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https://tuv.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
34
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
70
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.
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.

4.17 s

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

18.05 s

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

1.48 s

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.

7.07 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.

18.68 s

Page Load Progression

518 ms
1.0 s
1.6 s
2.1 s
2.6 s
3.1 s
3.6 s
4.1 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
7.3 MB transferred, 67 requests
FIX
7.3 MB transferred, 67 requests
Critical::
Page weighs 10.2 MB (7.3 MB transferred)
Warning::
Images are 6.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 6.2 MB
Warning::
JavaScript is 624 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 624 KB
Info::
Fonts are 250 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 250 KB
Info::
67 HTTP requests
Info::
Estimated 1.5 g CO2 per page load
7.3 MB / 2.4 MB budget
7.3 MB transferred
67 requests
1.5 g CO2 per page load
Images 6.2 MiB 84%
JavaScript 623.6 KiB 8%
Fonts 250.3 KiB 3%
Other 140.5 KiB 2%
CSS 122.0 KiB 2%
HTML 41.7 KiB 1%
Other 2.8 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

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

Why this matters

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

Source: web.dev font loading

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (7.3 MiB of 7.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5793ms total JS execution
FIX
5793ms total JS execution
Warning::
https://www.tuv.com/system-media-files/js/scripts....: 1853ms CPU time
Warning::
https://consent.cookiebot.eu/93626a84-94d4-4a5f-8a...: 1186ms CPU time
Warning::
https://consent.cookiebot.eu/uc.js: 1164ms CPU time
Warning::
https://www.tuv.com/taiwan/tw/: 917ms CPU time
Warning::
Unattributable: 673ms CPU time
Warning::
Third-party scripts: 5793ms (100% of total)

