Performance
· 28 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.
1.40 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.20 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.08 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.011
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.22 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.
13.07 s
Page Load Progression
DThird-Party ImpactAction72% third-party, 0 ms blockingFIX
FJS Execution CostAction4083ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202610270101/show_ads_impl_fy2021.js | 659ms | 455ms | 62ms | 3rd |
| Unattributable | 597ms | 10ms | 0ms | 1st |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-9742784810661665 | 579ms | 487ms | 37ms | 3rd |
| https://rasterbator.org/ | 535ms | 23ms | 42ms | 1st |
| https://rasterbator.org/_next/static/chunks/1255-a8b1d37a31c410a1.js | 458ms | 434ms | 11ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-8QY7SV15KR | 329ms | 270ms | 58ms | 3rd |
| https://scripts.clarity.ms/0.8.77-beta/clarity.js | 292ms | 259ms | 8ms | 3rd |
| https://fundingchoicesmessages.google.com/i/ca-pub-9742784810661665?href=https%3A%2F%2Frasterbator.org&ers=2 | 247ms | 220ms | 22ms | 3rd |
| https://ep2.adtrafficquality.google/sodar/sodar2.js | 108ms | 102ms | 2ms | 3rd |
| https://rasterbator.org/_next/static/chunks/4bd1b696-100b9d70ed4e49c1.js | 80ms | 40ms | 12ms | 1st |
Showing top 10 of 13 scripts
DJS BundlesAction40 scripts, 380 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202610270101/show_ads_impl_fy2021.js | 165 KB | 94 KB (57%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8QY7SV15KR | 178 KB | 73 KB (41%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/lidar.js?fcd=true | 84 KB | 66 KB (79%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202610270101/reactive_library_fy2021.js | 78 KB | 65 KB (83%) | ✓ | 3rd |
| https://fundingchoicesmessages.google.com/i/ca-pub-9742784810661665?href=https%3A%2F%2Frasterbator.org&ers=2 | 71 KB | 36 KB (52%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-9742784810661665 | 56 KB | 24 KB (43%) | ✓ | 3rd |
| https://rasterbator.org/_next/static/chunks/710-b598fdc781a02b62.js | 34 KB | 22 KB (68%) | ✓ | 1st |
| https://rasterbator.org/_next/static/chunks/9016-b90b400ef0d92c45.js | 10 KB | — | ✓ | 1st |
| https://tpc.googlesyndication.com/pagead/js/r20261029/r20110914/client/load_preloaded_resource_fy2021.js | 1 KB | — | ✓ | 3rd |
| https://rasterbator.org/_next/static/chunks/207-5bc59c6703a74a76.js | 4 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 InventoryAction106 resources · 1.4 MB · 380 KB savings availableFIX
~380.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 106 resources | 1.4 MiB | ||||||
BPage Weight Budget1.4 MB transferred, 106 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
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
BImage Optimization17 images, 0 KB saveableREVIEW
BAsset Compression1 of 1 asset host serve text uncompressedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
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 |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (39 KB)PASS
Web fonts
2
39 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
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall106 requests over 3525msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 659ms | 165 KB | 57% | €11/mo | Costly |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 579ms | 56 KB | 43% | €9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 329ms | 178 KB | 41% | €5/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 292ms | 25 KB | — | €5/mo | Costly |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 247ms | 71 KB | 52% | €4/mo | Costly |
ep2.adtrafficquality.google ep2.adtrafficquality.google | Other | 108ms | 8 KB | — | €2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 74ms | 84 KB | 79% | €1/mo | Optional |
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 68ms | 10 KB | — | €1/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 58ms | 78 KB | 83% | €1/mo | Optional |
These scripts may cost more than they're worth
- pagead2.googlesyndication.com adds 659ms and costs ~€11/month
- pagead2.googlesyndication.com adds 579ms and costs ~€9/month
- Google Tag Manager adds 329ms and costs ~€5/month
- Microsoft Clarity adds 292ms and costs ~€5/month
- fundingchoicesmessages.google.com adds 247ms and costs ~€4/month
59% 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
pagead2.googlesyndication.com takes 659ms 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
57% 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
pagead2.googlesyndication.com takes 579ms 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 329ms 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
Microsoft Clarity takes 292ms 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 247ms 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
79% 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 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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-02 — 2026-10-29)
LCP (p75)
1981 ms
83% good
INP (p75)
176 ms
78% good
CLS (p75)
0.070
80% good
FCP (p75)
1520 ms
TTFB (p75)
613 ms
Image Optimization34 images, 234 KB total, 81 KB wastedINFO
Image Optimization Audit
Total Images
34
Total Size
234 KB
Oversized
8
Wasted
81 KB