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.
3.65 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.84 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.61 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.006
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.38 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.
14.26 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction7185ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdn.prod.website-files.com/6340630bc206e3e9f1770198/js/unobravo-staging.schunk.96734fea22672569.js | 1668ms | 166ms | 65ms | 3rd |
| https://www.unobravo.com/ | 1532ms | 172ms | 11ms | 3rd |
| Unattributable | 885ms | 69ms | 0ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-WR5DV3R>m_auth=K0UmcykQv9-9gRFBKufsNg>m_preview=env-1>m_cookies_win=x | 600ms | 457ms | 89ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-703689512&cx=c>m=4e6781 | 533ms | 467ms | 61ms | 3rd |
| https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.100.0/core-it.js | 357ms | 229ms | 78ms | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MTA2MWE1OWMwMQ.js | 356ms | 273ms | 76ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-1234&cx=c>m=4e6781 | 276ms | 189ms | 85ms | 3rd |
| https://cdn.prod.website-files.com/6340630bc206e3e9f1770198/js/unobravo-staging.114b2c7f.5f0f6f407efb275e.js | 273ms | 264ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-K6YJ7HYPQM&cx=c>m=4e6781 | 273ms | 201ms | 69ms | 3rd |
Showing top 10 of 14 scripts
DJS BundlesAction20 scripts, 398 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-K6YJ7HYPQM&cx=c>m=4e6781 | 172 KB | 71 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-1234&cx=c>m=4e6781 | 143 KB | 65 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-703689512&cx=c>m=4e6781 | 150 KB | 64 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WR5DV3R>m_auth=K0UmcykQv9-9gRFBKufsNg>m_preview=env-1>m_cookies_win=x | 184 KB | 63 KB (34%) | ✓ | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MTA2MWE1OWMwMQ.js | 114 KB | 56 KB (50%) | ✓ | 3rd |
| https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.100.0/core-it.js | 111 KB | 31 KB (50%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js | 44 KB | 25 KB (58%) | ✓ | 3rd |
| https://code.jquery.com/jquery-3.7.1.min.js | 30 KB | 22 KB (75%) | ✓ | 3rd |
| https://cdn.prod.website-files.com/6340630bc206e3e9f1770198/js/unobravo-staging.114b2c7f.5f0f6f407efb275e.js | 1 KB | — | ✓ | 3rd |
| https://cdn.iubenda.com/cs/stable/iubenda_cs.js | 2 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
DPage Weight InventoryAction78 resources · 1.7 MB · 398 KB savings availableFIX
~397.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 78 resources | 1.7 MiB | ||||||
CPage Weight BudgetAction1.7 MB transferred, 78 requestsREVIEW
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
CImage OptimizationAction36 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.
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
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlCache-Control present but without max-ageREVIEW
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
BHTTP CachingprivateREVIEW
private
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (116 KB)PASS
Web fonts
4
116 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 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+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
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
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
Network Waterfall78 requests over 2262msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.prod.website-files.com cdn.prod.website-files.com | Other | 1668ms | 63 KB | — | €18/mo | Costly |
www.unobravo.com www.unobravo.com | Other | 1532ms | 59 KB | — | €17/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 600ms | 184 KB | 34% | €7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 533ms | 150 KB | 43% | €6/mo | Costly |
Iubenda cdn.iubenda.com | Consent | 357ms | 111 KB | 50% | €4/mo | Essential |
analytics.tiktok.com analytics.tiktok.com | Other | 356ms | 114 KB | 50% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 276ms | 143 KB | 45% | €3/mo | Costly |
cdn.prod.website-files.com cdn.prod.website-files.com | Other | 273ms | 1 KB | — | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 273ms | 172 KB | 41% | €3/mo | Costly |
jsDelivr cdn.jsdelivr.net | CDN | 182ms | 44 KB | 58% | €2/mo | Optional |
d3e54v103j8qbb.cloudfront.net d3e54v103j8qbb.cloudfront.net | Other | 126ms | 30 KB | — | €1/mo | Optional |
code.jquery.com code.jquery.com | Other | 64ms | 30 KB | 75% | €1/mo | Optional |
analytics.tiktok.com analytics.tiktok.com | Other | 60ms | 39 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- cdn.prod.website-files.com adds 1668ms and costs ~€18/month
- www.unobravo.com adds 1532ms and costs ~€17/month
- Google Tag Manager adds 600ms and costs ~€7/month
- Google Tag Manager adds 533ms and costs ~€6/month
- analytics.tiktok.com adds 356ms and costs ~€4/month
- Google Tag Manager adds 276ms and costs ~€3/month
- cdn.prod.website-files.com adds 273ms and costs ~€3/month
- Google Tag Manager adds 273ms and costs ~€3/month
88% 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
cdn.prod.website-files.com takes 1668ms 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
www.unobravo.com takes 1532ms 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
Google Tag Manager takes 600ms 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
Google Tag Manager takes 533ms 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
50% of Iubenda'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
analytics.tiktok.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
Google Tag Manager takes 276ms 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
cdn.prod.website-files.com takes 273ms 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
Google Tag Manager takes 273ms 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
58% of jsDelivr'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
75% of code.jquery.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 Optimization146 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
146
Total Size
0 KB
Oversized
1