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.
997 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.47 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
390 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.11 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.
3.30 s
Page Load Progression
FPage Weight BudgetAction3.3 MB transferred, 125 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
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
FJS Execution CostAction4430ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://metamask.io/_next/static/chunks/584bde89-9595039859cc31b6.js | 1835ms | 112ms | 1ms | 1st |
| https://metamask.io/_next/static/chunks/4816-055dd6d610c3074c.js | 776ms | 406ms | 4ms | 1st |
| https://metamask.io/_next/static/chunks/88abe5af.0706f908dc317b11.js | 553ms | 547ms | 5ms | 1st |
| Unattributable | 312ms | 105ms | 0ms | 3rd |
| https://metamask.io/ | 228ms | 18ms | 11ms | 1st |
| https://metamask.io/_next/static/chunks/f9a8f296-819ec61d008a0957.js | 154ms | 151ms | 4ms | 1st |
| https://metamask.io/_next/static/chunks/8709-1d5bafb735aee5ae.js | 143ms | 118ms | 2ms | 1st |
| https://cmp.osano.com/AzZMxHTbQDOQD8c1J/c7397bc9-ede0-4a67-8e99-ac20272a6829/osano.js | 117ms | 109ms | 4ms | 3rd |
| https://metamask.io/_next/static/chunks/2681-1be89bb801254265.js | 99ms | 85ms | 14ms | 1st |
| https://metamask.io/_next/static/chunks/4112-851ba49e44758412.js | 76ms | 74ms | 2ms | 1st |
Showing top 10 of 12 scripts
FJS BundlesAction39 scripts, 531 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://metamask.io/_next/static/chunks/5188-f971dfee31d6ef93.js | 184 KB | 164 KB (90%) | ✓ | 1st |
| https://metamask.io/_next/static/chunks/2681-1be89bb801254265.js | 156 KB | 110 KB (70%) | ✓ | 1st |
| https://metamask.io/_next/static/chunks/e8867c6f-d571532695aaa15c.js | 100 KB | 76 KB (76%) | ✓ | 1st |
| https://js.hsforms.net/forms/v2.js | 194 KB | 73 KB (39%) | ✓ | 3rd |
| https://metamask.io/_next/static/chunks/2304-4b2bfe342f27e873.js | 66 KB | 44 KB (67%) | ✓ | 1st |
| https://metamask.io/_next/static/chunks/88abe5af.0706f908dc317b11.js | 38 KB | 36 KB (95%) | ✓ | 1st |
| https://metamask.io/_next/static/chunks/4816-055dd6d610c3074c.js | 59 KB | 27 KB (46%) | ✓ | 1st |
| https://metamask.io/_next/static/chunks/8975-9a2bd08b36ca935d.js | 18 KB | — | ✓ | 1st |
| https://metamask.io/_next/static/chunks/1187-bd1ffff64d6c4e61.js | 12 KB | — | ✓ | 1st |
| https://metamask.io/_next/static/chunks/app/layout-17533caba561c28f.js | 2 KB | — | ✓ | 1st |
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 InventoryAction125 resources · 3.3 MB · 531 KB savings availableFIX
~530.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 125 resources | 3.3 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 |
BImage Optimization38 images, 0 KB saveableREVIEW
AThird-Party Impact37% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (184 KB)PASS
Web fonts
5
184 KB total
Render-blocking
0
of 5
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: Cloudflare
Network Waterfall125 requests over 2856msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 312ms | 0 KB | — | $4/mo | Costly |
cmp.osano.com cmp.osano.com | Other | 117ms | 43 KB | — | $2/mo | Optional |
js.hsforms.net js.hsforms.net | Other | 60ms | 194 KB | 39% | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 312ms and costs ~$4/month
Unattributable takes 312ms 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