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https://agenziaseolatina.it

Performance

· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
1
REVIEW
7
PASS
12
INFO
3

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

Mobile Desktop
93
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

932 ms

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

1.55 s

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

12 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.

1.03 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.

1.55 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
23
12 PASS 7 REVIEW 1 FIX
D
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

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

B
Third-Party Impact
52% third-party, 0 ms blocking
REVIEW
52% third-party, 0 ms blocking
Warning::
Third-party code accounts for 52% of page weight (144.6 KiB of 278.6 KiB)
Info::
Third-party blocking time is low (0 ms)
48%
52%
First-party Third-party
B
JS Bundles
6 scripts, 56 KB unused
REVIEW
6 scripts, 56 KB unused
Warning::
https://cdn.iubenda.com/cookie_solution/iubenda_cs...: 56 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 56 KB
56 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.107.0/core-it.js113 KB56 KB (50%)✓3rd
https://cs.iubenda.com/autoblocking/3708937.js13 KB—✓3rd
https://cdn.iubenda.com/cs/iubenda_cs.js2 KB—✓3rd
https://cs.iubenda.com/cookie-solution/confs/js/46067085.js2 KB—✓3rd
https://cdn.iubenda.com/iubenda.js7 KB—✓3rd
https://cdn.iubenda.com/iubenda_i_badge.js5 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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
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.
B
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
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.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
279 KB transferred, 11 requests
PASS
279 KB transferred, 11 requests
Info::
Page weighs 672 KB (279 KB transferred)
Info::
11 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
279 KB / 2.4 MB budget
279 KB transferred
11 requests
0.06 g CO2 per page load
JavaScript 142.0 KiB 51%
Images 122.3 KiB 44%
HTML 10.1 KiB 4%
CSS 2.0 KiB 1%
Other 1.6 KiB 1%
Other 573 B 0%
0 2.4 MB 4.9 MB
Under budget
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+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 122 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
267ms total JS execution
PASS
267ms total JS execution
Info::
https://cs.iubenda.com/autoblocking/3708937.js: 105ms CPU time
Info::
https://cdn.iubenda.com/cookie_solution/iubenda_cs...: 99ms CPU time
Info::
Unattributable: 63ms CPU time
Warning::
Third-party scripts: 204ms (76% of total)

Main Thread Breakdown

Script Evaluation 44% Other 25% Style & Layout 20% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://cs.iubenda.com/autoblocking/3708937.js105ms46ms1ms3rd
https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.107.0/core-it.js99ms80ms13ms3rd
Unattributable63ms2ms0ms1st
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Asset Compression
All 1 asset host use brotli
PASS
All 1 asset host use brotli
Info::
cdn.iubenda.com serves assets with brotli (assets: 7)
Got: cdn.iubenda.com (application/javascript)
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
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
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: gzip` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
A
Page Weight Inventory
11 resources · 279 KB · 56 KB savings available
PASS
11 resources · 279 KB · 56 KB savings available
Info::
Within 1MB page-weight target
Got: 279 KB
Info::
~56 KB of savings available
Warning::
8 third-party resources (52% of weight)
11 resources · 278.6 KiB · 8 third-party Within 1MB page-weight target
JavaScript 51% · 142.0 KiB
Image 44% · 123.9 KiB
Document 4% · 10.1 KiB
CSS 1% · 2.0 KiB
Other 0% · 573 B

~55.8 KiB of savings available

Remove unused JavaScript: 55.8 KiB
Network Waterfall
11 requests over 1309ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 932 ms LCP 1.5 shttps://agenziaseolatina.it// https://agenziaseolatina.it/ — 200 — 10.1 KiB — 641 ms — http/1.1https://cs.iubenda.com/autoblocking/3708937.jscs.iubenda.com/autoblocking/3708937... https://cs.iubenda.com/autoblocking/3708937.js — 200 — 13.3 KiB — 36 ms — h2https://cdn.iubenda.com/cs/iubenda_cs.jscdn.iubenda.com/cs/iubenda_cs.js https://cdn.iubenda.com/cs/iubenda_cs.js — 200 — 2.4 KiB — 30 ms — h2https://agenziaseolatina.it/assets/heroes/home.webp/assets/heroes/home.webp https://agenziaseolatina.it/assets/heroes/home.webp — 200 — 122.3 KiB — 476 ms — http/1.1https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.107.0/core-it.jscdn.iubenda.com/cookie_solution/iub... https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.107.0/core-it.js — 200 — 112.5 KiB — 17 ms — h2https://cs.iubenda.com/cookie-solution/confs/js/46067085.jscs.iubenda.com/cookie-solution/conf... https://cs.iubenda.com/cookie-solution/confs/js/46067085.js — 200 — 1.9 KiB — 7 ms — h2https://idb.iubenda.com/csdata?db=hits1idb.iubenda.com/csdata?db=hits1 https://idb.iubenda.com/csdata?db=hits1 — 204 — 573 B — 203 ms — h2https://cdn.iubenda.com/iubenda.jscdn.iubenda.com/iubenda.js https://cdn.iubenda.com/iubenda.js — 200 — 7.1 KiB — 8 ms — h2https://agenziaseolatina.it/favicon-48.png/favicon-48.png https://agenziaseolatina.it/favicon-48.png — 200 — 1.6 KiB — 161 ms — http/1.1https://cdn.iubenda.com/iubenda_i_badge.jscdn.iubenda.com/iubenda_i_badge.js https://cdn.iubenda.com/iubenda_i_badge.js — 200 — 4.8 KiB — 10 ms — h2https://cdn.iubenda.com/iubenda_badge.csscdn.iubenda.com/iubenda_badge.css https://cdn.iubenda.com/iubenda_badge.css — 200 — 2.0 KiB — 16 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
76% of JavaScript execution is third-party
First-party Third-party 204ms · 126KB · €2/mo
cs.iubenda.com
Other
Optional
Execution 105ms
Transfer 13 KB
Monthly Cost €1/mo
Iubenda
Consent
Essential
Execution 99ms
Transfer 113 KB
Unused 50%
Monthly Cost €1/mo

76% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

How third-party costs are calculated

Image Optimization
1 images, 122 KB total, 110 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

122 KB

Oversized

1

Wasted

110 KB

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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