Main Thread Breakdown

Script Evaluation 35% Style & Layout 25% Other 17% Parse HTML & CSS 14% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.tuv.com/system-media-files/js/scripts.js1853ms819ms291ms3rd
https://consent.cookiebot.eu/93626a84-94d4-4a5f-8a68-a23475d61c36/cc.js?renew=false&referer=www.tuv.com&dnt=false&init=false&georegions=%5B%7B%22r%22%3A%22DE%2CAW%2CAF%2CAO%2CAI%2CAX%2CAL%2CAD%2CAE%2CAM%2CAS%2CAQ%2CTF%2CAG%2CAU%2CAT%2CAZ%2CBI%2CBE%2CBJ%2CBQ%2CBF%2CBD%2CBG%2CBH%2CBS%2CBA%2CBL%2CBY%2CBZ%2CBM%2CBO%2CBB%2CBN%2CBT%2CBV%2CBW%2CCF%2CCA%2CCC%2CCH%2CCI%2CCM%2CCD%2CCG%2CCK%2CCO%2CKM%2CCV%2CCR%2CCU%2CCW%2CCX%2CKY%2CCY%2CCZ%2CDE%2CDJ%2CDM%2CDK%2CDO%2CDZ%2CEC%3BEG%2CER%2CEH%2CES%2CEE%2CET%2CFI%2CFJ%2CFK%2CFR%2CFO%2CFM%2CGA%2CGB%2CGE%2CGG%2CGH%2CGI%2CGN%2CGP%2CGM%2CGW%2CGQ%2CGR%2CGD%2CGL%2CGT%2CGF%2CGU%2CGY%2CHM%2CHN%2CHR%2CHT%2CHU%2CID%2CIM%2CIN%2CIO%2CIE%2CIR%2CIQ%2CIS%2CIL%2CIT%2CJM%2CJE%2CJO%2CKZ%2CKE%2CKG%2CKH%2CKI%2CKN%2CKR%2CKW%2CLA%2CLB%2CLR%2CLY%2CLC%2CLI%2CLK%2CLS%2CLT%2CLU%2CLV%2CMO%2CMF%2CMA%2CMC%2CMD%2CMG%2CMV%2CMH%2CMK%2CML%2CMT%2CMM%2CME%2CMN%2CMP%2CMZ%2CMR%2CMS%2CMQ%2CMU%2CMW%2CMY%2CYT%2CNA%2CNC%2CNE%2CNF%2CNG%2CNI%2CNU%2CNL%2CNO%2CNP%2CNR%2CNZ%2COM%2CPK%2CPA%2CPN%2CPE%2CPW%2CPG%2CPL%2CPR%2CKP%2CPT%2CPY%2CPS%2CPF%2CQA%2CRE%2CRO%2CRU%2CRW%2CSA%2CSD%2CSN%2CSG%2CGS%2CSH%2CSJ%2CSB%2CSL%2CSV%2CSM%2CSO%2CPM%2CRS%2CSS%2CST%2CSR%2CSK%2CSI%2CSE%2CSZ%2CSX%2CSC%2CSY%2CTC%2CTD%2CTG%2CTH%2CTJ%2CTK%2CTM%2CTL%2CTO%2CTT%2CTN%2CTR%2CTV%2CTZ%2CUG%2CUA%2CUM%2CUY%2CUZ%2CVA%2CVC%2CVE%2CVG%2CVI%2CVN%2CVU%2CWF%2CWS%2CYE%2CZA%2CZM%2CZW%22%2C%22i%22%3A%225860bf16-aac5-48c5-b1fe-608a994a8262%22%7D%5D1186ms393ms57ms3rd
https://consent.cookiebot.eu/uc.js1164ms790ms20ms3rd
https://www.tuv.com/taiwan/tw/917ms23ms9ms3rd
Unattributable673ms9ms0ms3rd
D
JS Bundles
Action
9 scripts, 349 KB unused
FIX
9 scripts, 349 KB unused
Warning::
https://www.tuv.com/system-media-files/js/scripts....: 349 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 349 KB
349 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.tuv.com/system-media-files/js/scripts.js508 KB349 KB (69%)✓3rd
https://consent.cookiebot.eu/uc.js30 KB—✓3rd
https://www.tuv.com/system-media-files/js/pti_booking-min.js1 KB—✓3rd
https://www.tuv.com/system-media-files/js/empulse/emp-session-ajax.js1 KB—✓3rd
https://www.tuv.com/system-media-files/js/google-requirements/sha256_encoder.js1 KB—✓3rd
https://consentcdn.cookiebot.eu/consentconfig/93626a84-94d4-4a5f-8a68-a23475d61c36/tuv.com/configuration.js1 KB—✓3rd
https://consent.cookiebot.eu/93626a84-94d4-4a5f-8a68-a23475d61c36/cc.js?renew=false&referer=www.tuv.com&dnt=false&init=false&georegions=%5B%7B%22r%22%3A%22DE%2CAW%2CAF%2CAO%2CAI%2CAX%2CAL%2CAD%2CAE%2CAM%2CAS%2CAQ%2CTF%2CAG%2CAU%2CAT%2CAZ%2CBI%2CBE%2CBJ%2CBQ%2CBF%2CBD%2CBG%2CBH%2CBS%2CBA%2CBL%2CBY%2CBZ%2CBM%2CBO%2CBB%2CBN%2CBT%2CBV%2CBW%2CCF%2CCA%2CCC%2CCH%2CCI%2CCM%2CCD%2CCG%2CCK%2CCO%2CKM%2CCV%2CCR%2CCU%2CCW%2CCX%2CKY%2CCY%2CCZ%2CDE%2CDJ%2CDM%2CDK%2CDO%2CDZ%2CEC%3BEG%2CER%2CEH%2CES%2CEE%2CET%2CFI%2CFJ%2CFK%2CFR%2CFO%2CFM%2CGA%2CGB%2CGE%2CGG%2CGH%2CGI%2CGN%2CGP%2CGM%2CGW%2CGQ%2CGR%2CGD%2CGL%2CGT%2CGF%2CGU%2CGY%2CHM%2CHN%2CHR%2CHT%2CHU%2CID%2CIM%2CIN%2CIO%2CIE%2CIR%2CIQ%2CIS%2CIL%2CIT%2CJM%2CJE%2CJO%2CKZ%2CKE%2CKG%2CKH%2CKI%2CKN%2CKR%2CKW%2CLA%2CLB%2CLR%2CLY%2CLC%2CLI%2CLK%2CLS%2CLT%2CLU%2CLV%2CMO%2CMF%2CMA%2CMC%2CMD%2CMG%2CMV%2CMH%2CMK%2CML%2CMT%2CMM%2CME%2CMN%2CMP%2CMZ%2CMR%2CMS%2CMQ%2CMU%2CMW%2CMY%2CYT%2CNA%2CNC%2CNE%2CNF%2CNG%2CNI%2CNU%2CNL%2CNO%2CNP%2CNR%2CNZ%2COM%2CPK%2CPA%2CPN%2CPE%2CPW%2CPG%2CPL%2CPR%2CKP%2CPT%2CPY%2CPS%2CPF%2CQA%2CRE%2CRO%2CRU%2CRW%2CSA%2CSD%2CSN%2CSG%2CGS%2CSH%2CSJ%2CSB%2CSL%2CSV%2CSM%2CSO%2CPM%2CRS%2CSS%2CST%2CSR%2CSK%2CSI%2CSE%2CSZ%2CSX%2CSC%2CSY%2CTC%2CTD%2CTG%2CTH%2CTJ%2CTK%2CTM%2CTL%2CTO%2CTT%2CTN%2CTR%2CTV%2CTZ%2CUG%2CUA%2CUM%2CUY%2CUZ%2CVA%2CVC%2CVE%2CVG%2CVI%2CVN%2CVU%2CWF%2CWS%2CYE%2CZA%2CZM%2CZW%22%2C%22i%22%3A%225860bf16-aac5-48c5-b1fe-608a994a8262%22%7D%5D82 KB—✓3rd
https://www.tuv.com/system-media-files/js/pti_booking-min.js0 KB—✓3rd
https://www.tuv.com/system-media-files/js/google-requirements/sha256_encoder.js0 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

