Performance
· 22 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.
587 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.42 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.
0.004
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
587 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.
1.43 s
Page Load Progression
BJS Bundles30 scripts, 130 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://studyguidemaker.net/_next/static/chunks/5af6c7058cbd4380.js | 68 KB | 56 KB (82%) | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/b9b9bb0b2d1bc7a4.js | 59 KB | 50 KB (90%) | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/0d65ce108889130a.js | 71 KB | 24 KB (35%) | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/e767791ab1bb9364.js | 8 KB | — | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/c91e119b5b856c2f.js | 30 KB | — | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/turbopack-23477a1ed14466e6.js | 5 KB | — | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/48da1cbbd4d1a93d.js | 1 KB | — | ✓ | 1st |
| https://umami.bestvid.net/script.js | 3 KB | — | ✓ | 3rd |
| https://studyguidemaker.net/_next/static/chunks/8f865f3963f525d3.js | 3 KB | — | ✓ | 1st |
| https://studyguidemaker.net/_next/static/chunks/58e44dda92920413.js | 12 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
CMain HTML Cache-ControlActionMain HTML max-age=14400 (~240min) is aggressiveREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
APage Weight Budget786 KB transferred, 58 requestsPASS
A+Third-Party Impact3% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization2 images, 0 KB saveablePASS
A+JS Execution Cost459ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://studyguidemaker.net/_next/static/chunks/0d65ce108889130a.js | 195ms | 187ms | 5ms | 1st |
| https://studyguidemaker.net/ | 171ms | 11ms | 14ms | 1st |
| Unattributable | 93ms | 9ms | 0ms | 1st |
A+Font Loading3 fonts (119 KB)PASS
Web fonts
3
119 KB total
Render-blocking
0
of 3
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+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory58 resources · 786 KB · 130 KB savings availablePASS
~129.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 58 resources | 785.5 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
A+HTTP Cachingmax-age=14400 (4 hours)PASS
public, max-age=14400, s-maxage=3600
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 14400 | Cache for 4 hours |
| s-maxage | 3600 | CDN caches for 1 hour |
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall58 requests over 2916msINFO
Image Optimization8 images, 45 KB total, 39 KB wastedINFO
Image Optimization Audit
Total Images
8
Total Size
45 KB
Oversized
2
Wasted
39 KB