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https://www.osteriadelpane.com

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
1
REVIEW
6
PASS
12
INFO
3

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

Mobile Desktop
96
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
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.
90
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.

470 ms

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

1.39 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.

0.001

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

885 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.39 s

Page Load Progression

394 ms
788 ms
1.2 s
1.6 s
2.0 s
2.4 s
2.8 s
3.2 s
Checks
22
12 PASS 6 REVIEW 1 FIX
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
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, max-age=0, private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

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

DirectiveValueMeaning
no-store—Never cache this response
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
post-check0
pre-check0
max-age0Cache for 0 seconds
private—Only browser cache, not CDN/proxy
C
Page Weight Budget
Action
1.6 MB transferred, 27 requests
REVIEW
1.6 MB transferred, 27 requests
Info::
Page weighs 1.7 MB (1.6 MB transferred)
Warning::
Images are 1.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.1 MB
Info::
Fonts are 317 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 317 KB
Info::
27 HTTP requests
Info::
Estimated 0.34 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
27 requests
0.34 g CO2 per page load
Images 1.1 MiB 66%
Fonts 317.1 KiB 19%
JavaScript 224.7 KiB 14%
CSS 14.0 KiB 1%
HTML 2.2 KiB 0%
Other 2.2 KiB 0%
Other 429 B 0%
Other 378 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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

B
Image Optimization
10 images, 0 KB saveable
REVIEW
10 images, 0 KB saveable
Info::
All images are well-optimized
10 images 1.1 MB
0 oversized -0 KB
10 legacy format
0 missing dimensions CLS risk
B
JS Bundles
6 scripts, 59 KB unused
REVIEW
6 scripts, 59 KB unused
Warning::
https://www.osteriadelpane.com/js/jquery-3.6.0.min...: 31 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.osteriadelpane.com/js/jquery-ui-1.13.1...: 28 KB unused (87%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 59 KB
59 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.osteriadelpane.com/js/jquery-3.6.0.min.js88 KB31 KB (36%)✓1st
https://www.osteriadelpane.com/js/jquery-ui-1.13.1.min.js32 KB28 KB (87%)✓1st
https://www.osteriadelpane.com/js/sweetalert2.min.js43 KB—✓1st
https://www.osteriadelpane.com/js/polyfill.min.js4 KB—✓1st
https://www.osteriadelpane.com/js/slick.min.js42 KB—✓1st
https://www.osteriadelpane.com/js/16 KB—✓1st

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
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main 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
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
Page Weight Inventory
Action
27 resources · 1.6 MB · 59 KB savings available
REVIEW
27 resources · 1.6 MB · 59 KB savings available
Warning::
Page weight 1.6 MB exceeds 1 MB target by 616 KB
Got: 1.6 MB Expected: ≤ 1 MB
Info::
~59 KB of savings available
Info::
1 resources over 200KB
27 resources · 1.6 MiB · 0 third-party 615.8 KiB over 1MB target
Image 66% · 1.1 MiB
Font 19% · 317.1 KiB
JavaScript 14% · 224.7 KiB
CSS 1% · 14.0 KiB
Document 0% · 2.2 KiB
Other 0% · 807 B

~59.0 KiB of savings available

Remove unused JavaScript: 59.0 KiB
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-party.
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
192ms total JS execution
PASS
192ms total JS execution
Info::
https://www.osteriadelpane.com/: 138ms CPU time
Info::
https://www.osteriadelpane.com/js/jquery-3.6.0.min...: 53ms CPU time

Main Thread Breakdown

Other 42% Style & Layout 27% Script Evaluation 18% Rendering 10%
ScriptTotalScriptingParse/CompileParty
https://www.osteriadelpane.com/138ms1ms0ms1st
https://www.osteriadelpane.com/js/jquery-3.6.0.min.js53ms37ms2ms1st
A+
Font Loading
4 fonts (317 KB)
PASS
4 fonts (317 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

