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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
6
PASS
8
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
36
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

4.24 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

9.97 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

268 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.458

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

6.00 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.

10.55 s

Page Load Progression

718 ms
1.4 s
2.2 s
2.9 s
3.6 s
4.3 s
5.0 s
5.7 s
Checks
17
8 PASS 6 REVIEW 1 FIX
F
JS Execution Cost
Action
4445ms total JS execution
FIX
4445ms total JS execution
Warning::
https://ine.es/: 1454ms CPU time
Warning::
Unattributable: 855ms CPU time
Warning::
https://ine.es/menus/_b/js/general.js?L=0&chars=UT...: 851ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-ZDRR...: 250ms CPU time
Info::
https://ine.es/menus/_b/js/component/ine.js?L=0: 213ms CPU time
Info::
Third-party scripts: 1279ms (29% of total)

Main Thread Breakdown

Script Evaluation 46% Other 29% Style & Layout 12% Rendering 8% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://ine.es/1454ms90ms3ms1st
Unattributable855ms89ms0ms3rd
https://ine.es/menus/_b/js/general.js?L=0&chars=UTF-8851ms825ms5ms1st
https://www.googletagmanager.com/gtag/js?id=G-ZDRRXGDE71&cx=c&gtm=4e64k1250ms186ms63ms3rd
https://ine.es/menus/_b/js/component/ine.js?L=0213ms136ms13ms1st
https://ine.es/menus/plantillas/raizweb/home/js/home.js187ms183ms1ms1st
https://ine.es/menus/plantillas/buscar/js/liveSearch.js179ms177ms0ms1st
https://ine.es/menus/_b/js/component/components.js?L=0&crrsl=1&ilp=1&pnls=1&smap=1&emap=1&sv=1&sshow=1144ms76ms10ms1st
https://www.googletagmanager.com/gtag/js?id=UA-19028967-1119ms72ms42ms3rd
https://ine.es/menus/js/calendario/calendario.js77ms57ms4ms1st

Showing top 10 of 12 scripts

B
Page Weight Budget
1.4 MB transferred, 109 requests
REVIEW
1.4 MB transferred, 109 requests
Info::
Page weighs 2.4 MB (1.4 MB transferred)
Warning::
109 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.30 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
109 requests
0.30 g CO2 per page load
Images 903.6 KiB 63%
JavaScript 404.3 KiB 28%
CSS 64.5 KiB 4%
Fonts 38.1 KiB 3%
HTML 19.7 KiB 1%
Other 10.2 KiB 1%
Other 3.9 KiB 0%
0 2.4 MB 4.9 MB
Under budget

