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https://www.crowdin.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
24
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
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.

5.11 s

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

5.43 s

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

1.95 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.308

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.11 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.

20.23 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
16
7 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
3.5 MB transferred, 138 requests
FIX
3.5 MB transferred, 138 requests
Warning::
Page weighs 9.7 MB (3.5 MB transferred)
Warning::
JavaScript is 2.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.3 MB
Warning::
138 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.73 g CO2 per page load
3.5 MB / 2.4 MB budget
3.5 MB transferred
138 requests
0.73 g CO2 per page load
JavaScript 2.3 MiB 65%
Images 775.1 KiB 22%
HTML 263.2 KiB 7%
Fonts 111.0 KiB 3%
Other 41.8 KiB 1%
CSS 38.4 KiB 1%
Other 2.7 KiB 0%
Other 757 B 0%
Other 660 B 0%
Other 260 B 0%
0 2.4 MB 4.9 MB
Over budget

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

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 (3.5 MiB of 3.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
8972ms total JS execution
FIX
8972ms total JS execution
Warning::
https://crowdin.com/: 3009ms CPU time
Warning::
https://d2gma3rgtloi6d.cloudfront.net/astro-websit...: 1320ms CPU time
Warning::
Unattributable: 1232ms CPU time
Warning::
https://b1cb57fb136a.3535c7cd.us-east-1.token.awsw...: 1202ms CPU time
Warning::
https://cdn-cookieyes.com/client_data/2dabfbbec8b7...: 555ms CPU time
Warning::
Third-party scripts: 8972ms (100% of total)

Main Thread Breakdown

Script Evaluation 40% Other 29% Style & Layout 15% Rendering 8% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://crowdin.com/3009ms62ms8ms3rd
https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/client.BgplVUld.js1320ms767ms7ms3rd
Unattributable1232ms128ms0ms3rd
https://b1cb57fb136a.3535c7cd.us-east-1.token.awswaf.com/b1cb57fb136a/challenge.js1202ms1043ms115ms3rd
https://cdn-cookieyes.com/client_data/2dabfbbec8b71e267115f6a5/banner.js555ms388ms2ms3rd
https://gtm-sst.crowdin.com/gtm.js?id=GTM-MW5LV72407ms317ms51ms3rd
https://gtm-sst.crowdin.com/gtag/js?id=G-SRNRQ29Q3E&cx=c&gtm=4e6460&sign=7210a9191e8fa6f16c7eb779bfca1f787382e354920467921d2a4de277231f35_20260407377ms300ms72ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W87XVT8312ms195ms46ms3rd
https://cdn-cookieyes.com/client_data/2dabfbbec8b71e267115f6a5/script.js255ms239ms2ms3rd
https://hog.crowdin.com/static/array.js244ms213ms17ms3rd

Showing top 10 of 11 scripts

F
JS Bundles
Action
85 scripts, 561 KB unused
FIX
85 scripts, 561 KB unused
Warning::
https://b1cb57fb136a.3535c7cd.us-east-1.token.awsw...: 297 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://gtm-sst.crowdin.com/gtm.js?id=GTM-MW5LV72: 65 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-W87...: 62 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://gtm-sst.crowdin.com/gtag/js?id=G-SRNRQ29Q3...: 59 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://d2gma3rgtloi6d.cloudfront.net/astro-websit...: 28 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 561 KB
561 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://b1cb57fb136a.3535c7cd.us-east-1.token.awswaf.com/b1cb57fb136a/challenge.js574 KB297 KB (52%)✓3rd
https://gtm-sst.crowdin.com/gtm.js?id=GTM-MW5LV72156 KB65 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W87XVT8123 KB62 KB (50%)✓3rd
https://gtm-sst.crowdin.com/gtag/js?id=G-SRNRQ29Q3E&cx=c&gtm=4e6460&sign=7210a9191e8fa6f16c7eb779bfca1f787382e354920467921d2a4de277231f35_20260407173 KB59 KB (34%)✓3rd
https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/proxy.BPgS-yi0.js38 KB28 KB (76%)✓3rd
https://hog.crowdin.com/static/array.js51 KB26 KB (52%)✓3rd
https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/client.BgplVUld.js57 KB23 KB (41%)✓3rd
https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/index.B04Pf2oS.js2 KB—✓3rd
https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/book-open.DatndKFv.js1 KB—✓3rd
https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/SiteHeader.DyQz_k4k.js6 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
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
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://d2gma3rgtloi6d.cloudfront.net/astro-websit... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 775 KB
0 oversized -0 KB
13 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
4 fonts (111 KB)
PASS
4 fonts (111 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

