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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
6
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
67
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.

1.63 s

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

2.84 s

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

198 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.

2.72 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.

3.00 s

Page Load Progression

479 ms
958 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.4 s
3.8 s
Checks
15
5 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
7.6 MB transferred, 67 requests
FIX
7.6 MB transferred, 67 requests
Critical::
Page weighs 10.6 MB (7.6 MB transferred)
Warning::
Images are 6.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 6.5 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 1.6 g CO2 per page load
7.6 MB / 2.4 MB budget
7.6 MB transferred
67 requests
1.6 g CO2 per page load
Images 6.5 MiB 85%
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 (7.6 MiB of 7.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2014ms total JS execution
FIX
2014ms total JS execution
Warning::
https://www.tuv.com/system-media-files/js/scripts....: 881ms CPU time
Warning::
https://consent.cookiebot.eu/uc.js: 435ms CPU time
Warning::
https://consent.cookiebot.eu/93626a84-94d4-4a5f-8a...: 300ms CPU time
Info::
https://www.tuv.com/taiwan/tw/: 233ms CPU time
Info::
Unattributable: 165ms CPU time
Warning::
Third-party scripts: 2014ms (100% of total)

Main Thread Breakdown

Script Evaluation 35% Style & Layout 33% Other 13% Parse HTML & CSS 11% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://www.tuv.com/system-media-files/js/scripts.js881ms348ms89ms3rd
https://consent.cookiebot.eu/uc.js435ms258ms5ms3rd
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%5D300ms98ms13ms3rd
https://www.tuv.com/taiwan/tw/233ms4ms2ms3rd
Unattributable165ms3ms0ms3rd
D
JS Bundles
Action
9 scripts, 350 KB unused
FIX
9 scripts, 350 KB unused
Warning::
https://www.tuv.com/system-media-files/js/scripts....: 350 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 350 KB
350 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.tuv.com/system-media-files/js/scripts.js508 KB350 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 · 7.6 MB · 350 KB savings available
FIX
67 resources · 7.6 MB · 350 KB savings available
Warning::
Page weight 6.6 MB over 1MB target
Got: 7.6 MB Expected: ≤ 1 MB
Info::
~350 KB of savings available
Warning::
66 third-party resources (100% of weight)
Info::
7 resources over 200KB
67 resources · 7.6 MiB · 66 third-party 6.6 MiB over 1MB target
Image 85% · 6.5 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

~349.8 KiB of savings available

Remove unused JavaScript: 349.8 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
36 images, 0 KB saveable
REVIEW
36 images, 0 KB saveable
Warning::
https://www.tuv.com/content-media-files/master-con... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
36 images 6.5 MB
0 oversized -0 KB
35 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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

Source: web.dev / Core Web Vitals

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 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.6 s LCP 2.8 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 — 34 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 — 42 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 — 38 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 — 40 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 — 38 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 — 43 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 — 11 ms — font-display: swap
c5f91eda_7bd6_4dda_920e... woff2 swap
Size 23 KB
Load time 34 ms
Start 846 ms
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 42 ms
Start 846 ms
Risk FOUT — text flashes from fallback to web font
roboto-v19-latin-italic... woff2 swap
Size 17 KB
Load time 38 ms
Start 847 ms
Risk FOUT — text flashes from fallback to web font
roboto-v19-latin-regula... woff2 swap
Size 16 KB
Load time 40 ms
Start 847 ms
Risk FOUT — text flashes from fallback to web font
univers-lt-roman.woff2 woff2 swap
Size 27 KB
Load time 38 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 43 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
roboto-v19-latin-700.woff2 woff2 swap
Size 16 KB
Load time 11 ms
Start 1.3 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
67 requests over 3634ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.6 s LCP 2.8 shttps://tuv.com// https://tuv.com/ — 302 — 91 B — 800 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 — 6 ms — h2https://www.tuv.com/taiwan/tw/www.tuv.com/taiwan/tw/ https://www.tuv.com/taiwan/tw/ — 200 — 40.7 KiB — 10 ms — h2https://consent.cookiebot.eu/uc.jsconsent.cookiebot.eu/uc.js https://consent.cookiebot.eu/uc.js — 200 — 30.3 KiB — 168 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 — 34 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 — 42 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 — 38 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 — 40 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 — 35 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 — 27 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 — 27 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 — 30 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... https://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.jpg — 200 — 111.3 KiB — 46 ms — 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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 2014ms · 661KB · €22/mo
www.tuv.com
Other
Costly
Execution 881ms
Transfer 508 KB
Unused 69%
Monthly Cost €10/mo
consent.cookiebot.eu
Other
Costly
Execution 435ms
Transfer 30 KB
Monthly Cost €5/mo
consent.cookiebot.eu
Other
Costly
Execution 300ms
Transfer 82 KB
Monthly Cost €3/mo
www.tuv.com
Other
Costly
Execution 233ms
Transfer 41 KB
Monthly Cost €3/mo
Unattributable
Other
Optional
Execution 165ms
Transfer 0 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • www.tuv.com adds 881ms and costs ~€10/month
  • consent.cookiebot.eu adds 435ms and costs ~€5/month
  • consent.cookiebot.eu adds 300ms and costs ~€3/month
  • www.tuv.com adds 233ms and costs ~€3/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.

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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 881ms 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 435ms 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 300ms 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 233ms 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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