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

C
Image Optimization
Action
69 images, 0 KB saveable
REVIEW
69 images, 0 KB saveable
Warning::
https://ine.es/images/home/apli_atlas_renta_hogare... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/_b/img/youtube_social_icon_re... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/dynT3/img/CatGrp/2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/logo_IOE.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/carrusel_ods_1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/infografias.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/dynT3/img/CatGrp/2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_Logo_ODS_av-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/revista_indice.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/Logo-ES_DataLab.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_flujos.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/dynT3/img/CatGrp/2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/calidad_2.gif is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/encuentro_productores.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/CNAE2025_carrusel.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_IPC_renta-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_territoriales-lazy... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/aviso_indice_101.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/aviso_indice100-lazy.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_defunciones.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_cumple.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/dynT3/img/CatGrp/2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/aviso_PEN_1-lazy.jpeg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_premio_2025_carrusel-l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/iria.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_ods.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_habitantes-lazy.jp... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/piramide_h.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/explica.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_turismo.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/logoycurvas.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/masine.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/aviso_api_3-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_aviso_plan-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_aviso_becas-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/carrusel_esc_ganadores_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/img_nombres-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/js/calendario/calen.gif is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_Elecc_AND_2026.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/img_aviso_opo-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/aviso_espacif_2026.PNG is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/aviso_API-lazy.jfif is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/img_Transparencia_carru... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/images/home/apli_nom_naci.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/_b/img/LogoINE.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/dynT3/img/CatGrp/2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/GS_FILES/logo_esc_opaco-lazy.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ine.es/menus/plantillas/raizweb/home/img/t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
69 images 904 KB
0 oversized -0 KB
69 legacy format
57 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Bundles
Action
20 scripts, 128 KB unused
REVIEW
20 scripts, 128 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-ZDRR...: 65 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-190...: 63 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://ine.es/menus/_b/js/component/ine.js?L=0: unminified — 12 KB could be saved
Warning::
https://ine.es/menus/_b/js/component/components.js...: unminified — 7 KB could be saved
Info::
Total unused JavaScript: 128 KB
128 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-ZDRRXGDE71&cx=c&gtm=4e64k1151 KB65 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=UA-19028967-1117 KB63 KB (54%)✓3rd
https://ine.es/ua/urlcorta.js2 KB—✓1st
https://ine.es/menus/_b/js/component/ine.js?L=031 KB—✗1st
https://ine.es/menus/_b/js/component/components.js?L=0&crrsl=1&ilp=1&pnls=1&smap=1&emap=1&sv=1&sshow=126 KB—✗1st
https://ine.es/menus/_b/js/lazy.min.js1 KB—✓1st
https://ine.es/menus/NC/status.js?L=00 KB—✓1st
https://ine.es/menus/js/cookie.js1 KB—✓1st
https://ine.es/menus/plantillas/buscar/js/liveSearch.js1 KB—✓1st
https://ine.es/menus/_b/js/cabecera.js?v=1&qz=06 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Page Weight Inventory
Action
109 resources · 1.4 MB · 128 KB savings available
REVIEW
109 resources · 1.4 MB · 128 KB savings available
Warning::
Page weight 420 KB over 1MB target
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~128 KB of savings available
Info::
5 third-party resources (21% of weight)
Info::
1 resources over 200KB
109 resources · 1.4 MiB · 5 third-party 420.3 KiB over 1MB target
Image 63% · 907.5 KiB
JavaScript 28% · 404.3 KiB
CSS 4% · 64.5 KiB
Font 3% · 38.1 KiB
Document 1% · 19.7 KiB
Other 1% · 10.2 KiB

~128.0 KiB of savings available

Remove unused JavaScript: 128.0 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
A
Third-Party Impact
21% third-party, 0 ms blocking
PASS
21% third-party, 0 ms blocking
Info::
Third-party code accounts for 21% of page weight (299.9 KiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
79%
21%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
1 fonts (38 KB)
PASS
1 fonts (38 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

