Performance
· 23 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.
1.38 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.17 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
43 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.046
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.77 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.
4.48 s
Page Load Progression
FPage Weight BudgetAction5.0 MB transferred, 98 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
DJS BundlesAction26 scripts, 434 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://code.tidio.co/widget-v4/1_446_0/static/js/widget.1655cf9d59875b946237.js | 215 KB | 102 KB (47%) | ✓ | 3rd |
| https://code.tidio.co/widget-v4/1_446_0/static/js/chunk-WidgetIframe-1655cf9d59875b946237.js | 147 KB | 77 KB (52%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-1234567890&cx=c>m=4e67m0 | 145 KB | 65 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WR3PG2DZ | 128 KB | 59 KB (46%) | ✓ | 3rd |
| https://connect.facebook.net/signals/config/1233797774720851?v=2.9.361&r=stable&domain=www.trenzobd.com&optin_meta_enabled_capi=true&hme=eec000113e1e9f56e9fc6cdeb39d59ad805f76a48c77cf3d5c028dcf3b38ee7c&ex_m=108%2C209%2C159%2C22%2C73%2C74%2C150%2C69%2C68%2C11%2C168%2C93%2C16%2C142%2C131%2C39%2C76%2C81%2C138%2C164%2C170%2C26%2C27%2C28%2C30%2C48%2C151%2C78%2C116%2C18%2C20%2C44%2C40%2C42%2C41%2C86%2C95%2C99%2C114%2C149%2C152%2C46%2C115%2C24%2C21%2C123%2C70%2C36%2C154%2C153%2C155%2C146%2C144%2C25%2C35%2C59%2C113%2C166%2C71%2C17%2C157%2C118%2C84%2C67%2C19%2C88%2C89%2C120%2C87%2C140%2C139%2C143%2C100%2C165%2C34%2C49%2C117%2C47%2C8%2C4%2C5%2C7%2C6%2C3%2C94%2C105%2C171%2C176%2C223%2C75%2C236%2C235%2C234%2C23%2C33%2C55%2C107%2C61%2C10%2C64%2C101%2C102%2C103%2C109%2C134%2C31%2C29%2C136%2C137%2C133%2C132%2C160%2C77%2C163%2C161%2C162%2C50%2C60%2C127%2C15%2C167%2C45%2C281%2C282%2C280%2C295%2C311%2C216%2C205%2C62%2C206%2C204%2C314%2C305%2C52%2C217%2C111%2C135%2C83%2C125%2C54%2C124%2C130%2C129%2C58%2C65%2C63%2C156%2C79%2C80%2C119%2C37%2C32%2C53%2C56%2C104%2C169%2C1%2C128%2C14%2C126%2C12%2C2%2C57%2C96%2C66%2C122%2C92%2C91%2C172%2C173%2C97%2C98%2C9%2C106%2C51%2C147%2C90%2C82%2C72%2C121%2C110%2C43%2C148%2C0%2C85%2C141%2C145%2C158%2C38%2C112%2C13%2C174 | 153 KB | 48 KB (32%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 103 KB | 34 KB (33%) | ✓ | 3rd |
| https://capi-automation.s3.us-east-2.amazonaws.com/public/client_js/capiParamBuilder/clientParamBuilder.bundle.js | 63 KB | 25 KB (41%) | ✓ | 3rd |
| https://www.trenzobd.com/_next/static/chunks/2xsgy40u2cpyp.js | 70 KB | 23 KB (33%) | ✓ | 1st |
| https://www.trenzobd.com/_next/static/chunks/turbopack-40_ykx4p0zed4.js | 5 KB | — | ✓ | 1st |
| https://code.tidio.co/widget-v4/1_446_0/static/js/render.1655cf9d59875b946237.js | 3 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 InventoryAction98 resources · 5.0 MB · 434 KB savings availableFIX
~433.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 98 resources | 5.0 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
private, no-cache, no-store, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
CImage OptimizationAction30 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
