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.
5.05 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.15 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
530 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.
5.69 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.
8.15 s
Page Load Progression
DJS BundlesAction8 scripts, 255 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://notehand.app/assets/index-sJIST7MY.js | 269 KB | 184 KB (69%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-K0EGZGZFZT | 177 KB | 71 KB (40%) | ✓ | 3rd |
| https://notehand.app/assets/vendor-motion-D_zvdyIk.js | 1 KB | — | ✓ | 1st |
| https://notehand.app/assets/vendor-icons-p8aawUMs.js | 9 KB | — | ✗ | 1st |
| https://notehand.app/assets/vendor-react-DasPH1iO.js | 3 KB | — | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447 | 11 KB | — | ✓ | 3rd |
| https://notehand.app/assets/workbox-window.prod.es5-X279BU3z.js | 4 KB | — | ✓ | 1st |
| https://notehand.app/cdn-cgi/challenge-platform/h/b/scripts/jsd/25e6c66701a0/main.js? | 9 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
BThird-Party Impact54% third-party, 0 ms blockingREVIEW
CJS Execution CostAction1828ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://notehand.app/assets/index-sJIST7MY.js | 696ms | 492ms | 4ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-K0EGZGZFZT | 317ms | 253ms | 58ms | 3rd |
| https://notehand.app/ | 277ms | 40ms | 2ms | 1st |
| https://notehand.app/cdn-cgi/challenge-platform/scripts/jsd/main.js | 276ms | 259ms | 2ms | 1st |
| Unattributable | 262ms | 11ms | 0ms | 1st |
BPage Weight Inventory23 resources · 685 KB · 255 KB savings availableREVIEW
~255.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 23 resources | 684.7 KiB | ||||||
BHTTP Cachingpublic,max-age=0,must-revalidateREVIEW
public,max-age=0,must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Page Weight Budget685 KB transferred, 23 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization1 images, 0 KB saveablePASS
A+Font Loading5 fonts (178 KB)PASS
Web fonts
5
178 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+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
A+Server Response Intelligence3 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall23 requests over 1971msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 317ms | 177 KB | 40% | $4/mo | Costly |
These scripts may cost more than they're worth
- Google Tag Manager adds 317ms and costs ~$4/month
Google Tag Manager takes 317ms 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
Image Optimization1 images, 2 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
1
Total Size
2 KB