38 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 4.2 s LCP 10.0 shttps://ine.es/menus/_b/fonts/ineicons/fonts/INEIcons.ttf?i5i0i5INEIcons.ttf https://ine.es/menus/_b/fonts/ineicons/fonts/INEIcons.ttf?i5i0i5 — 38.1 KiB — 420 ms — font-display: swap
INEIcons.ttf ttf swap
Size 38 KB
Load time 420 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
  • 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 ~11 KB and ~22 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
109 requests over 6087ms
INFO
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https://ine.es/menus/_b/css/cabecera_pie.css — 200 — 5.0 KiB — 619 ms — http/1.1https://ine.es/menus/_b/css/nav.css/menus/_b/css/nav.css https://ine.es/menus/_b/css/nav.css — 200 — 6.1 KiB — 630 ms — http/1.1https://ine.es/menus/_b/css/iconos.css/menus/_b/css/iconos.css https://ine.es/menus/_b/css/iconos.css — 200 — 2.5 KiB — 632 ms — http/1.1https://ine.es/menus/_b/css/cesta.css/menus/_b/css/cesta.css https://ine.es/menus/_b/css/cesta.css — 200 — 2.4 KiB — 639 ms — http/1.1https://ine.es/menus/_b/css/media.css/menus/_b/css/media.css https://ine.es/menus/_b/css/media.css — 200 — 1.1 KiB — 638 ms — http/1.1https://ine.es/menus/plantillas/raizweb/home/css/home.css/menus/plantillas/raizweb/home/css/... https://ine.es/menus/plantillas/raizweb/home/css/home.css — 200 — 4.2 KiB — 653 ms — http/1.1https://ine.es/menus/_b/css/media_query.css/menus/_b/css/media_query.css https://ine.es/menus/_b/css/media_query.css — 200 — 3.6 KiB — 830 ms — 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http/1.1https://ine.es/menus/plantillas/dynT3/img/CatGrp/2350.svg/menus/plantillas/dynT3/img/CatGrp/... https://ine.es/menus/plantillas/dynT3/img/CatGrp/2350.svg — 200 — 1.3 KiB — 215 ms — http/1.1https://ine.es/menus/plantillas/dynT3/img/CatGrp/2351.svg/menus/plantillas/dynT3/img/CatGrp/... https://ine.es/menus/plantillas/dynT3/img/CatGrp/2351.svg — 200 — 1.6 KiB — 215 ms — http/1.1https://ine.es/menus/plantillas/raizweb/home/css/SeccPrensaMov.css/menus/plantillas/raizweb/home/css/... https://ine.es/menus/plantillas/raizweb/home/css/SeccPrensaMov.css — 200 — 562 B — 215 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=UA-19028967-1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=UA-19028967-1 — 200 — 116.7 KiB — 246 ms — h2https://ine.es/menus/_b/js/politicaCookies.js/menus/_b/js/politicaCookies.js https://ine.es/menus/_b/js/politicaCookies.js — 200 — 818 B — 220 ms — http/1.1https://ine.es/menus/_b/js/component/components.js?L=0&crrsl=1&ilp=1&pnls=1&smap=1&emap=1&sv=1&sshow=1/menus/_b/js/component/components.j... https://ine.es/menus/_b/js/component/components.js?L=0&crrsl=1&ilp=1&pnls=1&smap=1&emap=1&sv=1&sshow=1 — 200 — 25.8 KiB — 433 ms — http/1.1https://ine.es/menus/_b/js/lazy.min.js/menus/_b/js/lazy.min.js https://ine.es/menus/_b/js/lazy.min.js — 200 — 786 B — 222 ms — http/1.1https://ine.es/menus/NC/status.js?L=0/menus/NC/status.js?L=0 https://ine.es/menus/NC/status.js?L=0 — 200 — 405 B — 227 ms — http/1.1https://ine.es/menus/_b/fonts/ineicons/style.css/menus/_b/fonts/ineicons/style.css https://ine.es/menus/_b/fonts/ineicons/style.css — 200 — 2.0 KiB — 368 ms — http/1.1https://ine.es/menus/js/cookie.js/menus/js/cookie.js https://ine.es/menus/js/cookie.js — 200 — 885 B — 215 ms — http/1.1https://ine.es/menus/plantillas/buscar/js/liveSearch.js/menus/plantillas/buscar/js/liveSea... https://ine.es/menus/plantillas/buscar/js/liveSearch.js — 200 — 744 B — 216 ms — http/1.1https://ine.es/menus/_b/js/cabecera.js?v=1&qz=0/menus/_b/js/cabecera.js?v=1&qz=0 https://ine.es/menus/_b/js/cabecera.js?v=1&qz=0 — 200 — 6.3 KiB — 217 ms — http/1.1https://ine.es/ua/urlcorta.js/ua/urlcorta.js https://ine.es/ua/urlcorta.js — 200 — 2.3 KiB — 227 ms — http/1.1
