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https://hamburg.de

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
68
GRADE
D
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
43
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
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.
92
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.

9.25 s

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

13.83 s

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

520 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.

9.25 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.

21.98 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
4.1 MB transferred, 49 requests
FIX
4.1 MB transferred, 49 requests
Critical::
Page weighs 6.2 MB (4.1 MB transferred)
Warning::
Images are 2.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.1 MB
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Info::
49 HTTP requests
Info::
Estimated 0.87 g CO2 per page load
4.1 MB / 2.4 MB budget
4.1 MB transferred
49 requests
0.87 g CO2 per page load
Images 2.1 MiB 51%
JavaScript 1.4 MiB 33%
Other 388.2 KiB 9%
Fonts 142.1 KiB 3%
CSS 111.8 KiB 3%
HTML 32.4 KiB 1%
Other 6.5 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

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 (4.1 MiB of 4.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3334ms total JS execution
FIX
3334ms total JS execution
Warning::
https://www.hamburg.de/resource/themes/km-i/js/ind...: 1149ms CPU time
Warning::
https://www.hamburg.de/: 887ms CPU time
Warning::
Unattributable: 432ms CPU time
Warning::
https://eyeable.hamburg.de/public/js/eyeAble.js: 422ms CPU time
Info::
https://code.etracker.com/code/e.js: 237ms CPU time
Warning::
Third-party scripts: 3334ms (100% of total)

Main Thread Breakdown

Script Evaluation 35% Style & Layout 26% Other 20% Script Parsing & Compilation 10% Parse HTML & CSS 5% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.hamburg.de/resource/themes/km-i/js/index-863840-32.js1149ms692ms94ms3rd
https://www.hamburg.de/887ms8ms3ms3rd
Unattributable432ms8ms0ms3rd
https://eyeable.hamburg.de/public/js/eyeAble.js422ms131ms79ms3rd
https://code.etracker.com/code/e.js237ms221ms13ms3rd
https://cdn.contentflow.net/sdk/beta/sdk.js208ms87ms120ms3rd
F
JS Bundles
Action
9 scripts, 1.0 MB unused
FIX
9 scripts, 1.0 MB unused
Warning::
https://cdn.contentflow.net/sdk/beta/sdk.js: 793 KB unused (86%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.hamburg.de/resource/themes/km-i/js/ind...: 116 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://eyeable.hamburg.de/public/js/eyeAble.js: 92 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.hamburg.de/resource/themes/km-i/js/com...: 27 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.0 MB
1028 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.contentflow.net/sdk/beta/sdk.js933 KB793 KB (86%)✓3rd
https://www.hamburg.de/resource/themes/km-i/js/index-863840-32.js230 KB116 KB (51%)✓3rd
https://eyeable.hamburg.de/public/js/eyeAble.js129 KB92 KB (71%)✓3rd
https://www.hamburg.de/resource/themes/km-i/js/commons-5446-13.js39 KB27 KB (70%)✓3rd
https://conword.hamburg.de/conword.js20 KB—✓3rd
https://eyeable.hamburg.de/configs/www.hamburg.de.js1 KB—✓3rd
https://code.etracker.com/code/e.js31 KB—✓3rd
https://code.etracker.com/t.js?v=ee485f6&et=PEgCU39 KB—✓3rd
https://www.etracker.de/cntcc?&&et=PEgCU3&v=6.0&tc=17768894083677&pagename=Hamburg.de%20Startseite%20-%20hamburg.de&ilevel=1&areas=hamburg-de_29066.navigationspunkt&et_source_url=https%3A%2F%2Fwww.hamburg.de%2F&cc_ordercurr=EUR&cc_ordertype=lead&cc_baskettype=basket&block_cookies=true&respect_dnt=true&et_bs=1&code_source=%2F%2Fcode.etracker.com%2Fcode%2Fe.js&code_async=true&page_id=889408171&et_sbscr=0&coid=e33ba1ffd26fcdede04bffeec3b3f02a&et_cblk=1&et_cd=www.hamburg.de&dh=SvuDWGR5Zz5yxeh23%2FH52X0tWnB%2FrW4R&clt=240 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

