Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.33 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.86 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.65 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.
9.46 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.
25.19 s
Page Load Progression
FPage Weight BudgetAction3.7 MB transferred, 87 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction6918ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 1135ms | 1002ms | 99ms | 3rd |
| https://www.webnode.com/ | 932ms | 26ms | 9ms | 3rd |
| Unattributable | 847ms | 31ms | 0ms | 3rd |
| https://motu.teamblue.services/js/he-man_all.min.js?v=2.1.73&ma=ma_enabled | 765ms | 462ms | 31ms | 3rd |
| https://eu.acsbapp.com/apps/app/dist/js/app.js | 641ms | 391ms | 111ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KN6424 | 517ms | 429ms | 81ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KB311973TV&cx=c>m=4e64h1 | 451ms | 296ms | 43ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-465935583&cx=c>m=4e64h1 | 397ms | 349ms | 46ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-96CQKT7YG3&cx=c>m=4e64h1 | 337ms | 286ms | 48ms | 3rd |
| https://d1rv23qj5kas56.cloudfront.net/obfs/js/wndCommon.bundle.e66bb7b8e6d82621.js | 284ms | 222ms | 17ms | 3rd |
Showing top 10 of 15 scripts
FJS BundlesAction20 scripts, 1.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://eu.acsbapp.com/apps/app/dist/js/app.js | 222 KB | 114 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KB311973TV&cx=c>m=4e64h1 | 157 KB | 66 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-465935583&cx=c>m=4e64h1 | 144 KB | 65 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-96CQKT7YG3&cx=c>m=4e64h1 | 157 KB | 64 KB (41%) | ✓ | 3rd |
| https://d1rv23qj5kas56.cloudfront.net/obfs/js/common.bundle.a394c1755c4c4f7e.js | 108 KB | 62 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KN6424 | 205 KB | 54 KB (27%) | ✓ | 3rd |
| https://d1rv23qj5kas56.cloudfront.net/obfs/js/layout.bundle.d653bfc7fe14b19e.js | 75 KB | 54 KB (72%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction87 resources · 3.7 MB · 1.1 MB savings availableFIX
~1.1 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 87 resources | 3.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization43 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (189 KB)PASS
Web fonts
4
189 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints9 hints, 0 missing preconnectsPASS
Current Resource Hints
9 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall87 requests over 4950msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gstatic.com www.gstatic.com | Other | 1135ms | 0 KB | 49% | €12/mo | Costly |
www.webnode.com www.webnode.com | Other | 932ms | 25 KB | — | €10/mo | Costly |
Unattributable Unattributable | Other | 847ms | 0 KB | — | €9/mo | Costly |
motu.teamblue.services motu.teamblue.services | Other | 765ms | 94 KB | 36% | €8/mo | Costly |
eu.acsbapp.com eu.acsbapp.com | Other | 641ms | 222 KB | 53% | €7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 517ms | 205 KB | 27% | €6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 451ms | 157 KB | 42% | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 397ms | 144 KB | 45% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 337ms | 157 KB | 41% | €4/mo | Costly |
d1rv23qj5kas56.cloudfront.net d1rv23qj5kas56.cloudfront.net | Other | 284ms | 43 KB | 63% | €3/mo | Costly |
d1rv23qj5kas56.cloudfront.net d1rv23qj5kas56.cloudfront.net | Other | 241ms | 75 KB | 72% | €3/mo | Costly |
d1rv23qj5kas56.cloudfront.net d1rv23qj5kas56.cloudfront.net | Other | 120ms | 125 KB | — | €1/mo | Optional |
c.seznam.cz c.seznam.cz | Other | 112ms | 47 KB | 59% | €1/mo | Optional |
d1rv23qj5kas56.cloudfront.net d1rv23qj5kas56.cloudfront.net | Other | 91ms | 36 KB | 57% | €1/mo | Optional |
d1rv23qj5kas56.cloudfront.net d1rv23qj5kas56.cloudfront.net | Other | 50ms | 108 KB | 58% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.gstatic.com adds 1135ms and costs ~€12/month
- www.webnode.com adds 932ms and costs ~€10/month
- Unattributable adds 847ms and costs ~€9/month
- motu.teamblue.services adds 765ms and costs ~€8/month
- eu.acsbapp.com adds 641ms and costs ~€7/month
- Google Tag Manager adds 517ms and costs ~€6/month
- Google Tag Manager adds 451ms and costs ~€5/month
- Google Tag Manager adds 397ms and costs ~€4/month
- Google Tag Manager adds 337ms and costs ~€4/month
- d1rv23qj5kas56.cloudfront.net adds 284ms and costs ~€3/month
- d1rv23qj5kas56.cloudfront.net adds 241ms and costs ~€3/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.gstatic.com takes 1135ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.webnode.com takes 932ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 847ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
motu.teamblue.services takes 765ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
eu.acsbapp.com takes 641ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
53% of eu.acsbapp.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 517ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 451ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 397ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 337ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
d1rv23qj5kas56.cloudfront.net takes 284ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
63% of d1rv23qj5kas56.cloudfront.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
d1rv23qj5kas56.cloudfront.net takes 241ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
72% of d1rv23qj5kas56.cloudfront.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
59% of c.seznam.cz's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
57% of d1rv23qj5kas56.cloudfront.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
58% of d1rv23qj5kas56.cloudfront.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev