Performance
· 17 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.
7.61 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
14.67 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
952 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.95 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.
14.77 s
Page Load Progression
DPage Weight BudgetAction2.1 MB transferred, 187 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
FJS Execution CostAction6596ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.aepd.es/ | 2108ms | 31ms | 2ms | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_KRjtvzl6UujB23-j_sF6dqOcbqg2z8ej98A8RU9bGsg.tf2uFMYvjWAlCUT5WXaeZQUNd2G33v-j5Wu3kx2WVYM.js?v=10.5.9 | 1821ms | 780ms | 0ms | 3rd |
| Unattributable | 953ms | 38ms | 0ms | 3rd |
| https://cdn.landbot.io/landbot-3/landbot-3.0.0.js | 579ms | 237ms | 302ms | 3rd |
| https://www.aepd.es/libraries/cookiesjsr/dist/cookiesjsr.min.js?v=1.0.13 | 461ms | 408ms | 43ms | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 | 343ms | 122ms | 17ms | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_ZtdbQ0KixOXvDE-3gWdwxrK-EA4txgCgmL91b1xDDIE.7kEPXYsKg_71bJ5SFPIQQJJ1Es3UpMIXc_NWEkC5VSY.js?tdu70c | 281ms | 24ms | 0ms | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_nhVVv-gKMkJM1V_U6fvrl_YoUfgtGNEKFRkXwOaPJy0.xuR7iMh2Am9HydOLKnVJHH7jvbMEW9C-KUSP04n-XHA.js?v=10.5.9 | 50ms | 13ms | 26ms | 3rd |
DJS BundlesAction76 scripts, 450 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.landbot.io/landbot-3/landbot-3.0.0.js | 653 KB | 401 KB (62%) | ✓ | 3rd |
| https://www.aepd.es/libraries/cookiesjsr/dist/cookiesjsr.min.js?v=1.0.13 | 108 KB | 49 KB (46%) | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_w0iO3No0CsyHgJmryEbhwpkh5zx6m6dhvawBt4ufwyA.RtEBetRh01POovnWIXDDFX5pBdLJ5Y7VR7H-MAv70yk.js?v=1.0.1 | 1 KB | — | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_SuZ3njmnGTRU9js_EZaHBm7v4FWhb-N2wuc_L5HxueY.Z7CxpRorhnzgyZbW2UA4qCNPlLMf21iVsWDobvU9O34.js?tdu70c | 3 KB | — | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_Hpe5jrMuKXrV4HSTMApXJsNBxraAgcHUrTjxkwWKqy8.JI_l3COS35-8I_nTZ-Hwao_7JmZ_yf3WrPnIs5yIxPc.js?v=10.5.9 | 0 KB | — | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_V1oRQ-kJlXBZaEklOtPUe_1t8-l0RS94HJ3gsqxKikc.r4c4gHch14Aj-FbxxQwgP0OvfYZ-7YM6FrIWxSMCtNs.js?v=10.5.9 | 2 KB | — | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_KRjtvzl6UujB23-j_sF6dqOcbqg2z8ej98A8RU9bGsg.tf2uFMYvjWAlCUT5WXaeZQUNd2G33v-j5Wu3kx2WVYM.js?v=10.5.9 | 1 KB | — | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_mjv4qhOv2_1-EQeYpZwvWqHcMokP3Cu36uHh9tRNXFY.ZMiXmWhO2IRqXpFkfrenukloVGluCnsZh5mBhnpnvpQ.js?v=10.5.9 | 0 KB | — | ✓ | 3rd |
| https://www.aepd.es/modules/custom/aepd_power_bi/js/powerbi_iframe_blocker.js?v=1.x | 2 KB | — | ✓ | 3rd |
| https://www.aepd.es/sites/default/files/js/optimized/js_ezwJb8QjKN82W11Y2widYXtFt5DfOo-fgZxIg_9sAik.-zfJtSXwa7zZcPXLOHPVrt5Ype66ocHnbjUDtmufx3s.js?v=10.5.9 | 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
FPage Weight InventoryAction187 resources · 2.1 MB · 450 KB savings availableFIX
~450.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 187 resources | 2.1 MiB | ||||||
CImage OptimizationAction41 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.
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
BHTTP Cachingmax-age=0REVIEW
max-age=0
| Directive | Value | Meaning |
|---|---|---|
| max-age | 0 | Cache for 0 seconds |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (251 KB)PASS
Web fonts
4
251 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~2 KB and ~4 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall187 requests over 3943msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.aepd.es www.aepd.es | Other | 2108ms | 38 KB | — | €23/mo | Costly |
www.aepd.es www.aepd.es | Other | 1821ms | 1 KB | — | €20/mo | Costly |
Unattributable Unattributable | Other | 953ms | 0 KB | — | €10/mo | Costly |
cdn.landbot.io cdn.landbot.io | Other | 579ms | 653 KB | 62% | €6/mo | Costly |
www.aepd.es www.aepd.es | Other | 461ms | 108 KB | 46% | €5/mo | Costly |
www.aepd.es www.aepd.es | Other | 343ms | 30 KB | — | €4/mo | Costly |
www.aepd.es www.aepd.es | Other | 281ms | 1 KB | — | €3/mo | Costly |
www.aepd.es www.aepd.es | Other | 50ms | 42 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.aepd.es adds 2108ms and costs ~€23/month
- www.aepd.es adds 1821ms and costs ~€20/month
- Unattributable adds 953ms and costs ~€10/month
- cdn.landbot.io adds 579ms and costs ~€6/month
- www.aepd.es adds 461ms and costs ~€5/month
- www.aepd.es adds 343ms and costs ~€4/month
- www.aepd.es adds 281ms and costs ~€3/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.aepd.es takes 2108ms 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.aepd.es takes 1821ms 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 953ms 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.landbot.io takes 579ms 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
62% of cdn.landbot.io'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
www.aepd.es takes 461ms 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.aepd.es takes 343ms 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.aepd.es takes 281ms 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