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 4.2 s LCP 10.0 shttps://ine.es// https://ine.es/ — 200 — 19.7 KiB — 1.1 s — http/1.1https://ine.es/menus/_b/js/general.js?L=0&chars=UTF-8/menus/_b/js/general.js?L=0&chars=U... https://ine.es/menus/_b/js/general.js?L=0&chars=UTF-8 — 200 — 12.2 KiB — 223 ms — http/1.1https://ine.es/menus/_b/js/component/ine.js?L=0/menus/_b/js/component/ine.js?L=0 https://ine.es/menus/_b/js/component/ine.js?L=0 — 200 — 31.1 KiB — 1.1 s — http/1.1https://ine.es/menus/_b/css/component/components.css?L=0&crrsl=1&ilp=1&pnls=1&smap=1&emap=1&sv=1&sshow=1/menus/_b/css/component/components.... https://ine.es/menus/_b/css/component/components.css?L=0&crrsl=1&ilp=1&pnls=1&smap=1&emap=1&sv=1&sshow=1 — 200 — 13.6 KiB — 407 ms — http/1.1https://ine.es/menus/_b/css/base.css?vnew=0/menus/_b/css/base.css?vnew=0 https://ine.es/menus/_b/css/base.css?vnew=0 — 200 — 17.9 KiB — 441 ms — http/1.1https://ine.es/menus/_b/css/cabecera_pie.css/menus/_b/css/cabecera_pie.css https://ine.es/menus/_b/css/cabecera_pie.css — 200 — 5.0 KiB — 619 ms — http/1.1https://ine.es/menus/_b/css/nav.css/menus/_b/css/nav.css https://ine.es/menus/_b/css/nav.css — 200 — 6.1 KiB — 630 ms — http/1.1https://ine.es/menus/_b/css/iconos.css/menus/_b/css/iconos.css https://ine.es/menus/_b/css/iconos.css — 200 — 2.5 KiB — 632 ms — http/1.1https://ine.es/menus/_b/css/cesta.css/menus/_b/css/cesta.css https://ine.es/menus/_b/css/cesta.css — 200 — 2.4 KiB — 639 ms — http/1.1https://ine.es/menus/_b/css/media.css/menus/_b/css/media.css https://ine.es/menus/_b/css/media.css — 200 — 1.1 KiB — 638 ms — http/1.1https://ine.es/menus/plantillas/raizweb/home/css/home.css/menus/plantillas/raizweb/home/css/... https://ine.es/menus/plantillas/raizweb/home/css/home.css — 200 — 4.2 KiB — 653 ms — http/1.1https://ine.es/menus/_b/css/media_query.css/menus/_b/css/media_query.css https://ine.es/menus/_b/css/media_query.css — 200 — 3.6 KiB — 830 ms — http/1.1https://ine.es/menus/plantillas/raizweb/home/css/SeccPrensa.css?id=96&id=104c/menus/plantillas/raizweb/home/css/... https://ine.es/menus/plantillas/raizweb/home/css/SeccPrensa.css?id=96&id=104c — 200 — 2.5 KiB — 840 ms — http/1.1https://ine.es/menus/plantillas/raizweb/home/css/homeMov.css/menus/plantillas/raizweb/home/css/... https://ine.es/menus/plantillas/raizweb/home/css/homeMov.css — 200 — 648 B — 842 ms — http/1.1https://ine.es/menus/_b/img/LogoINE.svg/menus/_b/img/LogoINE.svg https://ine.es/menus/_b/img/LogoINE.svg — 200 — 3.3 KiB — 215 ms — http/1.1https://ine.es/menus/_b/img/LogoINESiglasMini.svg/menus/_b/img/LogoINESiglasMini.svg https://ine.es/menus/_b/img/LogoINESiglasMini.svg — 200 — 890 B — 214 ms — http/1.1https://ine.es/menus/plantillas/dynT3/img/CatGrp/2349.svg/menus/plantillas/dynT3/img/CatGrp/... https://ine.es/menus/plantillas/dynT3/img/CatGrp/2349.svg — 200 — 1.6 KiB — 217 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
29% of JavaScript execution is third-party
First-party Third-party 1279ms · 289KB · €20/mo
Unattributable
Other
Costly
Execution 855ms
Transfer 0 KB
Monthly Cost €14/mo
Google Tag Manager
Tag Manager
Costly
Execution 250ms
Transfer 151 KB
Unused 43%
Monthly Cost €4/mo
Google Tag Manager
Tag Manager
Optional
Execution 119ms
Transfer 117 KB
Unused 54%
Monthly Cost €2/mo
Google Analytics
Analytics
Optional
Execution 55ms
Transfer 21 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 855ms and costs ~€14/month
  • Google Tag Manager adds 250ms and costs ~€4/month

Unattributable takes 855ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 250ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

54% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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