/7m/v15/w240/r1/-/rauchen-gesundheitsschaden-1.jpg — 200 — 8.4 KiB — 81 ms — h2https://image.stern.de/37264102/t/GD/v6/w240/r1/-/lunge-lungenkrebs-screening.gifimage.stern.de/37264102/t/GD/v6/w24... https://image.stern.de/37264102/t/GD/v6/w240/r1/-/lunge-lungenkrebs-screening.gif — 200 — 1.4 MiB — 141 ms — 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h2https://baseendpoint.stern.de/wrapper/v2/messages?hasCsp=true&env=prod&body=%7B%22accountId%22%3A212%2C%22campaignEnv%22%3A%22prod%22%2C%22campaigns%22%3A%7B%22gdpr%22%3A%7B%22consentStatus%22%3A%7B%7D%2C%22targetingParams%22%3A%7B%22darkMode%22%3Afalse%2C%22isInApp%22%3Afalse%2C%22isLoggedIn%22%3Afalse%2C%22isPLUSSubscriber%22%3Afalse%2C%22isPURSubscriber%22%3Afalse%7D%7D%7D%2C%22clientMMSOrigin%22%3A%22https%3A%2F%2Fbaseendpoint.stern.de%22%2C%22hasCSP%22%3Atrue%2C%22includeData%22%3A%7B%22localState%22%3A%7B%22type%22%3A%22string%22%7D%2C%22actions%22%3A%7B%22type%22%3A%22RecordString%22%7D%2C%22cookies%22%3A%7B%22type%22%3A%22RecordString%22%7D%7D%2C%22propertyHref%22%3A%22https%3A%2F%2Fwww.stern.de%2F%22%7D&localState=null&metadata=%7B%22gdpr%22%3A%7B%22applies%22%3Atrue%7D%7D&nonKeyedLocalState=null&ch=5034664475034664476443&scriptVersion=4.40.1&scriptType=unifiedbaseendpoint.stern.de/wrapper/v2/me... https://baseendpoint.stern.de/wrapper/v2/messages?hasCsp=true&env=prod&body=%7B%22accountId%22%3A212%2C%22campaignEnv%22%3A%22prod%22%2C%22campaigns%22%3A%7B%22gdpr%22%3A%7B%22consentStatus%22%3A%7B%7D%2C%22targetingParams%22%3A%7B%22darkMode%22%3Afalse%2C%22isInApp%22%3Afalse%2C%22isLoggedIn%22%3Afalse%2C%22isPLUSSubscriber%22%3Afalse%2C%22isPURSubscriber%22%3Afalse%7D%7D%7D%2C%22clientMMSOrigin%22%3A%22https%3A%2F%2Fbaseendpoint.stern.de%22%2C%22hasCSP%22%3Atrue%2C%22includeData%22%3A%7B%22localState%22%3A%7B%22type%22%3A%22string%22%7D%2C%22actions%22%3A%7B%22type%22%3A%22RecordString%22%7D%2C%22cookies%22%3A%7B%22type%22%3A%22RecordString%22%7D%7D%2C%22propertyHref%22%3A%22https%3A%2F%2Fwww.stern.de%2F%22%7D&localState=null&metadata=%7B%22gdpr%22%3A%7B%22applies%22%3Atrue%7D%7D&nonKeyedLocalState=null&ch=5034664475034664476443&scriptVersion=4.40.1&scriptType=unified — 200 — 10.3 KiB — 81 ms — h2https://hl.upscore.com/configuration/stern.dehl.upscore.com/configuration/stern.... https://hl.upscore.com/configuration/stern.de — 200 — 0 B — 1 ms — h2https://files.upscore.com/config/stern.de.jsfiles.upscore.com/config/stern.de.j... https://files.upscore.com/config/stern.de.js — 200 — 2.4 KiB — 25 ms — h2https://static.cleverpush.com/sdk/chunk/9835.39db0887a7e918b5270c.jsstatic.cleverpush.com/sdk/chunk/983... https://static.cleverpush.com/sdk/chunk/9835.39db0887a7e918b5270c.js — 200 — 1.7 KiB — 30 ms — h2https://static.cleverpush.com/sdk/chunk/4663.8df372eda3e524bfb908.jsstatic.cleverpush.com/sdk/chunk/466... https://static.cleverpush.com/sdk/chunk/4663.8df372eda3e524bfb908.js — 200 — 977 B — 28 ms — h2https://static.cleverpush.com/sdk/chunk/4005.842a72578247a54956f9.jsstatic.cleverpush.com/sdk/chunk/400... https://static.cleverpush.com/sdk/chunk/4005.842a72578247a54956f9.js — 200 — 10.1 KiB — 31 ms — h2https://static.cleverpush.com/sdk/chunk/8115.0c280d8ad5f540cb0b78.jsstatic.cleverpush.com/sdk/chunk/811... https://static.cleverpush.com/sdk/chunk/8115.0c280d8ad5f540cb0b78.js — 200 — 5.3 KiB — 29 ms — h2https://baseendpoint.stern.de/index.html?hasCsp=true&message_id=1466890&consentUUID=null&consent_origin=https%3A%2F%2Fbaseendpoint.stern.de%2Fconsent%2Ftcfv2&preload_message=true&version=v1baseendpoint.stern.de/index.html?ha... https://baseendpoint.stern.de/index.html?hasCsp=true&message_id=1466890&consentUUID=null&consent_origin=https%3A%2F%2Fbaseendpoint.stern.de%2Fconsent%2Ftcfv2&preload_message=true&version=v1 — 200 — 2.2 KiB — 4 ms — h2https://cdn-gl.nmrodam.com/novms/html/ls.htmlcdn-gl.nmrodam.com/novms/html/ls.ht... https://cdn-gl.nmrodam.com/novms/html/ls.html — 200 — 3.9 KiB — 42 ms — h2https://baseendpoint.stern.de/Notice.30929.cssbaseendpoint.stern.de/Notice.30929.... https://baseendpoint.stern.de/Notice.30929.css — 200 — 6.7 KiB — 17 ms — h2https://baseendpoint.stern.de/polyfills.01516.jsbaseendpoint.stern.de/polyfills.015... https://baseendpoint.stern.de/polyfills.01516.js — 200 — 2.3 KiB — 21 ms — h2https://baseendpoint.stern.de/Notice.8f529.jsbaseendpoint.stern.de/Notice.8f529.... https://baseendpoint.stern.de/Notice.8f529.js — 200 — 91.2 KiB — 42 ms — h2https://hit-pool.upscore.com/hit-pool.upscore.com/ https://hit-pool.upscore.com/ — 200 — 133 B — 91 ms — h2https://static.cleverpush.com/sdk/chunk/6103.1d433fb3b85916b5e67d.jsstatic.cleverpush.com/sdk/chunk/610... https://static.cleverpush.com/sdk/chunk/6103.1d433fb3b85916b5e67d.js — 200 — 10.1 KiB — 33 ms — h2https://static.cleverpush.com/sdk/chunk/7720.a2e15c52f6bd4debe3fe.jsstatic.cleverpush.com/sdk/chunk/772... https://static.cleverpush.com/sdk/chunk/7720.a2e15c52f6bd4debe3fe.js — 200 — 13.7 KiB — 31 ms — h2https://benelph.de/160x600/e5198d009afaa870668b.pngbenelph.de/160x600/e5198d009afaa870... https://benelph.de/160x600/e5198d009afaa870668b.png — 200 — 365 B — 130 ms — http/1.1https://baseendpoint.stern.de/consent/tcfv2/vendor-list/categories?siteId=243baseendpoint.stern.de/consent/tcfv2... https://baseendpoint.stern.de/consent/tcfv2/vendor-list/categories?siteId=243 — 200 — 2.4 KiB — 5 ms — h2https://secure-eu.nmrodam.com/cgi-bin/gn?prd=session&c9=devid,&c13=asid,P1E8673EE-4260-43FD-8787-365EDCEE462D&sessionId=0gsz1yhxct0oxyesfhsoyhtmqjxfs1776808745&c16=sdkv,bj.6.0.0&uoo=&fp_id=&fp_cr_tm=&fp_acc_tm=&fp_emm_tm=&ve_id=&c30=bldv,6.0.0.673&uid2=&uid2_token=&hem_sha256=&hem_sha1=&hem_md5=&hem_unknown=&sdd=&retry=0secure-eu.nmrodam.com/cgi-bin/gn?pr... https://secure-eu.nmrodam.com/cgi-bin/gn?prd=session&c9=devid,&c13=asid,P1E8673EE-4260-43FD-8787-365EDCEE462D&sessionId=0gsz1yhxct0oxyesfhsoyhtmqjxfs1776808745&c16=sdkv,bj.6.0.0&uoo=&fp_id=&fp_cr_tm=&fp_acc_tm=&fp_emm_tm=&ve_id=&c30=bldv,6.0.0.673&uid2=&uid2_token=&hem_sha256=&hem_sha1=&hem_md5=&hem_unknown=&sdd=&retry=0 — 200 — 377 B — 163 ms — h2https://0gsz1yhxct0oxyesfhsoyhtmqjxfs1776808745.nuid.nmrodam.com/0gsz1yhxct0oxyesfhsoyhtmqjxfs177680... https://0gsz1yhxct0oxyesfhsoyhtmqjxfs1776808745.nuid.nmrodam.com/ — 200 — 351 B — 56 ms — h2https://static.cleverpush.com/sdk/chunk/2156.9dd3a5210cbe0796604c.jsstatic.cleverpush.com/sdk/chunk/215... https://static.cleverpush.com/sdk/chunk/2156.9dd3a5210cbe0796604c.js — 200 — 6.7 KiB — 27 ms — h2https://static.cleverpush.com/sdk/chunk/9800.8ebec4fd1ace49024338.jsstatic.cleverpush.com/sdk/chunk/980... https://static.cleverpush.com/sdk/chunk/9800.8ebec4fd1ace49024338.js — 200 — 2.8 KiB — 28 ms — h2https://static.cleverpush.com/sdk/chunk/1731.3da4d54e920d6dab7df3.jsstatic.cleverpush.com/sdk/chunk/173... https://static.cleverpush.com/sdk/chunk/1731.3da4d54e920d6dab7df3.js — 200 — 2.1 KiB — 33 ms — h2https://static.cleverpush.com/sdk/chunk/2447.c6d5e451513d847e737e.jsstatic.cleverpush.com/sdk/chunk/244... https://static.cleverpush.com/sdk/chunk/2447.c6d5e451513d847e737e.js — 200 — 641 B — 29 ms — h2https://static.cleverpush.com/sdk/chunk/438.a5234b9207e779f1553e.jsstatic.cleverpush.com/sdk/chunk/438... https://static.cleverpush.com/sdk/chunk/438.a5234b9207e779f1553e.js — 200 — 1.6 KiB — 30 ms — h2data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='32' fill='none'%3E%…www.w3.org/2000/svg' width='24' hei... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='32' fill='none'%3E%… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='16' fill='none'%3E%…www.w3.org/2000/svg' width='26' hei... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='16' fill='none'%3E%… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='16' fill='none'%3E%…www.w3.org/2000/svg' width='20' hei... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='16' fill='none'%3E%… — 200 — 0 B — 0 ms — datahttps://www.stern.de/public/SternVariable-4OGB3BYX.woff2www.stern.de/public/SternVariable-4... https://www.stern.de/public/SternVariable-4OGB3BYX.woff2 — 200 — 0 B — 2 ms — h2https://static.cleverpush.com/sdk/chunk/8728.ac90515a8e1b5e4eb683.jsstatic.cleverpush.com/sdk/chunk/872... https://static.cleverpush.com/sdk/chunk/8728.ac90515a8e1b5e4eb683.js — 200 — 9.8 KiB — 27 ms — h2https://static.cleverpush.com/sdk/chunk/1376.60eb28416e8e6a1d18d8.jsstatic.cleverpush.com/sdk/chunk/137... https://static.cleverpush.com/sdk/chunk/1376.60eb28416e8e6a1d18d8.js — 200 — 4.4 KiB — 30 ms — h2https://static.cleverpush.com/sdk/chunk/4862.91fd1994b1f4ce253f68.jsstatic.cleverpush.com/sdk/chunk/486... https://static.cleverpush.com/sdk/chunk/4862.91fd1994b1f4ce253f68.js — 200 — 