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.
2.78 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.00 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
474 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.698
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.68 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.
8.24 s
Page Load Progression
742 ms
1.5 s
2.2 s
3.0 s
3.7 s 4.5 s 5.2 s
5.9 sFPage Weight BudgetAction6.0 MB transferred, 287 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
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
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 Execution CostAction3150ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 635ms | 149ms | 0ms | 3rd |
| https://www.expansion.com/ | 489ms | 74ms | 10ms | 3rd |
| https://sdk.privacy-center.org/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-web-en-web.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 357ms | 214ms | 12ms | 3rd |
| https://cdn.tinypass.com/api/tinypass.min.js | 220ms | 159ms | 24ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js | 150ms | 116ms | 19ms | 3rd |
| https://sdk.privacy-center.org/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 140ms | 106ms | 9ms | 3rd |
| https://adtcdn.unidadeditorial.es/edw/migrate.js | 118ms | 80ms | 38ms | 3rd |
| https://tags.tiqcdn.com/utag/unidadeditorial/expansion/prod/utag.js | 107ms | 75ms | 25ms | 3rd |
| https://cdn.permutive.com/10453011-272d-49cd-9043-1964fdb36fd8-web.js | 102ms | 52ms | 48ms | 3rd |
| https://es-config.sensic.net/s2s-web.js | 100ms | 85ms | 7ms | 3rd |
Showing top 10 of 20 scripts
FJS BundlesAction111 scripts, 1.9 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://adtcdn.unidadeditorial.es/edw/migrate.js | 1340 KB | 806 KB (60%) | ✗ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js | 186 KB | 130 KB (70%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-791139749&cx=c>m=4e64e1 | 134 KB | 101 KB (76%) | ✓ | 3rd |
| https://e00-elmundo.uecdn.es/js/pbex.js | 145 KB | 99 KB (69%) | ✓ | 3rd |
| https://adtcdn.unidadeditorial.es/gexp/_gam_kv_.js | 150 KB | 97 KB (65%) | ✓ | 3rd |
| https://cdn.tinypass.com/api/tinypass.min.js | 132 KB | 70 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-12125487&cx=c>m=4e64e1 | 129 KB | 64 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-10944295485&cx=c>m=4e64e1 | 145 KB | 63 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-791139749 | 134 KB | 61 KB (46%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6PBJCECHCM&cx=c>m=4e64e1 | 145 KB | 60 KB (42%) | ✓ | 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 InventoryAction287 resources · 6.0 MB · 1.9 MB savings availableFIX
~1.9 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 287 resources | 6.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction98 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
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 Loading12 fonts (271 KB)PASS
Web fonts
12
271 KB total
Render-blocking
0
of 12
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
Network Waterfall287 requests over 5760msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 635ms | 0 KB | — | €7/mo | Costly |
www.expansion.com www.expansion.com | Other | 489ms | 91 KB | — | €5/mo | Costly |
sdk.privacy-center.org sdk.privacy-center.org | Other | 357ms | 54 KB | — | €4/mo | Costly |
cdn.tinypass.com cdn.tinypass.com | Other | 220ms | 132 KB | 53% | €2/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 150ms | 186 KB | 70% | €2/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 140ms | 102 KB | 41% | €2/mo | Optional |
adtcdn.unidadeditorial.es adtcdn.unidadeditorial.es | Other | 118ms | 1340 KB | 60% | €1/mo | Optional |
tags.tiqcdn.com tags.tiqcdn.com | Other | 107ms | 79 KB | 45% | €1/mo | Optional |
cdn.permutive.com cdn.permutive.com | Other | 102ms | 194 KB | 20% | €1/mo | Optional |
es-config.sensic.net es-config.sensic.net | Other | 100ms | 31 KB | — | €1/mo | Optional |
e00-elmundo.uecdn.es e00-elmundo.uecdn.es | Other | 96ms | 145 KB | 69% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 87ms | 145 KB | 42% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 86ms | 145 KB | 44% | €1/mo | Optional |
components.unidadeditorial.es components.unidadeditorial.es | Other | 80ms | 182 KB | 15% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 73ms | 134 KB | 46% | €1/mo | Optional |
aswpsdkeu.com aswpsdkeu.com | Other | 69ms | 41 KB | 74% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 65ms | 116 KB | 51% | €1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 63ms | 1 KB | — | €1/mo | Optional |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 60ms | 70 KB | 49% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 55ms | 129 KB | 49% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 635ms and costs ~€7/month
- www.expansion.com adds 489ms and costs ~€5/month
- sdk.privacy-center.org adds 357ms and costs ~€4/month
- cdn.tinypass.com adds 220ms 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
Unattributable takes 635ms 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
www.expansion.com takes 489ms 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
sdk.privacy-center.org takes 357ms 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
cdn.tinypass.com takes 220ms 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
53% of cdn.tinypass.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
70% of securepubads.g.doubleclick.net'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
60% of adtcdn.unidadeditorial.es'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
69% of e00-elmundo.uecdn.es'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
74% of aswpsdkeu.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 Google Tag Manager'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