Performance
· 28 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.
1.86 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.80 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
553 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.
6.18 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.
6.80 s
Page Load Progression
DThird-Party ImpactAction72% third-party, 0 ms blockingFIX
BPage Weight Budget1.2 MB transferred, 58 requestsREVIEW
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
CJS Execution CostAction1916ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://91crdjai.com/static/web/js/lib/web-sdk-v1.2.0.js?v=20261022003 | 507ms | 431ms | 9ms | 1st |
| https://91crdjai.com/static/web/js/drama-shell.js?v=20261022003 | 321ms | 13ms | 3ms | 1st |
| Unattributable | 295ms | 29ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-NRW7S9SLR5 | 253ms | 210ms | 41ms | 3rd |
| https://91crdjai.com/ | 231ms | 14ms | 4ms | 1st |
| https://mc.yandex.ru/metrika/tag.js?id=113563465 | 173ms | 149ms | 16ms | 3rd |
| https://91crdjai.com/static/web/js/lib/ssp-core-v0.0.4-20260827.js | 71ms | 64ms | 0ms | 1st |
| https://91crdjai.com/static/web/js/web_tracker_v18.js?v=20261022003 | 64ms | 59ms | 5ms | 1st |
CJS BundlesAction21 scripts, 157 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-NRW7S9SLR5 | 177 KB | 74 KB (42%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js?id=113563465 | 64 KB | 33 KB (51%) | ✓ | 3rd |
| https://91crdjai.com/static/web/js/lib/ssp-core-v0.0.4-20260827.js | 48 KB | 28 KB (58%) | ✓ | 1st |
| https://91crdjai.com/static/web/js/lib/jquery.js?v=20261022003 | 32 KB | 23 KB (72%) | ✓ | 1st |
| https://91crdjai.com/static/web/js/web_tracker_v18.js?v=20261022003 | 27 KB | — | ✓ | 1st |
| https://91crdjai.com/static/web/js/modules/drama-tracking.js?v=20261022003 | 5 KB | — | ✓ | 1st |
| https://91crdjai.com/static/web/js/lib/require.js?v=20261022003 | 8 KB | — | ✓ | 1st |
| https://91crdjai.com/static/web/js/drama-avatar.js?v=20261022003 | 5 KB | — | ✓ | 1st |
| https://91crdjai.com/static/web/js/drama-shell.js?v=20261022003 | 12 KB | — | ✗ | 1st |
| https://analytics.ahrefs.com/analytics.js | 3 KB | — | ✓ | 3rd |
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
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction58 resources · 1.2 MB · 157 KB savings availableREVIEW
~156.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 58 resources | 1.2 MiB | ||||||
BJavaScript Blocking1 JS blocking issue(s) detectedREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
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=60 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
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=60 (1 minute)PASS
public, max-age=60, s-maxage=300
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 60 | Cache for 1 minute |
| s-maxage | 300 | CDN caches for 5 minutes |
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall58 requests over 3658msINFO
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 | 253ms | 177 KB | 42% | ¥12/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 173ms | 64 KB | 51% | ¥9/mo | Optional |
These scripts may cost more than they're worth
- Google Tag Manager adds 253ms and costs ~¥12/month
Google Tag Manager takes 253ms 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
51% of mc.yandex.ru'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 (2026-09-23 — 2026-10-20)
LCP (p75)
1634 ms
86% good
INP (p75)
0 ms
0% good
CLS (p75)
0.000
92% good
FCP (p75)
971 ms
TTFB (p75)
380 ms
Image Optimization47 images, 93 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
47
Total Size
93 KB