https://miglioreroma.com
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
89
GRADE
B
FIX
1
REVIEW
6
PASS
16
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
80
84
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.77 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.77 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.
0.116
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.46 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.
3.77 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 sChecks
2616 PASS 6 REVIEW 1 FIX
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
Third-Party Impact
Action100% third-party, 0 ms blocking
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (627.2 KiB of 627.4 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
BImage Optimization11 images, 0 KB saveableREVIEW
Image Optimization
11 images, 0 KB saveable
11 images, 0 KB saveable
Warning::
https://www.miglioreroma.com/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 509 KB
0 oversized -0 KB
11 legacy format
1 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
BJS Execution Cost652ms total JS executionREVIEW
JS Execution Cost
652ms total JS execution
652ms total JS execution
Warning::
Unattributable: 266ms CPU time
Warning::
https://www.miglioreroma.com/: 256ms CPU time
Info::
https://www.miglioreroma.com/wp-includes/js/jquery...: 130ms CPU time
Warning::
Third-party scripts: 386ms (59% of total)
Main Thread Breakdown
Other 44% Script Evaluation 27% Style & Layout 12% Parse HTML & CSS 7% Rendering 6% Script Parsing & Compilation 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 266ms | 6ms | 0ms | 1st |
| https://www.miglioreroma.com/ | 256ms | 21ms | 4ms | 3rd |
| https://www.miglioreroma.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 130ms | 107ms | 9ms | 3rd |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
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.
CCompression AlgorithmActionMain response served uncompressedREVIEW
Compression Algorithm
ActionMain response served uncompressed
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.
BMain HTML Cache-ControlMain HTML max-age=3600 (~60min)REVIEW
Main HTML Cache-Control
Main HTML max-age=3600 (~60min)
Main HTML max-age=3600 (~60min)
Info::
Main HTML cached for 60 minutes -- mild staleness risk
Got: max-age=3600
BJavaScript Blocking1 JS blocking issue(s) detectedREVIEW
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
11 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.
A+Page Weight Budget627 KB transferred, 36 requestsPASS
Page Weight Budget
627 KB transferred, 36 requests
627 KB transferred, 36 requests
Info::
Page weighs 867 KB (627 KB transferred)
Info::
36 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
627 KB transferred
36 requests
0.13 g CO2 per page load
Images 509.1 KiB 81%
JavaScript 57.6 KiB 9%
CSS 33.7 KiB 5%
Fonts 13.7 KiB 2%
HTML 12.4 KiB 2%
Other 1.1 KiB 0%
0 2.4 MB 4.9 MB
Under budget
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font Loading1 fonts (14 KB)PASS
Font Loading
1 fonts (14 KB)
1 fonts (14 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
1
14 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
x-font-woff;charset=utf... woff swap
Size 14 KB
Load time 25 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
- 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 ~4 KB and ~8 ms
A+JS Bundles13 scripts, 0 KB unusedPASS
JS Bundles
13 scripts, 0 KB unused
13 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.miglioreroma.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 29 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 | 5 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-content/themes/adventurous/js/html5.min.js?ver=3.7.3 | 1 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-content/themes/adventurous/js/selectivizr.min.js?ver=20130114 | 2 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-includes/js/dist/hooks.min.js?ver=7496969728ca0f95732d | 2 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-includes/js/dist/i18n.min.js?ver=781d11515ad3d91786ec | 3 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-content/plugins/contact-form-7/includes/swv/js/index.js?ver=6.1.6 | 3 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-content/plugins/contact-form-7/includes/js/index.js?ver=6.1.6 | 4 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-content/plugins/ds-cf7-math-captcha/assets/js/script-min.js?ver=4.0 | 1 KB | — | ✓ | 3rd |
| https://www.miglioreroma.com/wp-content/themes/adventurous/js/adventurous-custom.min.js?ver=20241210-175238 | 1 KB | — | ✓ | 3rd |
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server-Timing Observability2 Server-Timing entries advertisedPASS
Server-Timing Observability
2 Server-Timing entries advertised
2 Server-Timing entries advertised
Info::
Server-Timing header advertises 2 timing entries
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding,Cookie
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.
APage Weight Inventory36 resources · 627 KB · 0 KB savings availablePASS
Page Weight Inventory
36 resources · 627 KB · 0 KB savings available
36 resources · 627 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 627 KB
Warning::
35 third-party resources (100% of weight)
36 resources · 627.4 KiB · 35 third-party Within 1MB page-weight target
Image 81% · 509.9 KiB
JavaScript 9% · 57.6 KiB
CSS 5% · 33.7 KiB
Font 2% · 13.7 KiB
Document 2% · 12.7 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 36 resources | 627.4 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
CSS Performance Depth
1 CSS depth issue(s) detected
1 CSS depth issue(s) detected
Warning::
8 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.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Combell
AHTTP Cachingmax-age=3600 (1 hour)PASS
HTTP Caching
max-age=3600 (1 hour)
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
max-age=3600
| Directive | Value | Meaning |
|---|---|---|
| max-age | 3600 | Cache for 1 hour |
Effective TTL: 3600 seconds
Network Waterfall36 requests over 2073msINFO
Network Waterfall
36 requests over 2073ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
59% of JavaScript execution is third-party
First-party Third-party 386ms · 42KB · €4/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.miglioreroma.com www.miglioreroma.com | Other | 256ms | 12 KB | — | €3/mo | Costly |
www.miglioreroma.com www.miglioreroma.com | Other | 130ms | 29 KB | — | €1/mo | Optional |
www.miglioreroma.com
Other
Execution 256ms
Transfer 12 KB
Monthly Cost €3/mo
www.miglioreroma.com
Other
Execution 130ms
Transfer 29 KB
Monthly Cost €1/mo
These scripts may cost more than they're worth
- www.miglioreroma.com adds 256ms and costs ~€3/month
59% of JavaScript execution time comes from third-party scripts.
Why this matters
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
www.miglioreroma.com takes 256ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Image Optimization22 images, 201 KB total, 71 KB wastedINFO
Image Optimization
22 images, 201 KB total, 71 KB wasted
Image Optimization Audit
Total Images
22
Total Size
201 KB
Oversized
2
Wasted
71 KB
1 missing dimensions
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.