317 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 470 ms LCP 1.4 shttps://www.osteriadelpane.com/fonts/osteriadelpane.woff2osteriadelpane.woff2 https://www.osteriadelpane.com/fonts/osteriadelpane.woff2 — 11.0 KiB — 73 ms — font-display: swaphttps://www.osteriadelpane.com/fonts/Inter-Regular.woff2Inter-Regular.woff2 https://www.osteriadelpane.com/fonts/Inter-Regular.woff2 — 96.7 KiB — 74 ms — font-display: swaphttps://www.osteriadelpane.com/fonts/Inter-ExtraBold.woff2Inter-ExtraBold.woff2 https://www.osteriadelpane.com/fonts/Inter-ExtraBold.woff2 — 104.8 KiB — 76 ms — font-display: swaphttps://www.osteriadelpane.com/fonts/Inter-SemiBold.woff2Inter-SemiBold.woff2 https://www.osteriadelpane.com/fonts/Inter-SemiBold.woff2 — 104.6 KiB — 81 ms — font-display: swap
osteriadelpane.woff2 woff2 swap
Size 11 KB
Load time 73 ms
Start 669 ms
Risk FOUT — text flashes from fallback to web font
Inter-Regular.woff2 woff2 swap
Size 97 KB
Load time 74 ms
Start 670 ms
Risk FOUT — text flashes from fallback to web font
Inter-ExtraBold.woff2 woff2 swap
Size 105 KB
Load time 76 ms
Start 670 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Inter-SemiBold.woff2 woff2 swap
Size 105 KB
Load time 81 ms
Start 670 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~105 KB and ~210 ms

