Performance
· 20 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.
291 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
353 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.014
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
351 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
353 ms
Page Load Progression
BPage Weight Budget1.4 MB transferred, 29 requestsREVIEW
BImage Optimization13 images, 0 KB saveableREVIEW
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction29 resources · 1.4 MB · 0 KB savings availableREVIEW
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 29 resources | 1.4 MiB | ||||||
A+Third-Party ImpactNo third-party resourcesPASS
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost170ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://beavercheck.com/ | 90ms | 6ms | 0ms | 1st |
| Unattributable | 80ms | 1ms | 0ms | 3rd |
A+Font Loading4 fonts (95 KB)PASS
Web fonts
4
95 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+JS Bundles6 scripts, 0 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://beavercheck.com/static/js/htmx.min.js?v=97742f3 | 19 KB | — | ✓ | 1st |
| https://beavercheck.com/static/js/htmx-config.js?v=97742f3 | 0 KB | — | ✓ | 1st |
| https://beavercheck.com/static/js/components.js?v=97742f3 | 6 KB | — | ✓ | 1st |
| https://beavercheck.com/static/js/alpine.min.js?v=97742f3 | 22 KB | — | ✓ | 1st |
| https://beavercheck.com/static/js/app.js?v=97742f3 | 5 KB | — | ✓ | 1st |
| https://beavercheck.com/static/js/actions.js?v=97742f3 | 3 KB | — | ✓ | 1st |
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=60 (≤ 5min) is appropriatePASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: OVHcloud
AHTTP Cachingmax-age=60 (1 minute)PASS
public, max-age=60
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 60 | Cache for 1 minute |
Network Waterfall29 requests over 316msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 80ms | 0 KB | — | €1/mo | Optional |
47% 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