D
Page Weight Inventory
Action
67 resources · 7.3 MB · 349 KB savings available
FIX
67 resources · 7.3 MB · 349 KB savings available
Warning::
Page weight 6.3 MB over 1MB target
Got: 7.3 MB Expected: ≤ 1 MB
Info::
~349 KB of savings available
Warning::
66 third-party resources (100% of weight)
Info::
6 resources over 200KB
67 resources · 7.3 MiB · 66 third-party 6.3 MiB over 1MB target
Image 84% · 6.2 MiB
JavaScript 8% · 623.6 KiB
Font 3% · 250.3 KiB
Document 2% · 181.3 KiB
CSS 2% · 122.0 KiB
Other 0% · 1.5 KiB

~349.1 KiB of savings available

Remove unused JavaScript: 349.1 KiB
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.

B
Image Optimization
37 images, 0 KB saveable
REVIEW
37 images, 0 KB saveable
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
37 images 6.2 MB
0 oversized -0 KB
35 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
7 fonts (250 KB)
PASS
7 fonts (250 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

250 KB total

Render-blocking

0

of 7

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 FCP 4.2 s LCP 18.0 shttps://www.tuv.com/system-media-files/fonts/c5f91eda_7bd6_4dda_920e_a8aca7f11884.woff2c5f91eda_7bd6_4dda_920e... https://www.tuv.com/system-media-files/fonts/c5f91eda_7bd6_4dda_920e_a8aca7f11884.woff2 — 23.0 KiB — 37 ms — font-display: swaphttps://www.tuv.com/system-media-files/fonts/font-awesome/fontawesome-webfont.woff2fontawesome-webfont.woff2 https://www.tuv.com/system-media-files/fonts/font-awesome/fontawesome-webfont.woff2 — 75.7 KiB — 44 ms — font-display: swaphttps://www.tuv.com/system-media-files/fonts/roboto-v19-latin-italic.woff2roboto-v19-latin-italic... https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-italic.woff2 — 17.3 KiB — 40 ms — font-display: swaphttps://www.tuv.com/system-media-files/fonts/roboto-v19-latin-regular.woff2roboto-v19-latin-regula... https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-regular.woff2 — 15.7 KiB — 42 ms — font-display: swaphttps://www.tuv.com/system-media-files/fonts/univers-lt/univers-lt-roman.woff2univers-lt-roman.woff2 https://www.tuv.com/system-media-files/fonts/univers-lt/univers-lt-roman.woff2 — 27.2 KiB — 15 ms — font-display: swaphttps://www.tuv.com/system-media-files/fonts/font-awesome/fontawesome-webfont.woff2?v=4.7.0fontawesome-webfont.woff2 https://www.tuv.com/system-media-files/fonts/font-awesome/fontawesome-webfont.woff2?v=4.7.0 — 75.7 KiB — 13 ms — font-display: swaphttps://www.tuv.com/system-media-files/fonts/roboto-v19-latin-700.woff2roboto-v19-latin-700.woff2 https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-700.woff2 — 15.8 KiB — 15 ms — font-display: swap
c5f91eda_7bd6_4dda_920e... woff2 swap
Size 23 KB
Load time 37 ms
Start 553 ms
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 44 ms
Start 554 ms
Risk FOUT — text flashes from fallback to web font
roboto-v19-latin-italic... woff2 swap
Size 17 KB
Load time 40 ms
Start 554 ms
Risk FOUT — text flashes from fallback to web font
roboto-v19-latin-regula... woff2 swap
Size 16 KB
Load time 42 ms
Start 554 ms
Risk FOUT — text flashes from fallback to web font
univers-lt-roman.woff2 woff2 swap
Size 27 KB
Load time 15 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 13 ms
Start 2.0 s
Risk FOUT — text flashes from fallback to web font
roboto-v19-latin-700.woff2 woff2 swap
Size 16 KB
Load time 15 ms
Start 2.0 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
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
—
preload
4
dns-prefetch
—
prefetch
—

