Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
3.28 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
11.05 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
71 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.386
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.01 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.
12.50 s
Page Load Progression
FPage Weight BudgetAction9.1 MB transferred, 120 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
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.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DJS BundlesAction29 scripts, 287 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/jquery-ui.js | 111 KB | 94 KB (84%) | ✗ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/bootstrap-italia.bundle.min.js?ver=2.8.8 | 110 KB | 75 KB (68%) | ✓ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/jquery-ui.min.js | 57 KB | 51 KB (89%) | ✓ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/bootstrap-italia.min.js | 54 KB | 36 KB (67%) | ✓ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/leaflet.js?ver=6.6.3 | 38 KB | 32 KB (84%) | ✓ | 1st |
| https://www.oprc.it/wp-content/plugins/contact-form-7/includes/js/index.js?ver=5.9.7 | 4 KB | — | ✓ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/assets/fullcalendar/locales/it.js?ver=6.6.3 | 0 KB | — | ✓ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/assets/fullcalendar/custom.js?ver=6.6.3 | 0 KB | — | ✓ | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/inc/pre-scripts.js?ver=6.6.3 | 0 KB | — | ✓ | 1st |
| blob:https://www.oprc.it/2002ddaf-410a-4599-8d64-287949b08b59 | -0 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction38 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS Execution CostAction1800ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.oprc.it/ | 589ms | 52ms | 6ms | 1st |
| Unattributable | 482ms | 6ms | 0ms | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/bootstrap-italia.bundle.min.js?ver=2.8.8 | 313ms | 204ms | 31ms | 1st |
| https://www.oprc.it/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 166ms | 116ms | 9ms | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/jquery-ui.min.js | 96ms | 31ms | 18ms | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/modernizr.js?ver=6.6.3 | 81ms | 19ms | 1ms | 1st |
| https://www.oprc.it/wp-content/themes/italiawp2/static/js/jquery-ui.js | 72ms | 30ms | 41ms | 1st |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction120 resources · 9.1 MB · 287 KB savings availableREVIEW
~286.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 120 resources | 9.1 MiB | ||||||
BJavaScript Blocking1 JS blocking issue(s) detectedREVIEW
BCSS Performance Depth2 CSS depth issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact2% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading11 fonts (290 KB)PASS
Web fonts
11
290 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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 ~9 KB and ~18 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall120 requests over 2349msINFO
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-07-23 — 2026-08-19)
LCP (p75)
2129 ms
83% good
INP (p75)
113 ms
94% good
CLS (p75)
0.250
43% good
FCP (p75)
2026 ms
TTFB (p75)
784 ms
Image Optimization56 images, 13228 KB total, 4925 KB wastedINFO
Image Optimization Audit
Total Images
56
Total Size
13228 KB
Oversized
17
Wasted
4925 KB