Performance
· 17 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.
15.12 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
26.33 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.46 s
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.
15.12 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.
26.73 s
Page Load Progression
FPage Weight BudgetAction4.0 MB transferred, 101 requestsFIX
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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction60% third-party, 0 ms blockingFIX
FJS Execution CostAction8106ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://myanimelist.net/static/assets/js/sp/all-625d99e851.js | 2103ms | 987ms | 262ms | 1st |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 1175ms | 975ms | 157ms | 3rd |
| https://myanimelist.net/ | 915ms | 165ms | 6ms | 1st |
| Unattributable | 831ms | 36ms | 0ms | 3rd |
| https://cmp.inmobi.com/tcfv2/cmp2.js?referer=myanimelist.net | 696ms | 467ms | 76ms | 3rd |
| https://cmp.inmobi.com/tcfv2/61/cmp2ui-en.js | 682ms | 481ms | 96ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WL4QW3G | 664ms | 543ms | 55ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-26FEP9527K&cx=c>m=4e64h1 | 641ms | 564ms | 73ms | 3rd |
| https://btloader.com/tag?o=5110059113906176&upapi=true | 180ms | 154ms | 14ms | 3rd |
| https://myanimelist.net/static/assets/css/sp/style-43e9e4873d.css | 126ms | 0ms | 0ms | 1st |
Showing top 10 of 11 scripts
FJS BundlesAction15 scripts, 1.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://myanimelist.net/static/assets/js/sp/all-625d99e851.js | 490 KB | 319 KB (65%) | ✓ | 1st |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://cmp.inmobi.com/tcfv2/cmp2.js?referer=myanimelist.net | 134 KB | 66 KB (50%) | ✓ | 3rd |
| https://cmp.inmobi.com/tcfv2/61/cmp2ui-en.js | 125 KB | 60 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-26FEP9527K&cx=c>m=4e64h1 | 174 KB | 59 KB (34%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WL4QW3G | 138 KB | 59 KB (43%) | ✓ | 3rd |
| https://btloader.com/tag?o=5110059113906176&upapi=true | 31 KB | — | ✓ | 3rd |
| https://myanimelist.net/static/assets/js/sp/menu-3eb7f26a55.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
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
FPage Weight InventoryAction101 resources · 4.0 MB · 1.1 MB savings availableFIX
~1.1 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 101 resources | 4.0 MiB | ||||||
CImage OptimizationAction33 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
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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingno-cacheREVIEW
no-cache
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (912 KB)PASS
Web fonts
4
912 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~439 KB and ~878 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints6 hints, 0 missing preconnectsPASS
Current Resource Hints
6 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall101 requests over 4856msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gstatic.com www.gstatic.com | Other | 1175ms | 0 KB | 49% | ¥1624/mo | Costly |
Unattributable Unattributable | Other | 831ms | 0 KB | — | ¥1148/mo | Costly |
cmp.inmobi.com cmp.inmobi.com | Other | 696ms | 134 KB | 50% | ¥961/mo | Costly |
cmp.inmobi.com cmp.inmobi.com | Other | 682ms | 125 KB | 48% | ¥943/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 664ms | 138 KB | 43% | ¥918/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 641ms | 174 KB | 34% | ¥885/mo | Costly |
btloader.com btloader.com | Other | 180ms | 31 KB | — | ¥248/mo | Costly |
These scripts may cost more than they're worth
- www.gstatic.com adds 1175ms and costs ~¥1624/month
- Unattributable adds 831ms and costs ~¥1148/month
- cmp.inmobi.com adds 696ms and costs ~¥961/month
- cmp.inmobi.com adds 682ms and costs ~¥943/month
- Google Tag Manager adds 664ms and costs ~¥918/month
- Google Tag Manager adds 641ms and costs ~¥885/month
- btloader.com adds 180ms and costs ~¥248/month
60% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
www.gstatic.com takes 1175ms 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
Unattributable takes 831ms 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
cmp.inmobi.com takes 696ms 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
cmp.inmobi.com takes 682ms 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
Google Tag Manager takes 664ms 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
Google Tag Manager takes 641ms 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
btloader.com takes 180ms 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