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https://clck.ru

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
4
PASS
9
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
73
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.13 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

5.50 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

310 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.

5.43 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.

5.50 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
9 PASS 4 REVIEW 2 FIX
D
Third-Party Impact
Action
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (550.9 KiB of 562.0 KiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
JS Execution Cost
Action
1500ms total JS execution
REVIEW
1500ms total JS execution
Warning::
https://yastatic.net/s3/clicker/1.23.0/main.ru.js: 498ms CPU time
Warning::
https://mc.yandex.ru/metrika/tag.js: 380ms CPU time
Warning::
Unattributable: 281ms CPU time
Warning::
https://yastatic.net/s3/clicker/1.23.0/98.ru.js: 261ms CPU time
Info::
https://clck.ru/: 80ms CPU time
Warning::
Third-party scripts: 1419ms (95% of total)

Main Thread Breakdown

Script Evaluation 60% Other 21% Script Parsing & Compilation 14% Style & Layout 3%
ScriptTotalScriptingParse/CompileParty
https://yastatic.net/s3/clicker/1.23.0/main.ru.js498ms390ms64ms3rd
https://mc.yandex.ru/metrika/tag.js380ms321ms43ms3rd
Unattributable281ms43ms0ms3rd
https://yastatic.net/s3/clicker/1.23.0/98.ru.js261ms139ms107ms3rd
https://clck.ru/80ms13ms3ms1st
C
JS Bundles
Action
5 scripts, 234 KB unused
REVIEW
5 scripts, 234 KB unused
Warning::
https://yastatic.net/s3/clicker/1.23.0/main.ru.js: 104 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://yastatic.net/s3/clicker/1.23.0/98.ru.js: 83 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://mc.yandex.ru/metrika/tag.js: 48 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 234 KB
234 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://yastatic.net/s3/clicker/1.23.0/main.ru.js145 KB104 KB (72%)✓3rd
https://yastatic.net/s3/clicker/1.23.0/98.ru.js132 KB83 KB (63%)✓3rd
https://mc.yandex.ru/metrika/tag.js85 KB48 KB (56%)✓3rd
https://yastatic.net/s3/clicker/1.23.0/runtime.ru.js1 KB—✓3rd
https://yastatic.net/s3/clicker/1.23.0/critical-css.ru.js1 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

B
Page Weight Inventory
23 resources · 562 KB · 234 KB savings available
REVIEW
23 resources · 562 KB · 234 KB savings available
Info::
Within 1MB page-weight target
Got: 562 KB
Info::
~234 KB of savings available
Warning::
22 third-party resources (98% of weight)
23 resources · 562.0 KiB · 22 third-party Within 1MB page-weight target
JavaScript 65% · 364.9 KiB
Image 16% · 92.1 KiB
Font 14% · 75.9 KiB
CSS 2% · 12.1 KiB
Document 2% · 11.1 KiB
Other 1% · 5.9 KiB

~233.8 KiB of savings available

Remove unused JavaScript: 233.8 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
562 KB transferred, 23 requests
PASS
562 KB transferred, 23 requests
Info::
Page weighs 1.4 MB (562 KB transferred)
Info::
23 HTTP requests
Info::
Estimated 0.12 g CO2 per page load
562 KB / 2.4 MB budget
562 KB transferred
23 requests
0.12 g CO2 per page load
JavaScript 364.9 KiB 65%
Other 95.3 KiB 17%
Fonts 75.9 KiB 14%
CSS 12.1 KiB 2%
HTML 11.1 KiB 2%
Other 1.4 KiB 0%
Other 803 B 0%
Images 520 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 1 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
2 fonts (76 KB)
PASS
2 fonts (76 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

