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.
9.07 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
24.98 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
679 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.062
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
12.31 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.
25.34 s
Page Load Progression
FPage Weight BudgetAction5.5 MB transferred, 208 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
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4258ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1058ms | 176ms | 0ms | 1st |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202608180101/pubads_impl.js | 513ms | 371ms | 59ms | 3rd |
| https://assets.asroma.com/prod/MainLayout.15724a197d264584e868.js | 399ms | 73ms | 3ms | 3rd |
| https://cdns.eu1.gigya.com/js/gigya.js?apikey=3_gt294H9QAFy3KB3mMbUm6fhaIUoduC7ltfWeWRJlHuycDJjIgD_DjnCdjlziTe-5&lang=en | 359ms | 308ms | 40ms | 3rd |
| https://www.asroma.com/en | 356ms | 12ms | 5ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 297ms | 181ms | 37ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KX8NQP9 | 266ms | 193ms | 59ms | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/activeview/current/ufs_web_display.js | 226ms | 176ms | 17ms | 3rd |
| https://identity.asroma.com/js/sso.htm?APIKey=3_gt294H9QAFy3KB3mMbUm6fhaIUoduC7ltfWeWRJlHuycDJjIgD_DjnCdjlziTe-5&ssoSegment=&version=next&build=2353&flavor=base&sourceKey=3_gt294H9QAFy3KB3mMbUm6fhaIUoduC7ltfWeWRJlHuycDJjIgD_DjnCdjlziTe-5 | 141ms | 138ms | 0ms | 3rd |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js | 106ms | 95ms | 9ms | 3rd |
Showing top 10 of 18 scripts
FJS BundlesAction68 scripts, 592 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdns.eu1.gigya.com/js/gigya.js?apikey=3_gt294H9QAFy3KB3mMbUm6fhaIUoduC7ltfWeWRJlHuycDJjIgD_DjnCdjlziTe-5&lang=en | 216 KB | 116 KB (54%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202608180101/pubads_impl.js | 203 KB | 113 KB (56%) | ✓ | 3rd |
| https://apis.google.com/_/scs/abc-static/_/js/k=gapi.lb.en.zhTT8Br0Ho8.O/m=client/rt=j/sv=1/d=1/ed=1/rs=AHpOoo-7LeULGjNQZRvhdu3G71akb6JY6A/cb=gapi.loaded_0?le=scs | 109 KB | 80 KB (74%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KX8NQP9 | 178 KB | 80 KB (45%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 128 KB | 69 KB (54%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 79 KB | 50 KB (63%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/activeview/current/ufs_web_display.js | 74 KB | 32 KB (44%) | ✓ | 3rd |
| https://assets.asroma.com/prod/9755.34ccbd75f0018a864862.js | 31 KB | 30 KB (100%) | ✓ | 3rd |
| https://code.jquery.com/jquery-3.6.0.min.js | 31 KB | 21 KB (68%) | ✓ | 3rd |
| https://app3.salesmanago.pl/static/chunk/69.276a1fc75aff22aa13e6.js | 6 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
FPage Weight InventoryAction208 resources · 5.5 MB · 592 KB savings availableFIX
~591.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 208 resources | 5.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction75 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.
Performance issues directly impact user engagement and conversion rates.
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
BResource Hints36 hints, 0 missing preconnectsREVIEW
Current Resource Hints
36 resource hints configured
Each preconnect eagerly opens a TCP+TLS connection. On slow networks or low-end devices, too many parallel connections cause head-of-line blocking and starve the connections that matter for LCP. Trim to the 4-6 highest-value origins (the ones serving render-blocking or LCP resources).
Informational: a labeled value pair from the audit.
preconnect already does the DNS lookup; adding dns-prefetch to the same origin is at best a no-op. Sample: https://www.google-analytics.com, https://www.googletagmanager.com, https://connect.facebook.net (+8 more). Remove the redundant dns-prefetch entries.
Performance issues directly impact user engagement and conversion rates.
The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://connect.facebook.net (preconnect+dns-prefetch), https://www.facebook.com (preconnect+dns-prefetch), https://www.youtube-nocookie.com (preconnect+dns-prefetch) (+8 more).
Performance issues directly impact user engagement and conversion rates.
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading18 fonts (788 KB)PASS
Web fonts
18
788 KB total
Render-blocking
0
of 18
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- 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 ~197 KB and ~394 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall208 requests over 2846msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 513ms | 203 KB | 56% | €8/mo | Costly |
assets.asroma.com assets.asroma.com | Other | 399ms | 6 KB | — | €6/mo | Costly |
cdns.eu1.gigya.com cdns.eu1.gigya.com | Other | 359ms | 216 KB | 54% | €6/mo | Costly |
www.asroma.com www.asroma.com | Other | 356ms | 18 KB | — | €6/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 297ms | 128 KB | 54% | €5/mo | Essential |
Google Tag Manager www.googletagmanager.com | Tag Manager | 266ms | 178 KB | 45% | €4/mo | Costly |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 226ms | 74 KB | 44% | €4/mo | Costly |
identity.asroma.com identity.asroma.com | Other | 141ms | 1 KB | — | €2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 106ms | 37 KB | — | €2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 89ms | 79 KB | 63% | €1/mo | Optional |
apis.google.com apis.google.com | Other | 81ms | 109 KB | 74% | €1/mo | Optional |
identity.asroma.com identity.asroma.com | Other | 79ms | 0 KB | — | €1/mo | Optional |
assets.asroma.com assets.asroma.com | Other | 64ms | 31 KB | 100% | €1/mo | Optional |
app3.salesmanago.pl app3.salesmanago.pl | Other | 62ms | 17 KB | — | €1/mo | Optional |
identity.asroma.com identity.asroma.com | Other | 54ms | 0 KB | — | €1/mo | Optional |
assets.asroma.com assets.asroma.com | Other | 54ms | 3 KB | — | €1/mo | Optional |
assets.asroma.com assets.asroma.com | Other | 51ms | 1 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- securepubads.g.doubleclick.net adds 513ms and costs ~€8/month
- assets.asroma.com adds 399ms and costs ~€6/month
- cdns.eu1.gigya.com adds 359ms and costs ~€6/month
- www.asroma.com adds 356ms and costs ~€6/month
- Google Tag Manager adds 266ms and costs ~€4/month
- pagead2.googlesyndication.com adds 226ms and costs ~€4/month
75% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
securepubads.g.doubleclick.net takes 513ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
56% of securepubads.g.doubleclick.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
assets.asroma.com takes 399ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdns.eu1.gigya.com takes 359ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
54% of cdns.eu1.gigya.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
www.asroma.com takes 356ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
54% of OneTrust's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 266ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
pagead2.googlesyndication.com takes 226ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
63% of Facebook Pixel's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
74% of apis.google.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
100% of assets.asroma.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization165 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
165
Total Size
0 KB
Oversized
9