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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
8
PASS
8
INFO
3

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

Mobile Desktop
95
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
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.

942 ms

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

1.22 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.

0.046

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

1.29 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.

1.22 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
22
8 PASS 8 REVIEW 3 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.5 MiB of 1.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
113 resources · 1.5 MB · 258 KB savings available
FIX
113 resources · 1.5 MB · 258 KB savings available
Warning::
Page weight 1.5 MB exceeds 1 MB target by 473 KB
Got: 1.5 MB Expected: ≤ 1 MB
Info::
~258 KB of savings available
Warning::
112 third-party resources (100% of weight)
113 resources · 1.5 MiB · 112 third-party 473.0 KiB over 1MB target
JavaScript 53% · 794.4 KiB
Image 31% · 469.7 KiB
Font 8% · 113.1 KiB
CSS 5% · 75.4 KiB
Document 3% · 42.1 KiB
Other 0% · 2.3 KiB

~258.1 KiB of savings available

Remove unused JavaScript: 258.1 KiB
F
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.

No Cache-Control header

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

B
Page Weight Budget
1.5 MB transferred, 113 requests
REVIEW
1.5 MB transferred, 113 requests
Info::
Page weighs 3.8 MB (1.5 MB transferred)
Warning::
JavaScript is 794 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 794 KB
Warning::
113 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.31 g CO2 per page load
1.5 MB / 2.4 MB budget
1.5 MB transferred
113 requests
0.31 g CO2 per page load
JavaScript 794.4 KiB 53%
Images 468.6 KiB 31%
Fonts 113.1 KiB 8%
CSS 75.4 KiB 5%
HTML 41.5 KiB 3%
Other 1.4 KiB 0%
Other 1.3 KiB 0%
Other 904 B 0%
Other 366 B 0%
0 2.4 MB 4.9 MB
Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

C
Image Optimization
Action
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.specialistaseo.net/wp-content/uploads/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
16 images 469 KB
0 oversized -0 KB
14 legacy format
8 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

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

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

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

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

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

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

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

C
JS Bundles
Action
53 scripts, 258 KB unused
REVIEW
53 scripts, 258 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-WKNS...: 71 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-167...: 67 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5C7...: 65 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.iubenda.com/cookie_solution/iubenda_cs...: 55 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 258 KB
258 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-WKNSS34TV8&cx=c&gtm=4e68c1169 KB71 KB (42%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-16703084711&cx=c&gtm=4e68c1146 KB67 KB (46%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5C779ZTW150 KB65 KB (44%)✓3rd
https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.104.2/core-it.js113 KB55 KB (49%)✓3rd
https://cs.iubenda.com/autoblocking/3588591.js13 KB—✓3rd
data:text/javascript;base64,CgkJCQl2YXIgX2l1YiA9IF9pdWIgfHwge307CgkJCQlfaXViLmNzQ29uZmlndXJhdGlvbiA…0 KB—✓3rd
data:text/javascript;base64,Y29uc29sZS5sb2coJ1BpeGVsWW91clNpdGUgRnJlZSB2ZXJzaW9uIDExLjIuMC43Jyk70 KB—✓3rd
data:text/javascript;base64,CnZhciBfaXViID0gX2l1YiB8fCBbXTsNCl9pdWIuY3NDb25maWd1cmF0aW9uID0geyJhc2t…0 KB—✓3rd
https://www.specialistaseo.net/wp-includes/js/jquery/jquery.min.js?ver=3.7.130 KB—✓3rd
https://www.specialistaseo.net/wp-includes/js/dist/hooks.min.js?ver=7496969728ca0f95732d2 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

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

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.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
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.
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+
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+
JS Execution Cost
489ms total JS execution
PASS
489ms total JS execution
Info::
https://www.specialistaseo.net/: 170ms CPU time
Info::
https://www.specialistaseo.net/wp-includes/js/jque...: 85ms CPU time
Info::
Unattributable: 75ms CPU time
Info::
https://cs.iubenda.com/autoblocking/3588591.js: 55ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-5C7...: 52ms CPU time
Warning::
Third-party scripts: 414ms (85% of total)