4 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
67 requests over 4075ms
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 FCP 4.2 s LCP 18.0 shttps://tuv.com// https://tuv.com/ — 302 — 91 B — 502 ms — h2https://www.tuv.com/www.tuv.com/ https://www.tuv.com/ — 301 — 94 B — 18 ms — h2https://www.tuv.com/greater-china/tw/www.tuv.com/greater-china/tw/ https://www.tuv.com/greater-china/tw/ — 301 — 296 B — 5 ms — h2https://www.tuv.com/taiwan/tw/www.tuv.com/taiwan/tw/ https://www.tuv.com/taiwan/tw/ — 200 — 40.7 KiB — 8 ms — h2https://consent.cookiebot.eu/uc.jsconsent.cookiebot.eu/uc.js https://consent.cookiebot.eu/uc.js — 200 — 30.3 KiB — 975 ms — h2https://www.tuv.com/system-media-files/fonts/c5f91eda_7bd6_4dda_920e_a8aca7f11884.woff2www.tuv.com/system-media-files/font... https://www.tuv.com/system-media-files/fonts/c5f91eda_7bd6_4dda_920e_a8aca7f11884.woff2 — 200 — 23.0 KiB — 37 ms — h2https://www.tuv.com/system-media-files/fonts/font-awesome/fontawesome-webfont.woff2www.tuv.com/system-media-files/font... https://www.tuv.com/system-media-files/fonts/font-awesome/fontawesome-webfont.woff2 — 200 — 75.7 KiB — 44 ms — h2https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-italic.woff2www.tuv.com/system-media-files/font... https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-italic.woff2 — 200 — 17.3 KiB — 40 ms — h2https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-regular.woff2www.tuv.com/system-media-files/font... https://www.tuv.com/system-media-files/fonts/roboto-v19-latin-regular.woff2 — 200 — 15.7 KiB — 42 ms — h2https://www.tuv.com/system-media-files/css/style.css?20220919www.tuv.com/system-media-files/css/... https://www.tuv.com/system-media-files/css/style.css?20220919 — 200 — 112.1 KiB — 34 ms — h2https://www.tuv.com/system-media-files/css/additional_cn_style.css?20200227www.tuv.com/system-media-files/css/... https://www.tuv.com/system-media-files/css/additional_cn_style.css?20200227 — 403 — 116 B — 10 ms — h2https://www.tuv.com/system-media-files/css/flags-2.csswww.tuv.com/system-media-files/css/... https://www.tuv.com/system-media-files/css/flags-2.css — 200 — 1.3 KiB — 26 ms — h2https://www.tuv.com/system-media-files/css/font-awesome/fontawesome.min.csswww.tuv.com/system-media-files/css/... https://www.tuv.com/system-media-files/css/font-awesome/fontawesome.min.css — 200 — 7.3 KiB — 28 ms — h2https://www.tuv.com/system-media-files/css/pti_booking.csswww.tuv.com/system-media-files/css/... https://www.tuv.com/system-media-files/css/pti_booking.css — 200 — 1.3 KiB — 31 ms — h2https://www.tuv.com/content-media-files/master-content/services/mobility/1042-tuv-rheinland-functional-safety-of-automotive-components/tuv-rheinland-functional-safety-of-automotive-components-de_core_1_5_1.jpgwww.tuv.com/content-media-files/mas... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 5793ms · 661KB · €63/mo
www.tuv.com
Other
Costly
Execution 1853ms
Transfer 508 KB
Unused 69%
Monthly Cost €20/mo
consent.cookiebot.eu
Other
Costly
Execution 1186ms
Transfer 82 KB
Monthly Cost €13/mo
consent.cookiebot.eu
Other
Costly
Execution 1164ms
Transfer 30 KB
Monthly Cost €13/mo
www.tuv.com
Other
Costly
Execution 917ms
Transfer 41 KB
Monthly Cost €10/mo
Unattributable
Other
Costly
Execution 673ms
Transfer 0 KB
Monthly Cost €7/mo

These scripts may cost more than they're worth

  • www.tuv.com adds 1853ms and costs ~€20/month
  • consent.cookiebot.eu adds 1186ms and costs ~€13/month
  • consent.cookiebot.eu adds 1164ms and costs ~€13/month
  • www.tuv.com adds 917ms and costs ~€10/month
  • Unattributable adds 673ms and costs ~€7/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.tuv.com takes 1853ms 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.tuv.com'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

consent.cookiebot.eu takes 1186ms 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

consent.cookiebot.eu takes 1164ms 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.tuv.com takes 917ms 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 673ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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