76 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 3.1 s LCP 5.5 shttps://yastatic.net/islands/_/PyVcRbwHetz0gOVWLonWH7Od8zM.woff2PyVcRbwHetz0gOVWLonWH7O... https://yastatic.net/islands/_/PyVcRbwHetz0gOVWLonWH7Od8zM.woff2 — 37.3 KiB — 210 ms — font-display: swaphttps://yastatic.net/islands/_/7_GKBdKFbUPzKlghJRv55xgz0FQ.woff27_GKBdKFbUPzKlghJRv55xg... https://yastatic.net/islands/_/7_GKBdKFbUPzKlghJRv55xgz0FQ.woff2 — 38.6 KiB — 255 ms — font-display: swap
PyVcRbwHetz0gOVWLonWH7O... woff2 swap
Size 37 KB
Load time 210 ms
Start 233 ms
Risk FOUT — text flashes from fallback to web font
7_GKBdKFbUPzKlghJRv55xg... woff2 swap
Size 39 KB
Load time 255 ms
Start 233 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
23 requests over 1623ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 3.1 s LCP 5.5 shttps://clck.ru// https://clck.ru/ — 200 — 11.1 KiB — 215 ms — http/1.1https://yastatic.net/islands/_/PyVcRbwHetz0gOVWLonWH7Od8zM.woff2yastatic.net/islands/_/PyVcRbwHetz0... https://yastatic.net/islands/_/PyVcRbwHetz0gOVWLonWH7Od8zM.woff2 — 200 — 37.3 KiB — 210 ms — h2https://yastatic.net/islands/_/7_GKBdKFbUPzKlghJRv55xgz0FQ.woff2yastatic.net/islands/_/7_GKBdKFbUPz... https://yastatic.net/islands/_/7_GKBdKFbUPzKlghJRv55xgz0FQ.woff2 — 200 — 38.6 KiB — 255 ms — h2https://yastatic.net/s3/clicker/1.23.0/critical-css.cssyastatic.net/s3/clicker/1.23.0/crit... https://yastatic.net/s3/clicker/1.23.0/critical-css.css — 200 — 2.1 KiB — 241 ms — h2https://yastatic.net/s3/clicker/1.23.0/main.cssyastatic.net/s3/clicker/1.23.0/main... https://yastatic.net/s3/clicker/1.23.0/main.css — 200 — 10.0 KiB — 238 ms — h2https://yastatic.net/s3/clicker/1.23.0/manifest.jsonyastatic.net/s3/clicker/1.23.0/mani... https://yastatic.net/s3/clicker/1.23.0/manifest.json — 200 — 803 B — 247 ms — h2https://yastatic.net/s3/clicker/1.23.0/runtime.ru.jsyastatic.net/s3/clicker/1.23.0/runt... https://yastatic.net/s3/clicker/1.23.0/runtime.ru.js — 200 — 1.3 KiB — 137 ms — h2https://yastatic.net/s3/clicker/1.23.0/critical-css.ru.jsyastatic.net/s3/clicker/1.23.0/crit... https://yastatic.net/s3/clicker/1.23.0/critical-css.ru.js — 200 — 757 B — 139 ms — h2https://yastatic.net/s3/clicker/1.23.0/98.ru.jsyastatic.net/s3/clicker/1.23.0/98.r... https://yastatic.net/s3/clicker/1.23.0/98.ru.js — 200 — 132.0 KiB — 245 ms — h2https://yastatic.net/s3/clicker/1.23.0/main.ru.jsyastatic.net/s3/clicker/1.23.0/main... https://yastatic.net/s3/clicker/1.23.0/main.ru.js — 200 — 145.4 KiB — 291 ms — h2https://mc.yandex.ru/metrika/tag.jsmc.yandex.ru/metrika/tag.js https://mc.yandex.ru/metrika/tag.js — 200 — 85.4 KiB — 285 ms — h2https://mc.yandex.com/sync_cookie_image_check?scid=3d68e6eb-c9ec-96f5-e3c7-5a0a31a7bf38&cid=1173931mc.yandex.com/sync_cookie_image_che... https://mc.yandex.com/sync_cookie_image_check?scid=3d68e6eb-c9ec-96f5-e3c7-5a0a31a7bf38&cid=1173931 — 302 — 321 B — 57 ms — h2https://mc.yandex.com/metrika/advert.gif?t=gdpr(14)ti(4)mc.yandex.com/metrika/advert.gif?t=... https://mc.yandex.com/metrika/advert.gif?t=gdpr(14)ti(4) — 200 — 374 B — 52 ms — h2https://mc.yandex.ru/sync_cookie_image_start?cid=1173931&redirect_domain=mc.yandex.com&scid=3d68e6eb-c9ec-96f5-e3c7-5a0a31a7bf38&token=11008.VEi5WDbT2L5bshtjQYD0yrU-cBTK5lxBISOtKUUCn6zPzps8jQGYm-h2wkafMW7O.lImy5QnFp36PsycjLzhxb_9fZI0%2Cmc.yandex.ru/sync_cookie_image_star... https://mc.yandex.ru/sync_cookie_image_start?cid=1173931&redirect_domain=mc.yandex.com&scid=3d68e6eb-c9ec-96f5-e3c7-5a0a31a7bf38&token=11008.VEi5WDbT2L5bshtjQYD0yrU-cBTK5lxBISOtKUUCn6zPzps8jQGYm-h2wkafMW7O.lImy5QnFp36PsycjLzhxb_9fZI0%2C — 302 — 490 B — 50 ms — 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— 302 — 2.0 KiB — 56 ms — h2https://yastatic.net/s3/clicker/_/favicon.icoyastatic.net/s3/clicker/_/favicon.i... https://yastatic.net/s3/clicker/_/favicon.ico — 200 — 91.6 KiB — 215 ms — 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— 200 — 941 B — 59 ms — h2https://mc.yandex.com/sync_cookie_image_check_secondary?scid=e974cb1d-4b98-3106-d030-2fa38fb7e915&cid=1173931mc.yandex.com/sync_cookie_image_che... https://mc.yandex.com/sync_cookie_image_check_secondary?scid=e974cb1d-4b98-3106-d030-2fa38fb7e915&cid=1173931 — 302 — 303 B — 55 ms — h2https://mc.yandex.ru/sync_cookie_image_start_secondary?cid=1173931&redirect_domain=mc.yandex.com&scid=e974cb1d-4b98-3106-d030-2fa38fb7e915&token=11008.th_QSlcP674pK00n9DyT4Bw4VF3zKK6vMLh11sHpYRbT84ZAuB2QrRrvOdqEzWKa.7h87kxUlQ-xeWararDlx0O-PJbQ%2Cmc.yandex.ru/sync_cookie_image_star... https://mc.yandex.ru/sync_cookie_image_start_secondary?cid=1173931&redirect_domain=mc.yandex.com&scid=e974cb1d-4b98-3106-d030-2fa38fb7e915&token=11008.th_QSlcP674pK00n9DyT4Bw4VF3zKK6vMLh11sHpYRbT84ZAuB2QrRrvOdqEzWKa.7h87kxUlQ-xeWararDlx0O-PJbQ%2C — 302 — 504 B — 54 ms — h2https://mc.yandex.com/sync_cookie_image_decide_secondary?cid=1173931&scid=e974cb1d-4b98-3106-d030-2fa38fb7e915&token=11008.xXBmDX9ZLITHerkQ9v0Ua1NpBcT0l0Z2hGlYvZgkH_9-3xQ1km83X_h6dSvg-Gj0MBW3tW69Y5FnNaQsfC7c3IDoPosXjQLE328EA4O2nPg%2C.SVSJTJ0j-6rTdOhZmnSLMdc_iF8%2Cmc.yandex.com/sync_cookie_image_dec... https://mc.yandex.com/sync_cookie_image_decide_secondary?cid=1173931&scid=e974cb1d-4b98-3106-d030-2fa38fb7e915&token=11008.xXBmDX9ZLITHerkQ9v0Ua1NpBcT0l0Z2hGlYvZgkH_9-3xQ1km83X_h6dSvg-Gj0MBW3tW69Y5FnNaQsfC7c3IDoPosXjQLE328EA4O2nPg%2C.SVSJTJ0j-6rTdOhZmnSLMdc_iF8%2C — 200 — 79 B — 51 ms — h2https://mc.yandex.com/ytm-config/1173931?wmode=7mc.yandex.com/ytm-config/1173931?wm... https://mc.yandex.com/ytm-config/1173931?wmode=7 — 200 — 517 B — 55 ms — h2https://csp.yandex.net/csp?project=clicker&from=clck&reqId=60833b77-e5d2-4f91-bdc4-2b52bb9218edcsp.yandex.net/csp?project=clicker&... https://csp.yandex.net/csp?project=clicker&from=clck&reqId=60833b77-e5d2-4f91-bdc4-2b52bb9218ed — 200 — 107 B — 153 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
95% of JavaScript execution is third-party
First-party Third-party 1419ms · 363KB · ₽420/mo
yastatic.net
Other
Costly
Execution 498ms
Transfer 145 KB
Unused 72%
Monthly Cost ₽147/mo
mc.yandex.ru
Other
Costly
Execution 380ms
Transfer 85 KB
Unused 56%
Monthly Cost ₽112/mo
Unattributable
Other
Costly
Execution 281ms
Transfer 0 KB
Monthly Cost ₽83/mo
yastatic.net
Other
Costly
Execution 261ms
Transfer 132 KB
Unused 63%
Monthly Cost ₽77/mo

These scripts may cost more than they're worth

  • yastatic.net adds 498ms and costs ~₽147/month
  • mc.yandex.ru adds 380ms and costs ~₽112/month
  • Unattributable adds 281ms and costs ~₽83/month
  • yastatic.net adds 261ms and costs ~₽77/month

95% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

yastatic.net takes 498ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

72% of yastatic.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

mc.yandex.ru takes 380ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

56% of mc.yandex.ru's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Unattributable takes 281ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

yastatic.net takes 261ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

63% of yastatic.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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