Main Thread Breakdown

Script Evaluation 49% Style & Layout 21% Other 16% Script Parsing & Compilation 7% Rendering 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.specialistaseo.net/170ms4ms1ms3rd
https://www.specialistaseo.net/wp-includes/js/jquery/jquery.min.js?ver=3.7.185ms73ms2ms3rd
Unattributable75ms2ms0ms1st
https://cs.iubenda.com/autoblocking/3588591.js55ms53ms1ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5C779ZTW52ms44ms8ms3rd
https://www.googletagmanager.com/gtag/js?id=G-WKNSS34TV8&cx=c&gtm=4e68c151ms42ms9ms3rd
A+
Font Loading
2 fonts (113 KB)
PASS
2 fonts (113 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

113 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 942 ms LCP 1.2 shttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 54 ms — font-display: swaphttps://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/font-awesome/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/font-awesome/webfonts/fa-solid-900.woff2 — 76.5 KiB — 61 ms — font-display: swap
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 54 ms
Start 647 ms
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 76 KB
Load time 61 ms
Start 857 ms
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
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+
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
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
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
113 requests over 1379ms
INFO
0 ms 500 ms 1.0 s FCP 942 ms LCP 1.2 shttps://specialistaseo.net// https://specialistaseo.net/ — 301 — 247 B — 94 ms — http/1.1https://www.specialistaseo.net/www.specialistaseo.net/ https://www.specialistaseo.net/ — 200 — 41.5 KiB — 351 ms — h2https://cs.iubenda.com/autoblocking/3588591.jscs.iubenda.com/autoblocking/3588591... https://cs.iubenda.com/autoblocking/3588591.js — 200 — 12.7 KiB — 25 ms — h2https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_993387aae0b00dd250f8c6bacb602bb4.php?ver=2.8.8www.specialistaseo.net/wp-content/c... https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_993387aae0b00dd250f8c6bacb602bb4.php?ver=2.8.8 — 200 — 7.3 KiB — 77 ms — h2https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_b2b463a5bdb73833be2a6afbc1843ddd.php?ver=6.1.6www.specialistaseo.net/wp-content/c... https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_b2b463a5bdb73833be2a6afbc1843ddd.php?ver=6.1.6 — 200 — 1.0 KiB — 71 ms — h2https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_a5bf64d5859ee94a3e8e93d592d6d2a0.php?ver=2.8.8www.specialistaseo.net/wp-content/c... https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_a5bf64d5859ee94a3e8e93d592d6d2a0.php?ver=2.8.8 — 200 — 274 B — 72 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/frontend.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/frontend.min.css?ver=3.33.0 — 200 — 7.1 KiB — 70 ms — h2https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_bb66011f4e2faca1d6f9a8cb1015f929.php?ver=1786550665www.specialistaseo.net/wp-content/c... https://www.specialistaseo.net/wp-content/cache/autoptimize/autoptimize_single_bb66011f4e2faca1d6f9a8cb1015f929.php?ver=1786550665 — 200 — 525 B — 74 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-image.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-image.min.css?ver=3.33.0 — 200 — 235 B — 51 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-heading.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-heading.min.css?ver=3.33.0 — 200 — 194 B — 55 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-spacer.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-spacer.min.css?ver=3.33.0 — 200 — 373 B — 50 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeIn.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeIn.min.css?ver=3.33.0 — 200 — 136 B — 55 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-image-box.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-image-box.min.css?ver=3.33.0 — 200 — 385 B — 55 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeInLeft.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeInLeft.min.css?ver=3.33.0 — 200 — 154 B — 56 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeInUp.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeInUp.min.css?ver=3.33.0 — 200 — 151 B — 55 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeInRight.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/fadeInRight.min.css?ver=3.33.0 — 200 — 154 B — 59 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-divider.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-divider.min.css?ver=3.33.0 — 200 — 776 B — 57 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/zoomIn.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/lib/animations/styles/zoomIn.min.css?ver=3.33.0 — 200 — 139 B — 56 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-accordion.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-accordion.min.css?ver=3.33.0 — 200 — 453 B — 58 ms — h2https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-icon-list.min.css?ver=3.33.0www.specialistaseo.net/wp-content/p... https://www.specialistaseo.net/wp-content/plugins/elementor/assets/css/widget-icon-list.min.css?ver=3.33.0 — 200 — 1.0 KiB — 64 ms — 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h3https://www.google-analytics.com/g/collect?v=2&tid=G-WKNSS34TV8&gtm=45je68c1v9171580791z89171764266za20gzb9171764266zd9171764266&_p=1786982145644&gcs=G100&gcd=13p3p3p3p5l1&npa=1&dma_cps=-&dma=0&ecid=1488741828&_eu=AAAAAGA&are=1&cid=589505316.1786982146&frm=0&pscdl=denied&rcb=7&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B151.0.7922.137%7CNot%253DA%253FBrand%3B99.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&gaf=2&_s=1&tag_exp=115938465~115938468~118395334~118897920~118897930~119367802~119367810~119527019~120385422&sid=1786982146&sct=1&seg=0&dl=https%3A%2F%2Fwww.specialistaseo.net%2F&dt=Web%20Agency%20Roma%3A%20Migliori%20Soluzioni%20Digitali%20In%20Italia!&en=page_view&_fv=2&_nsi=1&_ss=2&_c=1&tfd=1235www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-WKNSS34TV8&gtm=45je68c1v9171580791z89171764266za20gzb9171764266zd9171764266&_p=1786982145644&gcs=G100&gcd=13p3p3p3p5l1&npa=1&dma_cps=-&dma=0&ecid=1488741828&_eu=AAAAAGA&are=1&cid=589505316.1786982146&frm=0&pscdl=denied&rcb=7&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B151.0.7922.137%7CNot%253DA%253FBrand%3B99.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&gaf=2&_s=1&tag_exp=115938465~115938468~118395334~118897920~118897930~119367802~119367810~119527019~120385422&sid=1786982146&sct=1&seg=0&dl=https%3A%2F%2Fwww.specialistaseo.net%2F&dt=Web%20Agency%20Roma%3A%20Migliori%20Soluzioni%20Digitali%20In%20Italia!&en=page_view&_fv=2&_nsi=1&_ss=2&_c=1&tfd=1235 — 204 — 553 B — 143 ms — h2https://cdn.iubenda.com/iubenda.jscdn.iubenda.com/iubenda.js https://cdn.iubenda.com/iubenda.js — 200 — 7.1 KiB — 4 ms — h2https://www.specialistaseo.net/wp-content/uploads/2024/06/cropped-specialista-seo-giuseppe-tartarelli-logo-32x32.pngwww.specialistaseo.net/wp-content/u... https://www.specialistaseo.net/wp-content/uploads/2024/06/cropped-specialista-seo-giuseppe-tartarelli-logo-32x32.png — 200 — 1.1 KiB — 31 ms — h2https://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 — 2 ms — h2https://cdn.iubenda.com/iubenda_badge.csscdn.iubenda.com/iubenda_badge.css https://cdn.iubenda.com/iubenda_badge.css — 200 — 2.0 KiB — 3 ms — h2data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32…www.w3.org/2000/svg' width='32' hei... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32… — 200 — 0 B — 0 ms — data
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
85% of JavaScript execution is third-party
First-party Third-party 414ms · 403KB · €7/mo
www.specialistaseo.net
Other
Optional
Execution 170ms
Transfer 42 KB
Monthly Cost €3/mo
www.specialistaseo.net
Other
Optional
Execution 85ms
Transfer 30 KB
Monthly Cost €1/mo
cs.iubenda.com
Other
Optional
Execution 55ms
Transfer 13 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 52ms
Transfer 150 KB
Unused 44%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 51ms
Transfer 169 KB
Unused 42%
Monthly Cost €1/mo

85% 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
14 images, 100 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

14

Total Size

100 KB

9 missing dimensions 2 missing lazy loading
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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