Performance
· 15 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.
922 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
922 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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
922 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.
922 ms
Page Load Progression
DThird-Party ImpactAction68% third-party, 0 ms blockingFIX
CImage OptimizationAction5 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
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
BJS Execution Cost611ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://haveibeenpwned.com/ | 404ms | 16ms | 1ms | 1st |
| https://haveibeenpwned.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 155ms | 147ms | 1ms | 1st |
| Unattributable | 52ms | 2ms | 0ms | 3rd |
APage Weight Budget802 KB transferred, 33 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (188 KB)PASS
Web fonts
4
188 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~66 KB and ~132 ms
A+JS Bundles8 scripts, 43 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://haveibeenpwned.com/js/bundle/bundle.js?v=nL90QLKp3rCXsTdDu7LzLrnK1LtZvo5P_j3010TrQE4 | 56 KB | 43 KB (78%) | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 | 11 KB | — | ✓ | 3rd |
| https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js | 17 KB | — | ✓ | 3rd |
| https://haveibeenpwned.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? | 12 KB | — | ✓ | 1st |
| blob:https://challenges.cloudflare.com/42f853e5-39e6-4ff8-8331-e07d2b96f893 | 0 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/29f79f53-d170-4931-a9d5-5a0bd642d33f | -0 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/29f79f53-d170-4931-a9d5-5a0bd642d33f | -0 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/dbe76d14-bd6f-4217-b0ea-c8a4a8172248 | 0 KB | — | ✓ | 3rd |
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
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
APage Weight Inventory33 resources · 802 KB · 43 KB savings availablePASS
~43.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 33 resources | 802.4 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
A+HTTP Cachingmax-age=3600 (1 hour)PASS
public,max-age=3600
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 3600 | Cache for 1 hour |
Network Waterfall33 requests over 3095msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 52ms | 0 KB | — | €1/mo | Optional |