Performance
· 15 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.
984 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.01 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
584 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.100
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.70 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.
4.11 s
Page Load Progression
FPage Weight BudgetAction5.2 MB transferred, 181 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
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 ImpactAction99% third-party, 0 ms blockingFIX
DJS Execution CostAction2882ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://s4.bcbits.com/vite/homepage/client/v1/en/entrypoints/HomepageApp.vue_en-Bs7GFktT.js | 1188ms | 1103ms | 1ms | 3rd |
| Unattributable | 817ms | 374ms | 0ms | 3rd |
| https://bandcamp.com/ | 362ms | 5ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=GT-WV86TPST&cx=c>m=4e64f0 | 141ms | 118ms | 21ms | 3rd |
| https://js.stripe.com/basil/stripe.js | 136ms | 80ms | 56ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 114ms | 67ms | 39ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-TKFS52TF | 65ms | 48ms | 16ms | 3rd |
| https://s4.bcbits.com/client-bundle/1/ArtistsLabelsPages_1/salesfeed_js-e18ffbe35a646a356bd88720c02fed40.js | 57ms | 26ms | 0ms | 3rd |
FJS BundlesAction19 scripts, 888 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://js.stripe.com/basil/stripe.js | 221 KB | 161 KB (73%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 157 KB (43%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 157 KB (43%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 157 KB (43%) | ✓ | 3rd |
| https://s4.bcbits.com/vite/homepage/client/v1/en/entrypoints/HomepageApp.vue_en-Bs7GFktT.js | 297 KB | 127 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-WV86TPST&cx=c>m=4e64f0 | 176 KB | 69 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-TKFS52TF | 125 KB | 61 KB (49%) | ✓ | 3rd |
| https://s4.bcbits.com/vite/homepage/client/v1/en/chunks/CookieControl-CWZbookr.js | 1 KB | — | ✓ | 3rd |
| https://s4.bcbits.com/vite/homepage/client/v1/en/chunks/MenuBar-BnqTpUZJ.js | 8 KB | — | ✓ | 3rd |
| https://s4.bcbits.com/vite/homepage/client/v1/en/chunks/CookieControlButton-GXW2HPaa.js | 1 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 InventoryAction181 resources · 5.2 MB · 888 KB savings availableFIX
~887.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 181 resources | 5.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization139 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (34 KB)PASS
Web fonts
1
34 KB total
Render-blocking
0
of 1
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+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Axis12 Ltd
Network Waterfall181 requests over 4168msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
s4.bcbits.com s4.bcbits.com | Other | 1188ms | 297 KB | 43% | €13/mo | Costly |
Unattributable Unattributable | Other | 817ms | 0 KB | — | €9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 141ms | 176 KB | 39% | €2/mo | Optional |
Stripe js.stripe.com | Payment | 136ms | 221 KB | 73% | €1/mo | Essential |
www.gstatic.com www.gstatic.com | Other | 114ms | 0 KB | 43% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 65ms | 125 KB | 49% | €1/mo | Optional |
s4.bcbits.com s4.bcbits.com | Other | 57ms | 3 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- s4.bcbits.com adds 1188ms and costs ~€13/month
- Unattributable adds 817ms and costs ~€9/month
87% 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
s4.bcbits.com takes 1188ms 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
Unattributable takes 817ms 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
73% of Stripe'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