Performance
· 15 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.
885 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.49 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.04 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.
3.35 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.
8.84 s
Page Load Progression
1.5 s
3.0 s
4.6 s
6.1 s
7.6 s 9.1 s 10.7 s
12.2 sFPage Weight BudgetAction3.7 MB transferred, 188 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 ImpactAction94% third-party, 0 ms blockingFIX
FJS Execution CostAction5357ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://pikabu.ru/.well-known/ddos-guard/check | 1362ms | 454ms | 10ms | 1st |
| Unattributable | 710ms | 139ms | 0ms | 3rd |
| https://cs.pikabu.ru/apps/ub/5.4.703/desktop/app.cafbfecd864d.mo.js | 668ms | 424ms | 47ms | 3rd |
| https://pikabu.ru/ | 607ms | 64ms | 7ms | 1st |
| https://cs.pikabu.ru/apps/ub/5.4.653/desktop/app.d7f4fefdaaf0.mo.js | 357ms | 164ms | 3ms | 3rd |
| https://cs.pikabu.ru/apps/ub/5.4.703/desktop/vendors.e3b40f3c59b2.mo.js | 346ms | 259ms | 55ms | 3rd |
| https://cdn1.moe.video/p/b.js | 268ms | 154ms | 49ms | 3rd |
| https://cs.pikabu.ru/apps/ub/5.4.700/desktop/ui.b4c605b0ab0f.mo.js | 259ms | 226ms | 23ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 252ms | 195ms | 21ms | 3rd |
| https://yandex.ru/ads/system/context.js | 219ms | 157ms | 9ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction29 scripts, 1.2 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cs.pikabu.ru/apps/ub/5.4.703/desktop/app.cafbfecd864d.mo.js | 375 KB | 267 KB (73%) | ✓ | 3rd |
| https://cs.pikabu.ru/apps/ub/5.4.703/desktop/vendors.e3b40f3c59b2.mo.js | 347 KB | 245 KB (71%) | ✓ | 3rd |
| https://cs.pikabu.ru/apps/ub/5.4.700/desktop/ui.b4c605b0ab0f.mo.js | 136 KB | 110 KB (82%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 130 KB | 99 KB (77%) | ✓ | 3rd |
| https://cdn1.moe.video/p/b.js | 101 KB | 81 KB (80%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-GDRZR2E90Y | 176 KB | 70 KB (40%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 58 KB (56%) | ✓ | 3rd |
| https://pikabu.ru/.well-known/ddos-guard/check | 177 KB | 52 KB (29%) | ✓ | 1st |
| https://cs.pikabu.ru/apps/ub/5.4.561/desktop/vendors-editor.626cedc51779.mo.js | 43 KB | 43 KB (100%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 43 KB (51%) | ✓ | 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
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 InventoryAction188 resources · 3.7 MB · 1.2 MB savings availableFIX
~1.2 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 188 resources | 3.7 MiB | ||||||
CImage OptimizationAction48 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
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 Loading7 fonts (269 KB)PASS
Web fonts
7
269 KB total
Render-blocking
0
of 7
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
Network Waterfall188 requests over 27161msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 710ms | 0 KB | — | ₽210/mo | Costly |
cs.pikabu.ru cs.pikabu.ru | Other | 668ms | 375 KB | 73% | ₽198/mo | Costly |
cs.pikabu.ru cs.pikabu.ru | Other | 357ms | 20 KB | — | ₽106/mo | Costly |
cs.pikabu.ru cs.pikabu.ru | Other | 346ms | 347 KB | 71% | ₽103/mo | Costly |
cdn1.moe.video cdn1.moe.video | Other | 268ms | 101 KB | 80% | ₽79/mo | Costly |
cs.pikabu.ru cs.pikabu.ru | Other | 259ms | 136 KB | 82% | ₽77/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 252ms | 0 KB | 51% | ₽75/mo | Costly |
yandex.ru yandex.ru | Other | 219ms | 105 KB | 56% | ₽65/mo | Costly |
yandex.ru yandex.ru | Other | 110ms | 37 KB | — | ₽33/mo | Optional |
ad.mail.ru ad.mail.ru | Other | 105ms | 22 KB | — | ₽31/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 94ms | 176 KB | 40% | ₽28/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 710ms and costs ~₽210/month
- cs.pikabu.ru adds 668ms and costs ~₽198/month
- cs.pikabu.ru adds 357ms and costs ~₽106/month
- cs.pikabu.ru adds 346ms and costs ~₽103/month
- cdn1.moe.video adds 268ms and costs ~₽79/month
- cs.pikabu.ru adds 259ms and costs ~₽77/month
- mc.yandex.ru adds 252ms and costs ~₽75/month
- yandex.ru adds 219ms and costs ~₽65/month
63% 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
Unattributable takes 710ms 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
cs.pikabu.ru takes 668ms 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
73% of cs.pikabu.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
cs.pikabu.ru takes 357ms 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
cs.pikabu.ru takes 346ms 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
71% of cs.pikabu.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
cdn1.moe.video takes 268ms 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
80% of cdn1.moe.video'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
cs.pikabu.ru takes 259ms 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
82% of cs.pikabu.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
mc.yandex.ru takes 252ms 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
yandex.ru takes 219ms 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
56% of 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