Performance
· 21 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.
568 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.01 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.083
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.66 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.
1.01 s
Page Load Progression
CJS Execution CostAction1031ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://wrenda.ai/ | 450ms | 1ms | 1ms | 1st |
| https://wrenda.ai/_next/static/chunks/8907-45995d114a02fefe.js | 291ms | 48ms | 2ms | 1st |
| https://wrenda.ai/_next/static/chunks/1255-f6eeefa1c40e51a9.js | 124ms | 112ms | 5ms | 1st |
| https://wrenda.ai/_next/static/chunks/4bd1b696-100b9d70ed4e49c1.js | 108ms | 57ms | 3ms | 1st |
| Unattributable | 58ms | 5ms | 0ms | 1st |
BJS Bundles31 scripts, 117 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://wrenda.ai/_next/static/chunks/9391-37aab21cb983ce8f.js | 78 KB | 59 KB (76%) | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/960-83a13381453a778f.js | 38 KB | 37 KB (100%) | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/8907-45995d114a02fefe.js | 40 KB | 21 KB (54%) | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/app/page-18436ae773ae0fba.js | 26 KB | — | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/app/(marketing)/use-cases/page-ba7fb9c284bc410b.js | 8 KB | — | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/4237-dc7adba3662b0cac.js | 3 KB | — | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/main-app-1e7a3f5fd1f3f54d.js | 1 KB | — | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/app/layout-9d8a15f3cda52123.js | 4 KB | — | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/2619-04bc32f026a0d946.js | 4 KB | — | ✓ | 1st |
| https://wrenda.ai/_next/static/chunks/app/not-found-0d0e7f7421b38da3.js | 1 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
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
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 Budget648 KB transferred, 50 requestsPASS
A+Third-Party ImpactNo third-party resourcesPASS
A+Text CompressionAll text resources are compressedPASS
A+Image OptimizationNo images on this pagePASS
A+Font Loading7 fonts (147 KB)PASS
Web fonts
7
147 KB total
Render-blocking
0
of 7
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+Document CompressionDocument response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
AServer Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory50 resources · 648 KB · 117 KB savings availablePASS
~117.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 50 resources | 648.0 KiB | ||||||