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.
866 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.00 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.
0.043
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
870 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.
2.00 s
Page Load Progression
DThird-Party ImpactAction97% third-party, 0 ms blockingFIX
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization20 images, 0 KB saveableREVIEW
BJS Bundles30 scripts, 131 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-V9HWNDL45E | 175 KB | 89 KB (51%) | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/9674-fd786247d3cad7ec5fb5.js | 39 KB | 22 KB (57%) | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/3389-76e0fa31a0a626787f58.js | 25 KB | 21 KB (84%) | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/2842-8b3fa291e8f59c0a1016.chunk.js | 1 KB | — | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/8924-111f4ffc0fbcf7a21c09.chunk.js | 2 KB | — | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/application-fa35f85882f0bb5bf1b6.js | 18 KB | — | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/cloudwatch_rum-7419805cd3f46aeb6902.js | 1 KB | — | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/8953-b6ca56ea592136e6cb67.chunk.js | 1 KB | — | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/356-f8692cb33e4d8d52c637.chunk.js | 1 KB | — | ✓ | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/3079-4a6ea3a01164468bff90.chunk.js | 1 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
APage Weight Budget793 KB transferred, 63 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost218ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cookpad.com/es | 77ms | 15ms | 1ms | 1st |
| Unattributable | 74ms | 1ms | 0ms | 3rd |
| https://global-web-assets.cpcdn.com/packs/js/application-fa35f85882f0bb5bf1b6.js | 67ms | 53ms | 2ms | 3rd |
A+Font Loading3 fonts (36 KB)PASS
Web fonts
3
36 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
APage Weight Inventory63 resources · 793 KB · 131 KB savings availablePASS
~131.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 63 resources | 792.8 KiB | ||||||
Network Waterfall63 requests over 1101msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 74ms | 0 KB | — | €1/mo | Optional |
global-web-assets.cpcdn.com global-web-assets.cpcdn.com | Other | 67ms | 18 KB | — | €1/mo | Optional |
65% 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