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.
1.02 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.70 s
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.
0.008
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.89 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.
1.70 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS BundlesAction66 scripts, 577 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://workers.cloudflare.com/_astro/_icon.B3faMrhj.js | 190 KB | 179 KB (94%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/registry.CI6CKhvu.js | 149 KB | 147 KB (99%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/paper-full.BYcUELjp.js | 119 KB | 83 KB (70%) | ✓ | 3rd |
| https://ot.www.cloudflare.com/ot/scripttemplates/202503.1.0/otBannerSdk.js | 110 KB | 66 KB (60%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/index.D5GVa2p2.js | 57 KB | 34 KB (60%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/common.0FHQb7_N.js | 25 KB | 24 KB (97%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/proxy.CVQLZZWt.js | 39 KB | 23 KB (60%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/client.CaeA_d_Z.js | 56 KB | 21 KB (38%) | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/index.RToQXzXG.js | 2 KB | — | ✓ | 3rd |
| https://workers.cloudflare.com/_astro/_keyframe.NQCmYj5Y.js | 3 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
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
FPage Weight InventoryAction98 resources · 1.6 MB · 577 KB savings availableFIX
~577.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 98 resources | 1.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.6 MB transferred, 98 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
CImage OptimizationAction13 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
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
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
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
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
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
CJS Execution CostAction1346ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://workers.cloudflare.com/ | 481ms | 37ms | 3ms | 3rd |
| https://workers.cloudflare.com/_astro/index.Cf_3gg3D.js | 332ms | 53ms | 0ms | 3rd |
| https://workers.cloudflare.com/_astro/client.CaeA_d_Z.js | 225ms | 140ms | 0ms | 3rd |
| Unattributable | 222ms | 37ms | 0ms | 3rd |
| https://workers.cloudflare.com/_astro/paper-full.BYcUELjp.js | 85ms | 32ms | 0ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (67 KB)PASS
Web fonts
3
67 KB total
Render-blocking
0
of 3
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 HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall98 requests over 3708msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
workers.cloudflare.com workers.cloudflare.com | Other | 481ms | 268 KB | — | €5/mo | Costly |
workers.cloudflare.com workers.cloudflare.com | Other | 332ms | 27 KB | — | €4/mo | Costly |
workers.cloudflare.com workers.cloudflare.com | Other | 225ms | 56 KB | 38% | €2/mo | Costly |
Unattributable Unattributable | Other | 222ms | 0 KB | — | €2/mo | Costly |
workers.cloudflare.com workers.cloudflare.com | Other | 85ms | 119 KB | 70% | €1/mo | Optional |
These scripts may cost more than they're worth
- workers.cloudflare.com adds 481ms and costs ~€5/month
- workers.cloudflare.com adds 332ms and costs ~€4/month
- workers.cloudflare.com adds 225ms and costs ~€2/month
- Unattributable adds 222ms and costs ~€2/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
workers.cloudflare.com takes 481ms 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
workers.cloudflare.com takes 332ms 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
workers.cloudflare.com takes 225ms 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
Unattributable takes 222ms 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
70% of workers.cloudflare.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