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.
1.37 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.45 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
34 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.21 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.
4.50 s
Page Load Progression
FPage Weight BudgetAction3.4 MB transferred, 316 requestsFIX
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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction187 scripts, 326 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-NC2TW8 | 173 KB | 81 KB (47%) | ✓ | 3rd |
| https://www.ecestaticos.com/static/cache/js/8dc59f7cf8656d67459e40289fe058f0/1/ | 105 KB | 75 KB (71%) | ✓ | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 102 KB | 44 KB (43%) | ✓ | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 55 KB | 28 KB (51%) | ✓ | 3rd |
| https://sdk.mrf.io/statics/marfeel-sdk.js?id=154 | 59 KB | 26 KB (45%) | ✓ | 3rd |
| https://www.ecestaticos.com/static/cache/js/74eef46594d1bbad58e34208ec030bb8/1/ | 28 KB | 26 KB (94%) | ✓ | 3rd |
| https://www.ecestaticos.com/static/cache/js/74eef46594d1bbad58e34208ec030bb8/1/ | 1 KB | 26 KB (94%) | ✓ | 3rd |
| https://delorean.ecestaticos.com/c77e2162-8d89-4481-9def-dc2ab80b9604/js/module/router/static/swiper-B4_c2sas.js | 23 KB | 21 KB (95%) | ✓ | 3rd |
| https://www.tradingview-widget.com/static/bundles/embed/82484.0774d72716e6b07fab9b.js | 5 KB | — | ✓ | 3rd |
| https://www.elconfidencial.com/javascript/dist/common/global-conf.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
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 InventoryAction316 resources · 3.4 MB · 326 KB savings availableFIX
~326.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 316 resources | 3.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction21 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
CJS Execution CostAction1543ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.elconfidencial.com/ | 578ms | 23ms | 2ms | 3rd |
| Unattributable | 422ms | 129ms | 0ms | 3rd |
| https://www.ecestaticos.com/static/cache/js/8dc59f7cf8656d67459e40289fe058f0/1/ | 160ms | 136ms | 7ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NC2TW8 | 135ms | 106ms | 25ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 121ms | 98ms | 7ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-es-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 65ms | 50ms | 5ms | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 63ms | 55ms | 3ms | 3rd |
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading13 fonts (491 KB)PASS
Web fonts
13
491 KB total
Render-blocking
0
of 13
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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 ~93 KB and ~186 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall316 requests over 3540msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.elconfidencial.com www.elconfidencial.com | Other | 578ms | 105 KB | — | €9/mo | Costly |
Unattributable Unattributable | Other | 422ms | 0 KB | — | €7/mo | Costly |
www.ecestaticos.com www.ecestaticos.com | Other | 160ms | 105 KB | 71% | €3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 135ms | 173 KB | 47% | €2/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 121ms | 102 KB | 43% | €2/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 65ms | 55 KB | — | €1/mo | Optional |
script.crazyegg.com script.crazyegg.com | Other | 63ms | 55 KB | 51% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.elconfidencial.com adds 578ms and costs ~€9/month
- Unattributable adds 422ms and costs ~€7/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
www.elconfidencial.com takes 578ms 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 422ms 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
71% of www.ecestaticos.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
51% of script.crazyegg.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