CJS Execution CostAction1352ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.trenzobd.com/_next/static/chunks/2xsgy40u2cpyp.js | 347ms | 260ms | 7ms | 1st |
| https://www.trenzobd.com/ | 242ms | 4ms | 5ms | 1st |
| Unattributable | 206ms | 10ms | 0ms | 1st |
| https://code.tidio.co/widget-v4/1_446_0/static/js/widget.1655cf9d59875b946237.js | 145ms | 93ms | 19ms | 3rd |
| https://connect.facebook.net/signals/config/1233797774720851?v=2.9.361&r=stable&domain=www.trenzobd.com&optin_meta_enabled_capi=true&hme=eec000113e1e9f56e9fc6cdeb39d59ad805f76a48c77cf3d5c028dcf3b38ee7c&ex_m=108%2C209%2C159%2C22%2C73%2C74%2C150%2C69%2C68%2C11%2C168%2C93%2C16%2C142%2C131%2C39%2C76%2C81%2C138%2C164%2C170%2C26%2C27%2C28%2C30%2C48%2C151%2C78%2C116%2C18%2C20%2C44%2C40%2C42%2C41%2C86%2C95%2C99%2C114%2C149%2C152%2C46%2C115%2C24%2C21%2C123%2C70%2C36%2C154%2C153%2C155%2C146%2C144%2C25%2C35%2C59%2C113%2C166%2C71%2C17%2C157%2C118%2C84%2C67%2C19%2C88%2C89%2C120%2C87%2C140%2C139%2C143%2C100%2C165%2C34%2C49%2C117%2C47%2C8%2C4%2C5%2C7%2C6%2C3%2C94%2C105%2C171%2C176%2C223%2C75%2C236%2C235%2C234%2C23%2C33%2C55%2C107%2C61%2C10%2C64%2C101%2C102%2C103%2C109%2C134%2C31%2C29%2C136%2C137%2C133%2C132%2C160%2C77%2C163%2C161%2C162%2C50%2C60%2C127%2C15%2C167%2C45%2C281%2C282%2C280%2C295%2C311%2C216%2C205%2C62%2C206%2C204%2C314%2C305%2C52%2C217%2C111%2C135%2C83%2C125%2C54%2C124%2C130%2C129%2C58%2C65%2C63%2C156%2C79%2C80%2C119%2C37%2C32%2C53%2C56%2C104%2C169%2C1%2C128%2C14%2C126%2C12%2C2%2C57%2C96%2C66%2C122%2C92%2C91%2C172%2C173%2C97%2C98%2C9%2C106%2C51%2C147%2C90%2C82%2C72%2C121%2C110%2C43%2C148%2C0%2C85%2C141%2C145%2C158%2C38%2C112%2C13%2C174 | 107ms | 90ms | 16ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 73ms | 64ms | 9ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-1234567890&cx=c>m=4e67m0 | 71ms | 61ms | 8ms | 3rd |
| https://www.trenzobd.com/_next/static/chunks/10uge_6q-_a1i.js | 58ms | 5ms | 2ms | 1st |
| https://www.trenzobd.com/_next/static/chunks/408a7wmrwxntg.js | 53ms | 36ms | 4ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-WR3PG2DZ | 51ms | 43ms | 7ms | 3rd |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
AThird-Party Impact25% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (221 KB)PASS
Web fonts
6
221 KB total
Render-blocking
0
of 6
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 HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Hostinger
Network Waterfall98 requests over 3764msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
code.tidio.co code.tidio.co | Other | 145ms | 215 KB | 47% | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 107ms | 153 KB | 32% | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 73ms | 103 KB | 33% | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 71ms | 145 KB | 45% | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 51ms | 128 KB | 46% | €0/mo | Optional |
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-06-26 — 2026-07-23)
LCP (p75)
2846 ms
69% good
INP (p75)
154 ms
83% good
CLS (p75)
0.010
94% good
FCP (p75)
1778 ms
TTFB (p75)
826 ms
Image Optimization34 images, 1280 KB total, 1156 KB wastedINFO
Image Optimization Audit
Total Images
34
Total Size
1280 KB
Oversized
1
Wasted
1156 KB