Performance

· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

Best Practices

SEO

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

2.31 s

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

5.56 s

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

0 ms

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

0.022

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

2.79 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.

5.56 s

Page Load Progression

375 ms

750 ms

1.1 s

1.5 s

1.9 s

2.2 s

2.6 s

3.0 s

Checks

8 PASS 8 REVIEW 4 FIX

Page Weight Budget

Action

4.0 MB transferred, 31 requests

FIX

4.0 MB transferred, 31 requests

Page weighs 4.1 MB (4.0 MB transferred)

Images are 3.6 MB — compress or use modern formats

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Got: 3.6 MB

31 HTTP requests

Estimated 0.84 g CO2 per page load

4.0 MB transferred

31 requests

0.84 g CO2 per page load

Images 3.6 MiB 88%

JavaScript 205.0 KiB 5%

CSS 150.8 KiB 4%

Fonts 101.2 KiB 2%

HTML 17.1 KiB 0%

Other 4.4 KiB 0%

0 2.4 MB 4.9 MB

Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (4.0 MiB of 4.0 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

Page Weight Inventory

Action

31 resources · 4.0 MB · 77 KB savings available

FIX

31 resources · 4.0 MB · 77 KB savings available

Page weight 4.0 MB exceeds 1 MB target by 3.0 MB

Got: 4.0 MB Expected: ≤ 1 MB

~77 KB of savings available

30 third-party resources (100% of weight)

4 resources over 200KB

31 resources · 4.0 MiB · 30 third-party 3.0 MiB over 1MB target

Image 88% · 3.6 MiB

JavaScript 5% · 205.0 KiB

CSS 4% · 150.8 KiB

Font 2% · 101.2 KiB

Document 0% · 18.1 KiB

~76.8 KiB of savings available

Remove unused JavaScript: 76.8 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

31 resources			4.0 MiB

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

Image Optimization

5 images, 0 KB saveable

REVIEW

5 images, 0 KB saveable

All images are well-optimized

5 images 3.6 MB

0 oversized -0 KB

5 legacy format

0 missing dimensions CLS risk

JS Bundles

11 scripts, 77 KB unused

REVIEW

11 scripts, 77 KB unused

https://www.alanacreaciones.info/wp-includes/js/jq...: 50 KB unused (59%)

Consider code splitting or tree shaking to reduce unused code.

https://www.alanacreaciones.info/wp-content/plugin...: 26 KB unused (59%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 77 KB

77 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.alanacreaciones.info/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	86 KB	50 KB (59%)	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/complianz-gdpr/cookiebanner/js/complianz.min.js?ver=1793488684	45 KB	26 KB (59%)	✓	3rd
https://www.alanacreaciones.info/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1	13 KB	—	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/woocommerce/assets/js/sourcebuster/sourcebuster.min.js?ver=11.2.1	15 KB	—	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/woocommerce/assets/js/frontend/order-attribution.min.js?ver=11.2.1	3 KB	—	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/woocommerce/assets/js/jquery-blockui/jquery.blockUI.min.js?ver=2.7.0-wc.11.2.1	10 KB	—	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/woocommerce/assets/js/frontend/add-to-cart.min.js?ver=11.2.1	4 KB	—	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/woocommerce/assets/js/js-cookie/js.cookie.min.js?ver=2.1.4-wc.11.2.1	2 KB	—	✓	3rd
https://www.alanacreaciones.info/wp-content/plugins/woocommerce/assets/js/frontend/woocommerce.min.js?ver=11.2.1	4 KB	—	✓	3rd
blob:https://www.alanacreaciones.info/fb86b025-06b6-40f4-b794-1645705fbdff	-0 KB	—	✓	3rd

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

HTTP/3 (QUIC)

HTTP/3 not advertised

REVIEW

HTTP/3 not advertised

HTTP/3 (QUIC) is not advertised

HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.

Document Compression

Action

Document response served uncompressed

REVIEW

Document response served uncompressed

Main HTML response has no Content-Encoding (uncompressed)

The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.

Asset Compression

1 of 1 asset host serve text uncompressed

REVIEW

1 of 1 asset host serve text uncompressed

www.alanacreaciones.info serves text assets uncompressed (assets: 29)

The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.

Got: www.alanacreaciones.info (text/css)

Main HTML Cache-Control

No Cache-Control header on main HTML response

REVIEW

No Cache-Control header on main HTML response

Main HTML response has no Cache-Control header

Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

127ms total JS execution

PASS

127ms total JS execution

https://www.alanacreaciones.info/: 68ms CPU time

Unattributable: 59ms CPU time

Third-party scripts: 68ms (53% of total)

Main Thread Breakdown

Other 37% Style & Layout 27% Script Evaluation 23% Parse HTML & CSS 6% Script Parsing & Compilation 3% Rendering 3%

Script	Total	Scripting	Parse/Compile	Party
https://www.alanacreaciones.info/	68ms	2ms	1ms	3rd
Unattributable	59ms	1ms	0ms	1st

A+

Font Loading

3 fonts (101 KB)

PASS

3 fonts (101 KB)

3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

101 KB total

Render-blocking

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

JTUSjIg1_i6t8kCHKm459Wl... woff2 swap

Size 35 KB

Load time 81 ms

Start 2.0 s

Risk FOUT — text flashes from fallback to web font

RWmMoKWR9v4ksMfaWd_JN9X... woff2 swap

Size 29 KB

Load time 92 ms

Start 2.0 s

Risk FOUT — text flashes from fallback to web font

nuFiD-vYSZviVYUb_rj3ij_... woff2 swap

Size 38 KB

Load time 93 ms

Start 2.0 s

Risk FOUT — text flashes from fallback to web font

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 Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Cookie

The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).

No `ETag` or `Last-Modified` -- conditional GET not supported

Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.

Network Waterfall

31 requests over 2526ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

53% of JavaScript execution is third-party

First-party Third-party 68ms · 17KB · €0/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.alanacreaciones.info www.alanacreaciones.info	Other	68ms	17 KB	—	€0/mo	Optional

www.alanacreaciones.info

Other

Optional

Execution 68ms

Transfer 17 KB

Monthly Cost €0/mo

53% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

How third-party costs are calculated

Image Optimization

5 images, 3634 KB total, 3475 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

3634 KB

Oversized

Wasted

3475 KB

5 missing dimensions 4 missing lazy loading

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