Performance
· 26 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.
3.86 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.06 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
90 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.004
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.14 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.
6.08 s
Page Load Progression
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization9 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS Execution CostAction1295ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 633ms | 345ms | 0ms | 3rd |
| https://aicshop.anticimex.com/ | 301ms | 95ms | 2ms | 1st |
| https://aicshop.anticimex.com/_nuxt/RazOOpXa.js | 259ms | 178ms | 3ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-NPN2B7G2 | 102ms | 77ms | 22ms | 3rd |
CJS BundlesAction80 scripts, 188 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://aicshop.anticimex.com/_nuxt/RazOOpXa.js | 234 KB | 124 KB (53%) | ✓ | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-NPN2B7G2 | 116 KB | 64 KB (56%) | ✓ | 3rd |
| https://aicshop.anticimex.com/_nuxt/DJ3mNEl3.js | 0 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/fz0PryWe.js | 1 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/D0M7f08U.js | 9 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/UbtjZav2.js | 1 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/DDcNs8xy.js | 1 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/CLHrrWNw.js | 1 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/DhA_ToQb.js | 1 KB | — | ✓ | 1st |
| https://aicshop.anticimex.com/_nuxt/DgDUIzgb.js | 7 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
APage Weight Budget808 KB transferred, 106 requestsPASS
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
AThird-Party Impact23% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints31 hints, 0 missing preconnectsPASS
Current Resource Hints
31 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory106 resources · 808 KB · 188 KB savings availablePASS
~188.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 106 resources | 808.2 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+JavaScript BlockingNo render-blocking JS or document.write usage detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall106 requests over 1643msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 633ms | 0 KB | — | €7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 102ms | 116 KB | 56% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 633ms and costs ~€7/month
57% 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 633ms 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
56% of Google Tag Manager'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
Image Optimization10 images, 7 KB total, 1 KB wastedINFO
Image Optimization Audit
Total Images
10
Total Size
7 KB
Oversized
5
Wasted
1 KB