6.1 KiB — 27 ms — h2https://www.stern.de/public/favicon-U7MYFH7J.svgwww.stern.de/public/favicon-U7MYFH7... https://www.stern.de/public/favicon-U7MYFH7J.svg — 200 — 515 B — 21 ms — h2https://www.stern.de/public/icon-192-G7QL43AZ.pngwww.stern.de/public/icon-192-G7QL43... https://www.stern.de/public/icon-192-G7QL43AZ.png — 200 — 3.5 KiB — 38 ms — h2https://www.stern.de/public/favicon-FMX3RXE2.icowww.stern.de/public/favicon-FMX3RXE... https://www.stern.de/public/favicon-FMX3RXE2.ico — 200 — 2.1 KiB — 36 ms — h2https://hit-pool.upscore.com/hit-pool.upscore.com/ https://hit-pool.upscore.com/ — 200 — 76 B — 45 ms — h2blob:https://www.stern.de/568752b8-9cf7-4b8c-9488-ea5f50d3b750www.stern.de/568752b8-9cf7-4b8c-948... blob:https://www.stern.de/568752b8-9cf7-4b8c-9488-ea5f50d3b750 — -1 — 0 B — 0 ms — https://secure-eu.nmrodam.com/cgi-bin/gn?prd=dcr&ci=de-205177&ch=de-205177_c42_home_P&asn=home&fp_id=&fp_cr_tm=&fp_acc_tm=&fp_emm_tm=&ve_id=&sessionId=0gsz1yhxct0oxyesfhsoyhtmqjxfs1776808745&prv=1&c6=vc,c42&ca=NA&c13=asid,P1E8673EE-4260-43FD-8787-365EDCEE462D&c32=segA,homepage&c33=segB,CPI&c34=segC,NA&c15=apn,&sup=1&segment2=&segment1=&forward=0&plugv=&playerv=&ad=0&cr=V&c9=devid,&enc=true&c1=nuid,999&at=view&rt=text&c16=sdkv,bj.6.0.0&c27=cln,0&crs=&lat=&lon=&c29=plid,17768087450813970&c30=bldv,6.0.0.673&st=dcragf&c7=osgrp,&c8=devgrp,&c10=plt,&c40=adbid,&c14=osver,NA&c26=dmap,1&dd=&hrd=&wkd=&c35=adrsid,&c36=cref1,&c37=cref2,&c11=agg,1&c12=apv,&c51=adl,0&c52=noad,0&pc=NA&c53=fef,n&c54=oad,&c55=cref3,&c57=adldf,2&ai=3000082&c3=st,c&c64=starttm,1776808746&adid=3000082&c58=isLive,false&c59=sesid,&c61=createtm,1776808747&c63=pipMode,&uoo=&c68=bndlid,&nodeTM=&logTM=&c73=phtype,&c74=dvcnm,&c76=adbsnid,&c44=progen,&davty=0&si=https%3A%2F%2Fwww.stern.de%2F&c66=mediaurl,&sdd=&c62=sendTime,1776808747&rnd=709892secure-eu.nmrodam.com/cgi-bin/gn?pr... https://secure-eu.nmrodam.com/cgi-bin/gn?prd=dcr&ci=de-205177&ch=de-205177_c42_home_P&asn=home&fp_id=&fp_cr_tm=&fp_acc_tm=&fp_emm_tm=&ve_id=&sessionId=0gsz1yhxct0oxyesfhsoyhtmqjxfs1776808745&prv=1&c6=vc,c42&ca=NA&c13=asid,P1E8673EE-4260-43FD-8787-365EDCEE462D&c32=segA,homepage&c33=segB,CPI&c34=segC,NA&c15=apn,&sup=1&segment2=&segment1=&forward=0&plugv=&playerv=&ad=0&cr=V&c9=devid,&enc=true&c1=nuid,999&at=view&rt=text&c16=sdkv,bj.6.0.0&c27=cln,0&crs=&lat=&lon=&c29=plid,17768087450813970&c30=bldv,6.0.0.673&st=dcragf&c7=osgrp,&c8=devgrp,&c10=plt,&c40=adbid,&c14=osver,NA&c26=dmap,1&dd=&hrd=&wkd=&c35=adrsid,&c36=cref1,&c37=cref2,&c11=agg,1&c12=apv,&c51=adl,0&c52=noad,0&pc=NA&c53=fef,n&c54=oad,&c55=cref3,&c57=adldf,2&ai=3000082&c3=st,c&c64=starttm,1776808746&adid=3000082&c58=isLive,false&c59=sesid,&c61=createtm,1776808747&c63=pipMode,&uoo=&c68=bndlid,&nodeTM=&logTM=&c73=phtype,&c74=dvcnm,&c76=adbsnid,&c44=progen,&davty=0&si=https%3A%2F%2Fwww.stern.de%2F&c66=mediaurl,&sdd=&c62=sendTime,1776808747&rnd=709892 — 200 — 377 B — 134 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 5891ms · 1110KB · €28/mo
Unattributable
Other
Costly
Execution 1180ms
Transfer 0 KB
Monthly Cost €6/mo
www.stern.de
Other
Costly
Execution 897ms
Transfer 158 KB
Unused 21%
Monthly Cost €4/mo
www.stern.de
Other
Costly
Execution 845ms
Transfer 57 KB
Monthly Cost €4/mo
www.stern.de
Other
Costly
Execution 598ms
Transfer 141 KB
Unused 80%
Monthly Cost €3/mo
baseendpoint.stern.de
Other
Costly
Execution 593ms
Transfer 91 KB
Unused 69%
Monthly Cost €3/mo
www.stern.de
Other
Costly
Execution 469ms
Transfer 78 KB
Unused 67%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 365ms
Transfer 182 KB
Unused 42%
Monthly Cost €2/mo
baseendpoint.stern.de
Other
Costly
Execution 249ms
Transfer 40 KB
Monthly Cost €1/mo
www.stern.de
Other
Optional
Execution 181ms
Transfer 156 KB
Unused 51%
Monthly Cost €1/mo
jpi6gyfn8p.kameleoon.io
Other
Optional
Execution 166ms
Transfer 34 KB
Monthly Cost €1/mo
static.cleverpush.com
Other
Optional
Execution 132ms
Transfer 51 KB
Monthly Cost €1/mo
cdn-gl.nmrodam.com
Other
Optional
Execution 100ms
Transfer 56 KB
Unused 42%
Monthly Cost €0/mo
www.stern.de
Other
Optional
Execution 64ms
Transfer 42 KB
Unused 93%
Monthly Cost €0/mo
baseendpoint.stern.de
Other
Optional
Execution 53ms
Transfer 24 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • Unattributable adds 1180ms and costs ~€6/month
  • www.stern.de adds 897ms and costs ~€4/month
  • www.stern.de adds 845ms and costs ~€4/month
  • www.stern.de adds 598ms and costs ~€3/month
  • baseendpoint.stern.de adds 593ms and costs ~€3/month
  • www.stern.de adds 469ms and costs ~€2/month
  • Google Tag Manager adds 365ms and costs ~€2/month
  • baseendpoint.stern.de adds 249ms and costs ~€1/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

Unattributable takes 1180ms 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.stern.de takes 897ms 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.stern.de takes 845ms 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.stern.de takes 598ms 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

80% of www.stern.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

baseendpoint.stern.de takes 593ms 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 baseendpoint.stern.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

www.stern.de takes 469ms 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.stern.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

Google Tag Manager takes 365ms 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

baseendpoint.stern.de takes 249ms 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

51% of www.stern.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

93% of www.stern.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.

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