https://ordinepsicologilazio.it/albo-online/roma

Performance

· 27 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

100

Best Practices

100

SEO

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

1.95 s

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

5.52 s

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

191 ms

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

0.032

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

2.69 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.

5.53 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

13 PASS 6 REVIEW 4 FIX

Third-Party Impact

Action

76% third-party, 0 ms blocking

FIX

76% third-party, 0 ms blocking

Third-party code accounts for 76% of page weight (1.4 MiB of 1.9 MiB)

Third-party blocking time is low (0 ms)

24%

76%

First-party Third-party

JS Execution Cost

Action

2243ms total JS execution

FIX

2243ms total JS execution

https://ordinepsicologilazio.it/albo-online/roma: 1281ms CPU time

Unattributable: 426ms CPU time

https://ordinepsicologilazio.it/media/vendor/jquer...: 337ms CPU time

https://ordinepsicologilazio.it/templates/bsitalia...: 78ms CPU time

https://ordinepsicologilazio.it/templates/bsitalia...: 61ms CPU time

Third-party scripts: 60ms (3% of total)

Main Thread Breakdown

Other 32% Style & Layout 30% Script Evaluation 19% Parse HTML & CSS 7% Rendering 7% Script Parsing & Compilation 4%

Script	Total	Scripting	Parse/Compile	Party
https://ordinepsicologilazio.it/albo-online/roma	1281ms	35ms	5ms	1st
Unattributable	426ms	24ms	0ms	1st
https://ordinepsicologilazio.it/media/vendor/jquery/js/jquery.min.js?3.7.1	337ms	235ms	12ms	1st
https://ordinepsicologilazio.it/templates/bsitalia/js/bootstrap-italia.min.js?f336a069182e45b9466ec5c0c2e12fc6	78ms	48ms	28ms	1st
https://ordinepsicologilazio.it/templates/bsitalia/css/template.min.css?f336a069182e45b9466ec5c0c2e12fc6	61ms	0ms	0ms	1st
https://analytics.odpl.it/matomo.js	60ms	50ms	10ms	3rd

Page Weight Inventory

Action

46 resources · 1.9 MB · 42 KB savings available

FIX

46 resources · 1.9 MB · 42 KB savings available

Page weight 1.9 MB exceeds 1 MB target by 921 KB

Got: 1.9 MB Expected: ≤ 1 MB

15 third-party resources (76% of weight)

1 resources over 200KB

46 resources · 1.9 MiB · 15 third-party 921.4 KiB over 1MB target

Image 77% · 1.5 MiB

JavaScript 9% · 173.0 KiB

Font 8% · 146.7 KiB

CSS 6% · 113.6 KiB

Document 0% · 9.4 KiB

Other 0% · 151 B

~42.2 KiB of savings available

Remove unused JavaScript: 42.2 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

46 resources			1.9 MiB

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Last-Modified header present

Cache-Control

no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Directive	Value	Meaning
no-store	—	Never cache this response
no-cache	—	Cache but always revalidate first
must-revalidate	—	Must recheck with server after expiry
post-check	0
pre-check	0

Page Weight Budget

Action

1.9 MB transferred, 46 requests

REVIEW

1.9 MB transferred, 46 requests

Page weighs 2.9 MB (1.9 MB transferred)

Images are 1.4 MB — compress or use modern formats

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

Got: 1.4 MB

46 HTTP requests

Estimated 0.40 g CO2 per page load

1.9 MB transferred

46 requests

0.40 g CO2 per page load

Images 1.4 MiB 75%

JavaScript 173.0 KiB 9%

Fonts 146.7 KiB 8%

CSS 113.6 KiB 6%

Other 52.1 KiB 3%

HTML 9.4 KiB 0%

Other 151 B 0%

0 2.4 MB 4.9 MB

Approaching limit

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

Image Optimization

13 images, 0 KB saveable

REVIEW

13 images, 0 KB saveable

All images are well-optimized

13 images 1.4 MB

0 oversized -0 KB

13 legacy format

0 missing dimensions CLS risk

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.

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

8 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.

CSS Performance Depth

2 CSS depth issue(s) detected

REVIEW

2 CSS depth issue(s) detected

7 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.

16 `@font-face` rule(s) without `font-display` -- causes FOIT

An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

5 fonts (147 KB)

PASS

5 fonts (147 KB)

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

Web fonts

147 KB total

Render-blocking

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

TitilliumWeb-Light.woff2 woff2 swap

Size 18 KB

Load time 105 ms

Start 1.1 s