111 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 5.1 s LCP 5.4 shttps://fonts.gstatic.com/s/notosans/v42/o-0bIpQlx3QUlC5A4PNB6Ryti20_6n1iPHjc5a7du3mhPy0.woff2o-0bIpQlx3QUlC5A4PNB6Ry... https://fonts.gstatic.com/s/notosans/v42/o-0bIpQlx3QUlC5A4PNB6Ryti20_6n1iPHjc5a7du3mhPy0.woff2 — 35.0 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/manrope/v20/xn7gYHE41ni1AdIRggexSvfedN4.woff2xn7gYHE41ni1AdIRggexSvf... https://fonts.gstatic.com/s/manrope/v20/xn7gYHE41ni1AdIRggexSvfedN4.woff2 — 24.0 KiB — 0 ms — font-display: swaphttps://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/noto-sans-latin-400-normal.BTkUljjl.woff2noto-sans-latin-400-nor... https://d2gma3rgtloi6d.cloudfront.net/astro-website/_astro/noto-sans-latin-400-normal.BTkUljjl.woff2 — 13.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/notosans/v42/o-0ZIpQlx3QUlC5A4PNr4C5OaxRsfNNlKbCePevtuXOmHS91iw.woff2o-0ZIpQlx3QUlC5A4PNr4C5... https://fonts.gstatic.com/s/notosans/v42/o-0ZIpQlx3QUlC5A4PNr4C5OaxRsfNNlKbCePevtuXOmHS91iw.woff2 — 38.7 KiB — 0 ms — font-display: swap
o-0bIpQlx3QUlC5A4PNB6Ry... woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
xn7gYHE41ni1AdIRggexSvf... woff2 swap
Size 24 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-latin-400-nor... woff2 swap
Size 13 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
o-0ZIpQlx3QUlC5A4PNr4C5... woff2 swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
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
20 hints, 0 missing preconnects
PASS
20 hints, 0 missing preconnects
Info::
Page uses 20 resource hint(s)

Current Resource Hints

preconnect
2
preload
+8
18
dns-prefetch
—
prefetch
—

20 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
138 requests over 0ms
INFO

Performance analysis not available for this result.

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 8972ms · 1450KB · €97/mo
crowdin.com
Other
Costly
Execution 3009ms
Transfer 261 KB
Monthly Cost €33/mo
d2gma3rgtloi6d.cloudfront.net
Other
Costly
Execution 1320ms
Transfer 57 KB
Unused 41%
Monthly Cost €14/mo
Unattributable
Other
Costly
Execution 1232ms
Transfer 0 KB
Monthly Cost €13/mo
b1cb57fb136a.3535c7cd.us-east-1.token.awswaf.com
Other
Costly
Execution 1202ms
Transfer 574 KB
Unused 52%
Monthly Cost €13/mo
cdn-cookieyes.com
Other
Costly
Execution 555ms
Transfer 8 KB
Monthly Cost €6/mo
gtm-sst.crowdin.com
Other
Costly
Execution 407ms
Transfer 156 KB
Unused 42%
Monthly Cost €4/mo
gtm-sst.crowdin.com
Other
Costly
Execution 377ms
Transfer 173 KB
Unused 34%
Monthly Cost €4/mo
Google Tag Manager
Tag Manager
Costly
Execution 312ms
Transfer 123 KB
Unused 50%
Monthly Cost €3/mo
cdn-cookieyes.com
Other
Costly
Execution 255ms
Transfer 9 KB
Monthly Cost €3/mo
hog.crowdin.com
Other
Costly
Execution 244ms
Transfer 51 KB
Unused 52%
Monthly Cost €3/mo
d2gma3rgtloi6d.cloudfront.net
Other
Optional
Execution 60ms
Transfer 38 KB
Unused 76%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • crowdin.com adds 3009ms and costs ~€33/month
  • d2gma3rgtloi6d.cloudfront.net adds 1320ms and costs ~€14/month
  • Unattributable adds 1232ms and costs ~€13/month
  • b1cb57fb136a.3535c7cd.us-east-1.token.awswaf.com adds 1202ms and costs ~€13/month
  • cdn-cookieyes.com adds 555ms and costs ~€6/month
  • gtm-sst.crowdin.com adds 407ms and costs ~€4/month
  • gtm-sst.crowdin.com adds 377ms and costs ~€4/month
  • Google Tag Manager adds 312ms and costs ~€3/month
  • cdn-cookieyes.com adds 255ms and costs ~€3/month
  • hog.crowdin.com adds 244ms 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.

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

crowdin.com takes 3009ms 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

d2gma3rgtloi6d.cloudfront.net takes 1320ms 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 1232ms 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

b1cb57fb136a.3535c7cd.us-east-1.token.awswaf.com takes 1202ms 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

52% of b1cb57fb136a.3535c7cd.us-east-1.token.awswaf.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

cdn-cookieyes.com takes 555ms 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

gtm-sst.crowdin.com takes 407ms 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

gtm-sst.crowdin.com takes 377ms 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

Google Tag Manager takes 312ms 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

50% of Google Tag Manager'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

cdn-cookieyes.com takes 255ms 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

hog.crowdin.com takes 244ms 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

52% of hog.crowdin.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

76% of d2gma3rgtloi6d.cloudfront.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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