Performance

· 26 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.

2.25 s

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

5.05 s

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

160 ms

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

0.116

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

3.41 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.

5.05 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

15 PASS 6 REVIEW 2 FIX

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 (501.8 KiB of 501.9 KiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

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

24 images, 0 KB saveable

REVIEW

24 images, 0 KB saveable

https://www.fiatbravoclub.it/images/franck.jpg is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

24 images 278 KB

0 oversized -0 KB

24 legacy format

1 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

JS Execution Cost

Action

1112ms total JS execution

REVIEW

1112ms total JS execution

https://www.fiatbravoclub.it/: 411ms CPU time

Unattributable: 377ms CPU time

https://ajax.googleapis.com/ajax/libs/jquery/1.6.2...: 194ms CPU time

https://ssl.google-analytics.com/ga.js: 129ms CPU time

Third-party scripts: 734ms (66% of total)

Main Thread Breakdown

Other 50% Script Evaluation 23% Style & Layout 16% Rendering 6% Parse HTML & CSS 3%

Script	Total	Scripting	Parse/Compile	Party
https://www.fiatbravoclub.it/	411ms	51ms	6ms	3rd
Unattributable	377ms	7ms	0ms	1st
https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js	194ms	76ms	14ms	3rd
https://ssl.google-analytics.com/ga.js	129ms	121ms	7ms	3rd

Compression Algorithm

Action

Main response served uncompressed

REVIEW

Main 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.

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.

JavaScript Blocking

1 JS blocking issue(s) detected

REVIEW

1 JS blocking issue(s) detected

5 render-blocking <script src> tag(s) without async/defer

Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.

A+

Page Weight Budget

502 KB transferred, 42 requests

PASS

502 KB transferred, 42 requests

Page weighs 659 KB (502 KB transferred)

42 HTTP requests

Estimated 0.10 g CO2 per page load

502 KB transferred

42 requests

0.10 g CO2 per page load

Images 277.9 KiB 55%

Other 132.5 KiB 26%

JavaScript 58.8 KiB 12%

CSS 18.1 KiB 4%

Other 7.6 KiB 2%

HTML 7.0 KiB 1%

0 2.4 MB 4.9 MB

Under budget

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

No web fonts (system fonts)

PASS

No web fonts (system fonts)

No web fonts loaded — system fonts are fastest

No web fonts loaded — system fonts are optimal.

A+

JS Bundles

6 scripts, 0 KB unused

PASS

6 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js	32 KB	—	✓	3rd
https://www.fiatbravoclub.it/styles/newfbc/template/styleswitcher.js	3 KB	—	✓	3rd
https://www.fiatbravoclub.it/styles/newfbc/template/forum_fn.js	5 KB	—	✓	3rd
https://www.fiatbravoclub.it/styles/newfbc/template/jquery.li-scroller.js	2 KB	—	✓	3rd
http://count.vivistats.com/laser.asp?CountId=61830	0 KB	—	✓	3rd
https://ssl.google-analytics.com/ga.js	17 KB	—	✓	3rd

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+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

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

1 server-response signal(s) detected

PASS

1 server-response signal(s) detected

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.

Page Weight Inventory

42 resources · 502 KB · 0 KB savings available

PASS

42 resources · 502 KB · 0 KB savings available

Within 1MB page-weight target

Got: 502 KB

41 third-party resources (100% of weight)

42 resources · 501.9 KiB · 41 third-party Within 1MB page-weight target

Image 57% · 285.4 KiB

Other 26% · 132.5 KiB

JavaScript 12% · 58.8 KiB

CSS 4% · 18.1 KiB

Document 1% · 7.1 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

42 resources			501.9 KiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

CSS Performance Depth

1 CSS depth issue(s) detected

PASS

1 CSS depth issue(s) detected

5 render-blocking stylesheet(s) -- recommended: <=3

Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Aruba.it

Network Waterfall

42 requests over 2318ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

66% of JavaScript execution is third-party

First-party Third-party 734ms · 57KB · €8/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.fiatbravoclub.it www.fiatbravoclub.it	Other	411ms	7 KB	—	€4/mo	Costly
ajax.googleapis.com ajax.googleapis.com	Other	194ms	32 KB	—	€2/mo	Optional
Google Analytics ssl.google-analytics.com	Analytics	129ms	17 KB	—	€1/mo	Optional

www.fiatbravoclub.it

Other

Costly

Execution 411ms

Transfer 7 KB

Monthly Cost €4/mo

ajax.googleapis.com

Other

Optional

Execution 194ms

Transfer 32 KB

Monthly Cost €2/mo

Google Analytics

Analytics

Optional

Execution 129ms

Transfer 17 KB

Monthly Cost €1/mo

These scripts may cost more than they're worth

www.fiatbravoclub.it adds 411ms and costs ~€4/month

66% 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

www.fiatbravoclub.it takes 411ms 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

How third-party costs are calculated

Image Optimization

5 images, 87 KB total, 54 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

87 KB

Oversized

Wasted

54 KB

3 missing alt text 3 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.