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.
689 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
941 ms
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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
689 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
941 ms
Page Load Progression
FPage Weight BudgetAction4.7 MB transferred, 45 requestsFIX
DThird-Party ImpactAction91% third-party, 0 ms blockingFIX
DPage Weight InventoryAction45 resources · 4.7 MB · 31 KB savings availableFIX
~30.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 45 resources | 4.7 MiB | ||||||
BImage Optimization9 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
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BHTTP Cachingno-cacheREVIEW
no-cache
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost294ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 144ms | 52ms | 0ms | 1st |
| https://simplestapi.com/ | 78ms | 3ms | 0ms | 1st |
| https://simplestapi.com/_app/immutable/chunks/eOyOkykq.js | 72ms | 63ms | 0ms | 1st |
A+Font LoadingNo web fonts (system fonts)PASS
A+JS Bundles29 scripts, 31 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://simplestapi.com/_app/immutable/chunks/e8SGeeuY.js | 34 KB | 31 KB (92%) | ✓ | 1st |
| https://simplestapi.com/_app/immutable/nodes/3.C9b4myT0.js | 16 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/chunks/bsJCZSQ-2.js | 16 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/entry/app.lnTRp_tl.js | 3 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/chunks/kNaey6uv.js | 1 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/chunks/C97lKWOR.js | 11 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/nodes/0.CDH3PGjV.js | 4 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/chunks/AvTMlSI3.js | 11 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/chunks/CYumCM0U.js | 1 KB | — | ✓ | 1st |
| https://simplestapi.com/_app/immutable/chunks/BxZ4DQ1j.js | 4 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
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 uses no-cache -- safe revalidate-on-request policyPASS
A+Server Response Intelligence2 server-response signal(s) 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 Waterfall45 requests over 583msINFO
Image Optimization33 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
33
Total Size
0 KB
Oversized
1