Performance
· 27 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.
4.03 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.92 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
683 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.
6.00 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.
8.92 s
Page Load Progression
DThird-Party ImpactAction93% third-party, 0 ms blockingFIX
DJS Execution CostAction3207ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://seowebchecker.com/ai-website-tester | 1285ms | 39ms | 3ms | 1st |
| Unattributable | 344ms | 8ms | 0ms | 1st |
| https://fundingchoicesmessages.google.com/f/AGSKWxVU4JEfb7JvG1TIPU-HCbiw9wm6QIi5lTm-8JYbJuS9w-kXLifNXnkPxD9qKe5KWm5yTMYwq7GTHtWHu--d6gUDmHw4Vor0S4CmPrZyJ7dXIDuCu2Q6dO2ZgD7J9IDQqoxaiGJngw==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzk0MjUwODA1LDkwNzAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly9zZW93ZWJjaGVja2VyLmNvbS9haS13ZWJzaXRlLXRlc3RlciIsbnVsbCxbWzgsIm1YQ1dvd3N0QkNFIl0sWzksImVuLVVTIl0sWzE4LCJbW1tudWxsLDgzNSxudWxsLDFdXV0iXSxbMzUsIjE3OTQyNTA4MDUiXSxbMjYsIjQiXSxbMzMsIjE0Il0sWzE5LCIxIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyNSwiW1s5NTM5ODgxN11dIl0sWzI5LCJmYWxzZSJdXV0 | 323ms | 147ms | 49ms | 3rd |
| https://seowebchecker.com/cdn-cgi/challenge-platform/scripts/jsd/main.js?ray=a57f0eea58c26af3 | 251ms | 230ms | 4ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-96YN5SEMCD&cx=c>m=4e6b50 | 244ms | 197ms | 45ms | 3rd |
| https://fundingchoicesmessages.google.com/i/ca-pub-6869302511765147?href=https%3A%2F%2Fseowebchecker.com%2Fai-website-tester&ers=2 | 215ms | 189ms | 23ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-142294912-2 | 171ms | 122ms | 37ms | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202611030101/show_ads_impl_fy2021.js | 153ms | 103ms | 48ms | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 149ms | 102ms | 16ms | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js | 72ms | 35ms | 36ms | 3rd |
DJS BundlesAction12 scripts, 487 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202611030101/show_ads_impl_fy2021.js | 168 KB | 136 KB (81%) | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js | 94 KB | 77 KB (83%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-96YN5SEMCD&cx=c>m=4e6b50 | 162 KB | 72 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-142294912-2 | 133 KB | 71 KB (54%) | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/Chart.js/4.4.1/chart.umd.min.js | 59 KB | 52 KB (89%) | ✓ | 3rd |
| https://fundingchoicesmessages.google.com/i/ca-pub-6869302511765147?href=https%3A%2F%2Fseowebchecker.com%2Fai-website-tester&ers=2 | 71 KB | 37 KB (52%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 56 KB | 21 KB (38%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 0 KB | 21 KB (38%) | ✓ | 3rd |
| https://seowebchecker.com/js/website-test-ai.js | 13 KB | — | ✗ | 1st |
| https://seowebchecker.com/privacy-gate.js | 5 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
DAsset CompressionAction2 of 2 asset hosts serve text uncompressedFIX
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BPage Weight Inventory28 resources · 1002 KB · 487 KB savings availableREVIEW
~487.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 28 resources | 1002.4 KiB | ||||||
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
APage Weight Budget1002 KB transferred, 28 requestsPASS
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
A+Text CompressionAll text resources are compressedPASS
A+Image OptimizationNo images on this pagePASS
A+Font Loading2 fonts (113 KB)PASS
Web fonts
2
113 KB total
Render-blocking
0
of 2
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 Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Document CompressionDocument response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall28 requests over 1900msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 323ms | 71 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 244ms | 162 KB | 44% | €3/mo | Costly |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 215ms | 71 KB | 52% | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 171ms | 133 KB | 54% | €2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 153ms | 168 KB | 81% | €2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 149ms | 0 KB | 38% | €2/mo | Optional |
cdnjs cdnjs.cloudflare.com | CDN | 72ms | 94 KB | 83% | €1/mo | Optional |
These scripts may cost more than they're worth
- fundingchoicesmessages.google.com adds 323ms and costs ~€4/month
- Google Tag Manager adds 244ms and costs ~€3/month
- fundingchoicesmessages.google.com adds 215ms and costs ~€2/month
41% 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
fundingchoicesmessages.google.com takes 323ms 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 244ms 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
fundingchoicesmessages.google.com takes 215ms 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
52% of fundingchoicesmessages.google.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
54% 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
81% of pagead2.googlesyndication.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
83% of cdnjs'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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-11 — 2026-11-07)
LCP (p75)
2449 ms
76% good
INP (p75)
177 ms
79% good
CLS (p75)
0.120
72% good
FCP (p75)
2339 ms
TTFB (p75)
1469 ms