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.
2.41 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.97 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
224 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.
3.23 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.
4.01 s
Page Load Progression
DPage Weight BudgetAction2.2 MB transferred, 154 requestsFIX
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
DJS Execution CostAction2208ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 567ms | 149ms | 0ms | 3rd |
| https://public.bnbstatic.com/unpkg/vendor/vendor.umd.0.0.13.production.min.18.2.0.js | 563ms | 525ms | 4ms | 3rd |
| https://www.binance.info/en | 462ms | 20ms | 7ms | 3rd |
| https://bin.bnbstatic.com/static/runtime/sentry/7.38.0/bundle.es5.min.js | 171ms | 33ms | 2ms | 3rd |
| https://bin.bnbstatic.com/static/main.ad736b3e.js | 120ms | 92ms | 19ms | 3rd |
| https://bin.bnbstatic.com/static/mfa-ui.6b6ce69.js | 104ms | 101ms | 3ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202409.2.0/otBannerSdk.js | 81ms | 50ms | 14ms | 3rd |
| https://public.bnbstatic.com/unpkg/common-widget/data@1.4.103.min.js | 76ms | 65ms | 10ms | 3rd |
| https://public.bnbstatic.com/unpkg/common-widget/common@1.4.103.min.js | 64ms | 54ms | 10ms | 3rd |
FJS BundlesAction44 scripts, 1.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://bin.bnbstatic.com/static/mfa-ui.6b6ce69.js | 0 KB | 329 KB (61%) | ✓ | 3rd |
| https://bin.bnbstatic.com/static/mfa-ui.6b6ce69.js | 544 KB | 329 KB (61%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client | 96 KB | 72 KB (75%) | ✓ | 3rd |
| https://bin.bnbstatic.com/static/main.ad736b3e.js | 165 KB | 70 KB (42%) | ✓ | 3rd |
| https://public.bnbstatic.com/unpkg/common-widget/vendor@1.4.103.min.js | 108 KB | 67 KB (62%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202409.2.0/otBannerSdk.js | 112 KB | 61 KB (54%) | ✓ | 3rd |
| https://public.bnbstatic.com/unpkg/common-widget/common@1.4.103.min.js | 50 KB | 42 KB (84%) | ✓ | 3rd |
| https://bin.bnbstatic.com/static/chunks/page-8e28.0ef3e4d5.js | 68 KB | 37 KB (55%) | ✓ | 3rd |
| https://bin.bnbstatic.com/static/chunks/336.00e335fe.js | 61 KB | 32 KB (53%) | ✓ | 3rd |
| https://public.bnbstatic.com/unpkg/common-widget/extension@1.4.103.min.js | 37 KB | 23 KB (62%) | ✓ | 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 InventoryAction154 resources · 2.2 MB · 1.1 MB savings availableFIX
~1.1 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 154 resources | 2.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization25 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
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 Loading4 fonts (258 KB)PASS
Web fonts
4
258 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 HintsNo optimization neededPASS
Network Waterfall154 requests over 6819msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 567ms | 0 KB | — | €6/mo | Costly |
public.bnbstatic.com public.bnbstatic.com | Other | 563ms | 0 KB | — | €6/mo | Costly |
www.binance.info www.binance.info | Other | 462ms | 82 KB | — | €5/mo | Costly |
bin.bnbstatic.com bin.bnbstatic.com | Other | 171ms | 20 KB | — | €2/mo | Optional |
bin.bnbstatic.com bin.bnbstatic.com | Other | 120ms | 165 KB | 42% | €1/mo | Optional |
bin.bnbstatic.com bin.bnbstatic.com | Other | 104ms | 0 KB | 61% | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 81ms | 112 KB | 54% | €1/mo | Essential |
public.bnbstatic.com public.bnbstatic.com | Other | 76ms | 38 KB | 58% | €1/mo | Optional |
public.bnbstatic.com public.bnbstatic.com | Other | 64ms | 50 KB | 84% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 567ms and costs ~€6/month
- public.bnbstatic.com adds 563ms and costs ~€6/month
- www.binance.info adds 462ms and costs ~€5/month
100% 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
Unattributable takes 567ms 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
public.bnbstatic.com takes 563ms 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.binance.info takes 462ms 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
61% of bin.bnbstatic.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
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
58% of public.bnbstatic.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
84% of public.bnbstatic.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