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.
3.01 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.16 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
704 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.
4.46 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.
11.55 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 sFJS Execution CostAction5313ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://usercentrics.com/ | 2798ms | 117ms | 39ms | 1st |
| Unattributable | 781ms | 89ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-2QB41H1S1Q&cx=c>m=4e64k1h2 | 477ms | 432ms | 38ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K4K37P8 | 362ms | 312ms | 44ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-638WWFBXB6&cx=c>m=4e64k1h2 | 248ms | 206ms | 37ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6L1221E6ET&cx=c>m=4e64k1h2 | 163ms | 128ms | 33ms | 3rd |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/js/lib-dotlottie-player.js?ver=1776838298 | 157ms | 133ms | 1ms | 1st |
| https://web.cmp.usercentrics.eu/ui/v/3.117.0/WebSdk.lib.4c6726a9.js | 111ms | 66ms | 35ms | 3rd |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/js/animate-cards-bottom.js?ver=1776838294 | 89ms | 3ms | 0ms | 1st |
| https://web.cmp.usercentrics.eu/ui/v/3.117.0/UcGdprCmpView.b05dbc41.js | 75ms | 32ms | 6ms | 3rd |
Showing top 10 of 11 scripts
DJS BundlesAction34 scripts, 357 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-K4K37P8 | 171 KB | 71 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6L1221E6ET&cx=c>m=4e64k1h2 | 158 KB | 65 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-2QB41H1S1Q&cx=c>m=4e64k1h2 | 175 KB | 65 KB (37%) | ✓ | 3rd |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/js/lib-dotlottie-player.js?ver=1776838298 | 96 KB | 61 KB (64%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-638WWFBXB6&cx=c>m=4e64k1h2 | 159 KB | 58 KB (37%) | ✓ | 3rd |
| https://web.cmp.usercentrics.eu/ui/v/3.117.0/WebSdk.lib.4c6726a9.js | 56 KB | 35 KB (63%) | ✓ | 3rd |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/components/blocks/testimonial-slider/js/testimonial-slider.js?ver=1776838294 | 2 KB | — | ✓ | 1st |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/components/templates/footer/js/footer.js?ver=1776838294 | 1 KB | — | ✓ | 1st |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/js/animate-cards-bottom.js?ver=1776838294 | 1 KB | — | ✓ | 1st |
| https://usercentrics.com/wp-content/themes/usercentrics/dist/js/wp-plugin-link.js?ver=1776838301 | 1 KB | — | ✓ | 1st |
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
DPage Weight InventoryAction99 resources · 1.5 MB · 357 KB savings availableFIX
~356.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 99 resources | 1.5 MiB | ||||||
BPage Weight Budget1.5 MB transferred, 99 requestsREVIEW
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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
BThird-Party Impact53% third-party, 0 ms blockingREVIEW
BImage Optimization41 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 Loading5 fonts (253 KB)PASS
Web fonts
5
253 KB total
Render-blocking
0
of 5
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 Hints7 hints, 0 missing preconnectsPASS
Current Resource Hints
7 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AHTTP Cachingmax-age=43200 (12 hours)PASS
max-age=43200, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 43200 | Cache for 12 hours |
| must-revalidate | — | Must recheck with server after expiry |
Network Waterfall99 requests over 5492msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 781ms | 0 KB | — | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 477ms | 175 KB | 37% | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 362ms | 171 KB | 42% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 248ms | 159 KB | 37% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 163ms | 158 KB | 41% | €2/mo | Optional |
web.cmp.usercentrics.eu web.cmp.usercentrics.eu | Other | 111ms | 56 KB | 63% | €1/mo | Optional |
web.cmp.usercentrics.eu web.cmp.usercentrics.eu | Other | 75ms | 18 KB | — | €1/mo | Optional |
web.cmp.usercentrics.eu web.cmp.usercentrics.eu | Other | 53ms | 9 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 781ms and costs ~€8/month
- Google Tag Manager adds 477ms and costs ~€5/month
- Google Tag Manager adds 362ms and costs ~€4/month
- Google Tag Manager adds 248ms and costs ~€3/month
43% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Unattributable takes 781ms 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 477ms 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 362ms 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 248ms 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 web.cmp.usercentrics.eu'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