F
Page Weight Inventory
Action
49 resources · 4.1 MB · 1.0 MB savings available
FIX
49 resources · 4.1 MB · 1.0 MB savings available
Warning::
Page weight 3.1 MB over 1MB target
Got: 4.1 MB Expected: ≤ 1 MB
Info::
~1.0 MB of savings available
Warning::
48 third-party resources (100% of weight)
Info::
4 resources over 200KB
49 resources · 4.1 MiB · 48 third-party 3.1 MiB over 1MB target
Image 60% · 2.5 MiB
JavaScript 33% · 1.4 MiB
Font 3% · 142.1 KiB
CSS 3% · 111.8 KiB
Document 1% · 32.6 KiB

~1.0 MiB of savings available

Remove unused JavaScript: 1.0 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
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
https://www.hamburg.de/resource/image/917926/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/267700/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1118326/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/905744/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1055774/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1149712/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1136430/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1007560/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1000980/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/900314/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/404234/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/876186/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1150764/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/265458/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/847228/lands... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/crblob/29060/429ad... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1092022/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hamburg.de/resource/image/1056418/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 2.1 MB
0 oversized -0 KB
27 legacy format
18 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
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
5 fonts (142 KB)
PASS
5 fonts (142 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

142 KB total

Render-blocking

0

of 5

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 9.3 s LCP 13.8 shttps://www.hamburg.de/resource/crblob/1144916/17b5ffaf899ab276df5efa2b04795240/lato-regular-woff2-data.woff2lato-regular-woff2-data... https://www.hamburg.de/resource/crblob/1144916/17b5ffaf899ab276df5efa2b04795240/lato-regular-woff2-data.woff2 — 25.1 KiB — 294 ms — font-display: swaphttps://www.hamburg.de/resource/crblob/1144922/5af811855e834758656c1c1e75706f5b/lato-thin-woff2-data.woff2lato-thin-woff2-data.woff2 https://www.hamburg.de/resource/crblob/1144922/5af811855e834758656c1c1e75706f5b/lato-thin-woff2-data.woff2 — 23.1 KiB — 267 ms — font-display: swaphttps://www.hamburg.de/resource/crblob/1144912/d1ec29d9562239f3d64c70b694d2bffd/lato-medium-woff2-data.woff2lato-medium-woff2-data.... https://www.hamburg.de/resource/crblob/1144912/d1ec29d9562239f3d64c70b694d2bffd/lato-medium-woff2-data.woff2 — 43.3 KiB — 272 ms — font-display: swaphttps://www.hamburg.de/resource/crblob/1144906/5e5aebe3d3716bbce2086032a2c0f367/lato-italic-woff2-data.woff2lato-italic-woff2-data.... https://www.hamburg.de/resource/crblob/1144906/5e5aebe3d3716bbce2086032a2c0f367/lato-italic-woff2-data.woff2 — 26.1 KiB — 273 ms — font-display: swaphttps://www.hamburg.de/resource/crblob/1144902/0591233a3b319bd1a52ccf6966dcc54d/lato-bold-woff2-data.woff2lato-bold-woff2-data.woff2 https://www.hamburg.de/resource/crblob/1144902/0591233a3b319bd1a52ccf6966dcc54d/lato-bold-woff2-data.woff2 — 24.5 KiB — 273 ms — font-display: swap
lato-regular-woff2-data... woff2 swap
Size 25 KB
Load time 294 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
lato-thin-woff2-data.woff2 woff2 swap
Size 23 KB
Load time 267 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
lato-medium-woff2-data.... woff2 swap
Size 43 KB
Load time 272 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
lato-italic-woff2-data.... woff2 swap
Size 26 KB
Load time 273 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
lato-bold-woff2-data.woff2 woff2 swap
Size 25 KB
Load time 273 ms
Start 1.5 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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
1
preload
—
dns-prefetch
—
prefetch
—

1 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
49 requests over 2979ms
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 9.3 s LCP 13.8 shttps://hamburg.de// https://hamburg.de/ — 301 — 244 B — 350 ms — http/1.1https://www.hamburg.de/www.hamburg.de/ https://www.hamburg.de/ — 200 — 32.4 KiB — 440 ms — h2https://cdn.contentflow.net/sdk/beta/sdk.jscdn.contentflow.net/sdk/beta/sdk.js https://cdn.contentflow.net/sdk/beta/sdk.js — 200 — 932.7 KiB — 109 ms — h2https://conword.hamburg.de/conword.jsconword.hamburg.de/conword.js https://conword.hamburg.de/conword.js — 200 — 20.2 KiB — 442 ms — http/1.1https://www.hamburg.de/resource/themes/km-i/css/km-i-5430-34.csswww.hamburg.de/resource/themes/km-i... https://www.hamburg.de/resource/themes/km-i/css/km-i-5430-34.css — 200 — 101.0 KiB — 242 ms — h2https://www.hamburg.de/resource/themes/km-i/css/temp-fixes/mediathek-temp-fix-1119792-2.csswww.hamburg.de/resource/themes/km-i... https://www.hamburg.de/resource/themes/km-i/css/temp-fixes/mediathek-temp-fix-1119792-2.css — 200 — 189 B — 156 ms — h2https://eyeable.hamburg.de/public/js/eyeAble.jseyeable.hamburg.de/public/js/eyeAbl... https://eyeable.hamburg.de/public/js/eyeAble.js — 200 — 129.1 KiB — 625 ms — http/1.1https://eyeable.hamburg.de/configs/www.hamburg.de.jseyeable.hamburg.de/configs/www.hamb... https://eyeable.hamburg.de/configs/www.hamburg.de.js — 200 — 1019 B — 371 ms — http/1.1https://www.hamburg.de/resource/crblob/29060/429adfbcae411af8107df29405082120/hamburg-de-logo-data.pngwww.hamburg.de/resource/crblob/2906... https://www.hamburg.de/resource/crblob/29060/429adfbcae411af8107df29405082120/hamburg-de-logo-data.png — 200 — 10.3 KiB — 151 ms — h2https://www.hamburg.de/resource/image/1149712/landscape_ratio16x9/698/416/466aeac10e2c3cec655ed2a2391c5034/9F8F14485BAB778A99537A58620226E2/kirschbluete-und-alsterfontaene.jpgwww.hamburg.de/resource/image/11497... https://www.hamburg.de/resource/image/1149712/landscape_ratio16x9/698/416/466aeac10e2c3cec655ed2a2391c5034/9F8F14485BAB778A99537A58620226E2/kirschbluete-und-alsterfontaene.jpg — 200 — 44.0 KiB — 193 ms — h2https://www.hamburg.de/resource/image/1136430/landscape_ratio16x9/736/414/1cf258e958d21cb051524e3cecffa43e/5719FC320ED37093E74241FC28DE11BA/bild-visualisierung-olympia-eroeffnungsfeier.pngwww.hamburg.de/resource/image/11364... https://www.hamburg.de/resource/image/1136430/landscape_ratio16x9/736/414/1cf258e958d21cb051524e3cecffa43e/5719FC320ED37093E74241FC28DE11BA/bild-visualisierung-olympia-eroeffnungsfeier.png — 200 — 673.2 KiB — 331 ms — h2https://www.hamburg.de/resource/image/1007560/landscape_ratio16x9/736/414/e39dbb5072593a18f1925eaaf4b8e803/CA684FC39C74FA650DE91C435A0F4A43/senioren-gruppe.jpgwww.hamburg.de/resource/image/10075... https://www.hamburg.de/resource/image/1007560/landscape_ratio16x9/736/414/e39dbb5072593a18f1925eaaf4b8e803/CA684FC39C74FA650DE91C435A0F4A43/senioren-gruppe.jpg — 200 — 70.9 KiB — 148 ms — h2https://www.hamburg.de/resource/image/404234/landscape_ratio16x9/736/414/c87f966b73c40e7f2aa8ed8578c8eb3b/BD3E4F53883E0D5A9E10A108F7579BB7/diary-slam.jpgwww.hamburg.de/resource/image/40423... https://www.hamburg.de/resource/image/404234/landscape_ratio16x9/736/414/c87f966b73c40e7f2aa8ed8578c8eb3b/BD3E4F53883E0D5A9E10A108F7579BB7/diary-slam.jpg — 200 — 45.2 KiB — 91 ms — h2https://www.hamburg.de/resource/image/876186/landscape_ratio16x9/736/414/ae0954b1b16087ccbbd143683432c4d9/45EF95414C7B270A706BBEA4E2A65E73/juni-pb-parksee-wasserspiele-kbittner.jpgwww.hamburg.de/resource/image/87618... https://www.hamburg.de/resource/image/876186/landscape_ratio16x9/736/414/ae0954b1b16087ccbbd143683432c4d9/45EF95414C7B270A706BBEA4E2A65E73/juni-pb-parksee-wasserspiele-kbittner.jpg — 200 — 40.8 KiB — 90 ms — h2https://www.hamburg.de/resource/image/917926/landscape_ratio4x3/681/511/b8213899b4649e3bc7889e7a8a57850e/1350AA21FCE6F43288B3C4BC37F425AD/icon-barrierefreiheit-tuerkis.pngwww.hamburg.de/resource/image/91792... https://www.hamburg.de/resource/image/917926/landscape_ratio4x3/681/511/b8213899b4649e3bc7889e7a8a57850e/1350AA21FCE6F43288B3C4BC37F425AD/icon-barrierefreiheit-tuerkis.png — 200 — 20.2 KiB — 89 ms — h2https://www.hamburg.de/resource/image/267700/landscape_ratio4x3/681/511/3d54132fb5f23e774d2fef9c70459fed/A71C792855EF3999715618F3C108A8EF/zeitung.pngwww.hamburg.de/resource/image/26770... https://www.hamburg.de/resource/image/267700/landscape_ratio4x3/681/511/3d54132fb5f23e774d2fef9c70459fed/A71C792855EF3999715618F3C108A8EF/zeitung.png — 200 — 189.6 KiB — 109 ms — 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h2https://www.hamburg.de/resource/image/964312/landscape_ratio4x3/768/576/a593c1946f95813fabf6351414233f29/227FFC8C609BFBFA99C9A96E260DD921/38dekt-viva-voce-und-symphonieorchester-bongard-45.jpgwww.hamburg.de/resource/image/96431... https://www.hamburg.de/resource/image/964312/landscape_ratio4x3/768/576/a593c1946f95813fabf6351414233f29/227FFC8C609BFBFA99C9A96E260DD921/38dekt-viva-voce-und-symphonieorchester-bongard-45.jpg — 200 — 76.7 KiB — 275 ms — h2https://www.hamburg.de/resource/image/1163306/portrait_ratio1x1/681/681/b0706dccbb27f784e4946c8d5588974a/E52FC53E689139161745E0411B04E4CC/stadtmodell-0-teaserbild.jpgwww.hamburg.de/resource/image/11633... https://www.hamburg.de/resource/image/1163306/portrait_ratio1x1/681/681/b0706dccbb27f784e4946c8d5588974a/E52FC53E689139161745E0411B04E4CC/stadtmodell-0-teaserbild.jpg — 200 — 100.7 KiB — 275 ms — h2https://www.hamburg.de/resource/image/1164036/portrait_ratio1x1/681/681/4559cd2904cc22bcbdacf32a3ba5ca4d/B6452A8E239103829FBABE71F88ED78C/2026-04-13-pm-huus-copyright-tom-menz.jpgwww.hamburg.de/resource/image/11640... https://www.hamburg.de/resource/image/1164036/portrait_ratio1x1/681/681/4559cd2904cc22bcbdacf32a3ba5ca4d/B6452A8E239103829FBABE71F88ED78C/2026-04-13-pm-huus-copyright-tom-menz.jpg — 200 — 77.8 KiB — 270 ms — h2https://www.hamburg.de/resource/image/1112074/portrait_ratio1x1/681/681/8f3b39d4d6cbeab59d15c70cfe97fbd8/173DB84E909C470C21EE7A3A7A55A6AE/plaza-der-elbphilharmonie.jpgwww.hamburg.de/resource/image/11120... https://www.hamburg.de/resource/image/1112074/portrait_ratio1x1/681/681/8f3b39d4d6cbeab59d15c70cfe97fbd8/173DB84E909C470C21EE7A3A7A55A6AE/plaza-der-elbphilharmonie.jpg — 200 — 55.1 KiB — 267 ms — h2https://www.hamburg.de/resource/image/1118326/portrait_ratio1x1/681/681/66049a28fd9bd1740bc19b9232d2fe1d/C0E947C773EEFB4B42482EAB730D8F51/pm-umsatzsteuerbefreiung-von-bildungsangeboten-und-paedagogischen-initiativen.jpgwww.hamburg.de/resource/image/11183... https://www.hamburg.de/resource/image/1118326/portrait_ratio1x1/681/681/66049a28fd9bd1740bc19b9232d2fe1d/C0E947C773EEFB4B42482EAB730D8F51/pm-umsatzsteuerbefreiung-von-bildungsangeboten-und-paedagogischen-initiativen.jpg — 200 — 46.2 KiB — 313 ms — h2https://www.hamburg.de/resource/themes/km-i/js/commons-5446-13.jswww.hamburg.de/resource/themes/km-i... https://www.hamburg.de/resource/themes/km-i/js/commons-5446-13.js — 200 — 39.0 KiB — 283 ms — h2https://www.hamburg.de/resource/themes/km-i/js/index-863840-32.jswww.hamburg.de/resource/themes/km-i... https://www.hamburg.de/resource/themes/km-i/js/index-863840-32.js — 200 — 229.7 KiB — 358 ms — h2https://www.hamburg.de/resource/crblob/1144916/17b5ffaf899ab276df5efa2b04795240/lato-regular-woff2-data.woff2www.hamburg.de/resource/crblob/1144... https://www.hamburg.de/resource/crblob/1144916/17b5ffaf899ab276df5efa2b04795240/lato-regular-woff2-data.woff2 — 200 — 25.1 KiB — 294 ms — h2https://www.hamburg.de/resource/crblob/1144922/5af811855e834758656c1c1e75706f5b/lato-thin-woff2-data.woff2www.hamburg.de/resource/crblob/1144... https://www.hamburg.de/resource/crblob/1144922/5af811855e834758656c1c1e75706f5b/lato-thin-woff2-data.woff2 — 200 — 23.1 KiB — 267 ms — h2https://www.hamburg.de/resource/crblob/1144912/d1ec29d9562239f3d64c70b694d2bffd/lato-medium-woff2-data.woff2www.hamburg.de/resource/crblob/1144... https://www.hamburg.de/resource/crblob/1144912/d1ec29d9562239f3d64c70b694d2bffd/lato-medium-woff2-data.woff2 — 200 — 43.3 KiB — 272 ms — h2https://www.hamburg.de/resource/crblob/1144906/5e5aebe3d3716bbce2086032a2c0f367/lato-italic-woff2-data.woff2www.hamburg.de/resource/crblob/1144... https://www.hamburg.de/resource/crblob/1144906/5e5aebe3d3716bbce2086032a2c0f367/lato-italic-woff2-data.woff2 — 200 — 26.1 KiB — 273 ms — h2https://www.hamburg.de/resource/crblob/1144902/0591233a3b319bd1a52ccf6966dcc54d/lato-bold-woff2-data.woff2www.hamburg.de/resource/crblob/1144... https://www.hamburg.de/resource/crblob/1144902/0591233a3b319bd1a52ccf6966dcc54d/lato-bold-woff2-data.woff2 — 200 — 24.5 KiB — 273 ms — h2https://www.hamburg.de/resource/crblob/5368/f620e7916cf7cde62e714d83a4921077/icon-sprite-svg-data.svgwww.hamburg.de/resource/crblob/5368... https://www.hamburg.de/resource/crblob/5368/f620e7916cf7cde62e714d83a4921077/icon-sprite-svg-data.svg — 200 — 388.2 KiB — 105 ms — h2https://code.etracker.com/code/e.jscode.etracker.com/code/e.js https://code.etracker.com/code/e.js — 200 — 31.5 KiB — 418 ms — h2https://eyeable.hamburg.de/public/css/eyeAble.1.13.45.min.csseyeable.hamburg.de/public/css/eyeAb... https://eyeable.hamburg.de/public/css/eyeAble.1.13.45.min.css — 200 — 10.7 KiB — 88 ms — http/1.1https://static.hamburg.de/fhh/a11y-circle.svgstatic.hamburg.de/fhh/a11y-circle.s... https://static.hamburg.de/fhh/a11y-circle.svg — 200 — 982 B — 356 ms — http/1.1https://eyeable.hamburg.de/public/images/eye-able-active-check.svgeyeable.hamburg.de/public/images/ey... https://eyeable.hamburg.de/public/images/eye-able-active-check.svg — 200 — 2.6 KiB — 87 ms — http/1.1https://eyeable.hamburg.de/public/images/eye-able-black-white.svgeyeable.hamburg.de/public/images/ey... https://eyeable.hamburg.de/public/images/eye-able-black-white.svg — 200 — 1.7 KiB — 166 ms — http/1.1https://www.hamburg.de/resource/crblob/5436/f18fa8c1c89d66f29e6091680bebf3c6/favicon-ico-data.icowww.hamburg.de/resource/crblob/5436... https://www.hamburg.de/resource/crblob/5436/f18fa8c1c89d66f29e6091680bebf3c6/favicon-ico-data.ico — 200 — 5.5 KiB — 90 ms — h2https://www.hamburg.de/resource/crblob/5440/ee44bdf656f31ecb1a0b5a7c4d3f3a15/favicon-32x32-png-data.pngwww.hamburg.de/resource/crblob/5440... https://www.hamburg.de/resource/crblob/5440/ee44bdf656f31ecb1a0b5a7c4d3f3a15/favicon-32x32-png-data.png — 200 — 843 B — 90 ms — h2https://code.etracker.com/t.js?v=ee485f6&et=PEgCU3code.etracker.com/t.js?v=ee485f6&et... https://code.etracker.com/t.js?v=ee485f6&et=PEgCU3 — 200 — 9.3 KiB — 89 ms — h2https://www.etracker.de/cntcc?&&et=PEgCU3&v=6.0&tc=17768894083677&pagename=Hamburg.de%20Startseite%20-%20hamburg.de&ilevel=1&areas=hamburg-de_29066.navigationspunkt&et_source_url=https%3A%2F%2Fwww.hamburg.de%2F&cc_ordercurr=EUR&cc_ordertype=lead&cc_baskettype=basket&block_cookies=true&respect_dnt=true&et_bs=1&code_source=%2F%2Fcode.etracker.com%2Fcode%2Fe.js&code_async=true&page_id=889408171&et_sbscr=0&coid=e33ba1ffd26fcdede04bffeec3b3f02a&et_cblk=1&et_cd=www.hamburg.de&dh=SvuDWGR5Zz5yxeh23%2FH52X0tWnB%2FrW4R&clt=24www.etracker.de/cntcc?&&et=PEgCU3&v... https://www.etracker.de/cntcc?&&et=PEgCU3&v=6.0&tc=17768894083677&pagename=Hamburg.de%20Startseite%20-%20hamburg.de&ilevel=1&areas=hamburg-de_29066.navigationspunkt&et_source_url=https%3A%2F%2Fwww.hamburg.de%2F&cc_ordercurr=EUR&cc_ordertype=lead&cc_baskettype=basket&block_cookies=true&respect_dnt=true&et_bs=1&code_source=%2F%2Fcode.etracker.com%2Fcode%2Fe.js&code_async=true&page_id=889408171&et_sbscr=0&coid=e33ba1ffd26fcdede04bffeec3b3f02a&et_cblk=1&et_cd=www.hamburg.de&dh=SvuDWGR5Zz5yxeh23%2FH52X0tWnB%2FrW4R&clt=24 — 200 — 126 B — 432 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 3334ms · 1355KB · €36/mo
www.hamburg.de
Other
Costly
Execution 1149ms
Transfer 230 KB
Unused 51%
Monthly Cost €12/mo
www.hamburg.de
Other
Costly
Execution 887ms
Transfer 32 KB
Monthly Cost €10/mo
Unattributable
Other
Costly
Execution 432ms
Transfer 0 KB
Monthly Cost €5/mo
eyeable.hamburg.de
Other
Costly
Execution 422ms
Transfer 129 KB
Unused 71%
Monthly Cost €5/mo
code.etracker.com
Other
Costly
Execution 237ms
Transfer 31 KB
Monthly Cost €3/mo
cdn.contentflow.net
Other
Costly
Execution 208ms
Transfer 933 KB
Unused 86%
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • www.hamburg.de adds 1149ms and costs ~€12/month
  • www.hamburg.de adds 887ms and costs ~€10/month
  • Unattributable adds 432ms and costs ~€5/month
  • eyeable.hamburg.de adds 422ms and costs ~€5/month
  • code.etracker.com adds 237ms and costs ~€3/month
  • cdn.contentflow.net adds 208ms 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.hamburg.de takes 1149ms 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.hamburg.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.hamburg.de takes 887ms 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 432ms 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

eyeable.hamburg.de takes 422ms 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

71% of eyeable.hamburg.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

code.etracker.com takes 237ms 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

cdn.contentflow.net takes 208ms 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

86% of cdn.contentflow.net'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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