Performance
· 23 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.
912 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.01 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.
0.007
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.56 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.
2.02 s
Page Load Progression
FPage Weight BudgetAction3.1 MB transferred, 74 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization28 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
CJS Execution CostAction1014ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://moe.best/ | 466ms | 3ms | 2ms | 1st |
| https://moe.best/usr/themes/handsome/assets/js/commentTyping.js | 257ms | 29ms | 0ms | 1st |
| Unattributable | 185ms | 21ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=UA-105785108-1 | 54ms | 44ms | 9ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-RCJMCHRD6E&cx=c>m=4e67m0 | 52ms | 39ms | 12ms | 3rd |
CJS BundlesAction19 scripts, 173 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-RCJMCHRD6E&cx=c>m=4e67m0 | 151 KB | 68 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-105785108-1 | 129 KB | 65 KB (50%) | ✓ | 3rd |
| https://code.bdstatic.com/npm/mathjax@2.7.9/config/TeX-AMS-MML_SVG.js | 72 KB | 40 KB (55%) | ✓ | 3rd |
| https://moe.best/usr/themes/handsome/assets/js/function.min.js?v=5.0.020181231301 | 31 KB | — | ✓ | 1st |
| https://moe.best/usr/themes/handsome/assets/js/handsome.js?v=1.6.1 | 1 KB | — | ✓ | 1st |
| https://moe.best/usr/themes/handsome/assets/js/features/SmoothScroll.min.js?d=1552899010706 | 2 KB | — | ✓ | 1st |
| https://moe.best/usr/themes/handsome/assets/js/features/jquery.fancybox.min.js?v=5.0.020181231301 | 19 KB | — | ✓ | 1st |
| https://moe.best/usr/themes/handsome/assets/js/features/OwO.min.js?v=5.0.020181231301 | 2 KB | — | ✓ | 1st |
| https://code.bdstatic.com/npm/jquery@2.2.4/dist/jquery.min.js | 31 KB | — | ✓ | 3rd |
| https://moe.best/usr/themes/handsome/assets/js/core.min.js?v=5.0.020181231301.2 | 6 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction74 resources · 3.1 MB · 173 KB savings availableREVIEW
~172.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 74 resources | 3.1 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact19% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (163 KB)PASS
Web fonts
6
163 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~21 KB and ~42 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Network Waterfall74 requests over 2338msINFO
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 | 54ms | 129 KB | 50% | CA$1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 52ms | 151 KB | 45% | CA$1/mo | Optional |
50% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-06-24 — 2026-07-21)
LCP (p75)
2869 ms
67% good
INP (p75)
45 ms
98% good
CLS (p75)
0.030
96% good
FCP (p75)
2429 ms
TTFB (p75)
1201 ms
Image Optimization20 images, 489 KB total, 442 KB wastedINFO
Image Optimization Audit
Total Images
20
Total Size
489 KB
Oversized
2
Wasted
442 KB