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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
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
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0, private
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
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).
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.
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
27 requests over 865ms
INFO
0 ms 500 ms 1.0 s FCP 470 ms LCP 1.4 shttps://www.osteriadelpane.com// https://www.osteriadelpane.com/ — 200 — 2.2 KiB — 432 ms — h2https://www.osteriadelpane.com/fonts/inter.css/fonts/inter.css https://www.osteriadelpane.com/fonts/inter.css — 200 — 442 B — 57 ms — h2https://www.osteriadelpane.com/fonts/osteriadelpane.css/fonts/osteriadelpane.css https://www.osteriadelpane.com/fonts/osteriadelpane.css — 200 — 1.2 KiB — 56 ms — h2https://www.osteriadelpane.com/css//css/ https://www.osteriadelpane.com/css/ — 200 — 12.3 KiB — 92 ms — h2https://www.osteriadelpane.com/js/jquery-3.6.0.min.js/js/jquery-3.6.0.min.js https://www.osteriadelpane.com/js/jquery-3.6.0.min.js — 200 — 87.7 KiB — 163 ms — h2https://www.osteriadelpane.com/js/jquery-ui-1.13.1.min.js/js/jquery-ui-1.13.1.min.js https://www.osteriadelpane.com/js/jquery-ui-1.13.1.min.js — 200 — 32.1 KiB — 163 ms — h2https://www.osteriadelpane.com/js/sweetalert2.min.js/js/sweetalert2.min.js https://www.osteriadelpane.com/js/sweetalert2.min.js — 200 — 43.2 KiB — 162 ms — h2https://www.osteriadelpane.com/js/polyfill.min.js/js/polyfill.min.js https://www.osteriadelpane.com/js/polyfill.min.js — 200 — 4.0 KiB — 91 ms — h2https://www.osteriadelpane.com/js/slick.min.js/js/slick.min.js https://www.osteriadelpane.com/js/slick.min.js — 200 — 42.1 KiB — 192 ms — h2https://www.osteriadelpane.com/js//js/ https://www.osteriadelpane.com/js/ — 200 — 15.7 KiB — 192 ms — h2https://www.osteriadelpane.com/img/logo_color.png/img/logo_color.png https://www.osteriadelpane.com/img/logo_color.png — 200 — 39.3 KiB — 194 ms — h2https://www.osteriadelpane.com/img/favicon/manifest.json/img/favicon/manifest.json https://www.osteriadelpane.com/img/favicon/manifest.json — 200 — 429 B — 417 ms — h2https://www.osteriadelpane.com/img/slider/001.jpg/img/slider/001.jpg https://www.osteriadelpane.com/img/slider/001.jpg — 200 — 133.3 KiB — 62 ms — h2https://www.osteriadelpane.com/img/slider/002.jpg/img/slider/002.jpg https://www.osteriadelpane.com/img/slider/002.jpg — 200 — 66.7 KiB — 61 ms — h2https://www.osteriadelpane.com/img/slider/003.jpg/img/slider/003.jpg https://www.osteriadelpane.com/img/slider/003.jpg — 200 — 84.5 KiB — 61 ms — h2https://www.osteriadelpane.com/img/slider/004.jpg/img/slider/004.jpg https://www.osteriadelpane.com/img/slider/004.jpg — 200 — 143.6 KiB — 107 ms — h2https://www.osteriadelpane.com/img/slider/005.jpg/img/slider/005.jpg https://www.osteriadelpane.com/img/slider/005.jpg — 200 — 100.9 KiB — 107 ms — h2https://www.osteriadelpane.com/img/slider/006.jpg/img/slider/006.jpg https://www.osteriadelpane.com/img/slider/006.jpg — 200 — 138.1 KiB — 125 ms — h2https://www.osteriadelpane.com/img/slider/007.jpg/img/slider/007.jpg https://www.osteriadelpane.com/img/slider/007.jpg — 200 — 130.8 KiB — 128 ms — h2https://www.osteriadelpane.com/img/map.jpg/img/map.jpg https://www.osteriadelpane.com/img/map.jpg — 200 — 237.5 KiB — 133 ms — h2https://www.osteriadelpane.com/fonts/osteriadelpane.woff2/fonts/osteriadelpane.woff2 https://www.osteriadelpane.com/fonts/osteriadelpane.woff2 — 200 — 11.0 KiB — 73 ms — h2https://www.osteriadelpane.com/fonts/Inter-Regular.woff2/fonts/Inter-Regular.woff2 https://www.osteriadelpane.com/fonts/Inter-Regular.woff2 — 200 — 96.7 KiB — 74 ms — h2https://www.osteriadelpane.com/fonts/Inter-ExtraBold.woff2/fonts/Inter-ExtraBold.woff2 https://www.osteriadelpane.com/fonts/Inter-ExtraBold.woff2 — 200 — 104.8 KiB — 76 ms — h2https://www.osteriadelpane.com/fonts/Inter-SemiBold.woff2/fonts/Inter-SemiBold.woff2 https://www.osteriadelpane.com/fonts/Inter-SemiBold.woff2 — 200 — 104.6 KiB — 81 ms — h2https://www.osteriadelpane.com/img/ajax-loader.gif/img/ajax-loader.gif https://www.osteriadelpane.com/img/ajax-loader.gif — 200 — 4.3 KiB — 61 ms — h2https://www.osteriadelpane.com/ajax/popups/ajax/popups https://www.osteriadelpane.com/ajax/popups — 200 — 378 B — 86 ms — h2https://www.osteriadelpane.com/img/favicon/favicon-32x32.png/img/favicon/favicon-32x32.png https://www.osteriadelpane.com/img/favicon/favicon-32x32.png — 200 — 2.2 KiB — 42 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-07-26 — 2026-08-22)

LCP (p75)

1090 ms

92% good

INP (p75)

0 ms

0% good

CLS (p75)

0.000

100% good

FCP (p75)

901 ms

TTFB (p75)

0 ms

Image Optimization
2 images, 39 KB total, 36 KB wasted
INFO

Image Optimization Audit

Total Images

2

Total Size

39 KB

Oversized

1

Wasted

36 KB

1 missing alt text 2 missing dimensions 1 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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