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.
2.72 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.66 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
365 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.
3.81 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.
6.43 s
Page Load Progression
FPage Weight BudgetAction5.1 MB transferred, 231 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 Execution CostAction3035ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.marca.com/ | 788ms | 112ms | 13ms | 3rd |
| Unattributable | 521ms | 87ms | 0ms | 3rd |
| https://adtcdn.unidadeditorial.es/mdw/migrate.js | 341ms | 282ms | 48ms | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 191ms | 174ms | 13ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js | 182ms | 97ms | 19ms | 3rd |
| https://sdk.privacy-center.org/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-web-es-web.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 161ms | 56ms | 8ms | 3rd |
| https://sdk.privacy-center.org/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 107ms | 82ms | 15ms | 3rd |
| https://e00-elmundo.uecdn.es/js/pbma.js | 106ms | 60ms | 45ms | 3rd |
| https://tags.tiqcdn.com/utag/unidadeditorial/marca/prod/utag.js | 92ms | 68ms | 17ms | 3rd |
| https://components.unidadeditorial.es/ueSportEventsCarousel/v6/ue-sport-events-carousel.js | 89ms | 53ms | 5ms | 3rd |
Showing top 10 of 17 scripts
FJS BundlesAction60 scripts, 1.5 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://adtcdn.unidadeditorial.es/mdw/migrate.js | 1497 KB | 404 KB (27%) | ✗ | 3rd |
| https://cdn.permutive.com/10453011-272d-49cd-9043-1964fdb36fd8-web.js | 194 KB | 180 KB (93%) | ✓ | 3rd |
| https://adtcdn.unidadeditorial.es/gexp/_gam_kv_.js | 150 KB | 132 KB (88%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js | 186 KB | 130 KB (69%) | ✓ | 3rd |
| https://imasdk.googleapis.com/js/sdkloader/ima3.js | 150 KB | 102 KB (69%) | ✓ | 3rd |
| https://e00-elmundo.uecdn.es/js/pbma.js | 145 KB | 100 KB (69%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-181957286-2&l=dataLayerUE | 124 KB | 91 KB (74%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-181957286-2 | 124 KB | 61 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-V1WMLM3DL4&cx=c>m=4e64e1 | 147 KB | 60 KB (41%) | ✓ | 3rd |
| https://connect.facebook.net/es_ES/bundle/sdk.js/ | 78 KB | 50 KB (64%) | ✓ | 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 InventoryAction231 resources · 5.1 MB · 1.5 MB savings availableFIX
~1.5 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 231 resources | 5.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction108 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
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
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
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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading16 fonts (475 KB)PASS
Web fonts
16
475 KB total
Render-blocking
0
of 16
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: Google Cloud
Network Waterfall231 requests over 5546msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.marca.com www.marca.com | Other | 788ms | 90 KB | — | €4/mo | Costly |
Unattributable Unattributable | Other | 521ms | 0 KB | — | €3/mo | Costly |
adtcdn.unidadeditorial.es adtcdn.unidadeditorial.es | Other | 341ms | 1497 KB | 27% | €2/mo | Costly |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 191ms | 91 KB | 45% | €1/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 182ms | 186 KB | 69% | €1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 161ms | 55 KB | 42% | €1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 107ms | 102 KB | 43% | €1/mo | Optional |
e00-elmundo.uecdn.es e00-elmundo.uecdn.es | Other | 106ms | 145 KB | 69% | €1/mo | Optional |
tags.tiqcdn.com tags.tiqcdn.com | Other | 92ms | 81 KB | 48% | €0/mo | Optional |
components.unidadeditorial.es components.unidadeditorial.es | Other | 89ms | 34 KB | — | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 82ms | 147 KB | 41% | €0/mo | Optional |
marfeelexperimentsexperienceengine.mrf.io marfeelexperimentsexperienceengine.mrf.io | Other | 80ms | 10 KB | — | €0/mo | Optional |
cdn.permutive.com cdn.permutive.com | Other | 72ms | 194 KB | 93% | €0/mo | Optional |
aswpsdkeu.com aswpsdkeu.com | Other | 62ms | 41 KB | 74% | €0/mo | Optional |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 58ms | 70 KB | 53% | €0/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 53ms | 35 KB | 67% | €0/mo | Optional |
objetos.estaticos-marca.com objetos.estaticos-marca.com | Other | 52ms | 28 KB | — | €0/mo | Optional |
These scripts may cost more than they're worth
- www.marca.com adds 788ms and costs ~€4/month
- Unattributable adds 521ms and costs ~€3/month
- adtcdn.unidadeditorial.es adds 341ms 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
www.marca.com takes 788ms 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 521ms 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
adtcdn.unidadeditorial.es takes 341ms 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
69% 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
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
93% of cdn.permutive.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
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
53% of fundingchoicesmessages.google.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
67% 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