Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

Best Practices

100

SEO

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

3.17 s

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

13.09 s

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

846 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.024

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

8.81 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.

22.52 s

Page Load Progression

4.2 s

8.3 s

12.5 s

16.6 s

20.8 s

24.9 s

29.1 s

33.2 s

Checks

7 PASS 2 REVIEW 6 FIX

Page Weight Budget

Action

4.4 MB transferred, 187 requests

FIX

4.4 MB transferred, 187 requests

Page weighs 12.2 MB (4.4 MB transferred)

JavaScript is 3.2 MB — consider code splitting or lazy loading

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Got: 3.2 MB

Fonts are 290 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 290 KB

187 HTTP requests — consider bundling or reducing

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Estimated 0.91 g CO2 per page load

4.4 MB transferred

187 requests

0.91 g CO2 per page load

JavaScript 3.2 MiB 74%

Fonts 290.1 KiB 7%

Images 287.7 KiB 6%

Other 240.2 KiB 5%

CSS 158.8 KiB 4%

Other 87.8 KiB 2%

HTML 83.1 KiB 2%

Other 14.0 KiB 0%

Other 4.2 KiB 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

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.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (4.4 MiB of 4.4 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

JS Execution Cost

Action

8363ms total JS execution

FIX

8363ms total JS execution

https://i.li.ru/static/js/protoculous-effects-pack...: 1939ms CPU time

Unattributable: 1208ms CPU time

https://cdn.viqeo.tv/js/vq_starter.js: 908ms CPU time

https://www.liveinternet.ru/: 903ms CPU time

https://yastatic.net/partner-code-bundles/1304651/...: 592ms CPU time

Third-party scripts: 8363ms (100% of total)

Main Thread Breakdown

Script Evaluation 50% Other 27% Rendering 9% Script Parsing & Compilation 6% Style & Layout 4%

Script	Total	Scripting	Parse/Compile	Party
https://i.li.ru/static/js/protoculous-effects-packer.js	1939ms	1349ms	9ms	3rd
Unattributable	1208ms	87ms	0ms	3rd
https://cdn.viqeo.tv/js/vq_starter.js	908ms	156ms	21ms	3rd
https://www.liveinternet.ru/	903ms	41ms	6ms	3rd
https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js	592ms	418ms	55ms	3rd
https://yandex.ru/ads/system/context.js	541ms	445ms	33ms	3rd
https://mc.yandex.ru/metrika/watch.js	527ms	445ms	64ms	3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js	336ms	219ms	56ms	3rd
https://cdn.vqserve.com/vpaid-profile.js	253ms	210ms	31ms	3rd
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604160101/show_ads_impl_fy2021.js	218ms	165ms	46ms	3rd

Showing top 10 of 17 scripts

JS Bundles

Action

46 scripts, 848 KB unused

FIX

46 scripts, 848 KB unused

https://i.li.ru/static/radio/radio-mediametrics-wi...: 199 KB unused (35%)

Consider code splitting or tree shaking to reduce unused code.

https://i.li.ru/static/radio/radio-mediametrics-wi...: unminified — 181 KB could be saved

https://pagead2.googlesyndication.com/pagead/manag...: 136 KB unused (77%)

Consider code splitting or tree shaking to reduce unused code.

https://www.liveinternet.ru/utf/li.js: 121 KB unused (81%)

Consider code splitting or tree shaking to reduce unused code.

https://www.liveinternet.ru/utf/li.js: unminified — 87 KB could be saved

https://yastatic.net/partner-code-bundles/1304651/...: 81 KB unused (62%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn.vqserve.com/vpaid-profile.js: 67 KB unused (78%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 848 KB

848 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://i.li.ru/static/radio/radio-mediametrics-widget__VK_1251.js	573 KB	199 KB (35%)	✗	3rd
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604160101/show_ads_impl_fy2021.js	178 KB	136 KB (77%)	✓	3rd
https://www.liveinternet.ru/utf/li.js	152 KB	121 KB (81%)	✗	3rd
https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js	130 KB	81 KB (62%)	✓	3rd
https://cdn.vqserve.com/vpaid-profile.js	91 KB	67 KB (78%)	✓	3rd
https://cdn.viqeo.tv/js/assets/master-8150/js/vn_player.js	117 KB	40 KB (34%)	✓	3rd
https://cdn-c.skcrtxr.com/wrapper/js/adserver-vpaid-eng-v4.js?v=s-dc1af2de-5f10-4ef6-a4db-cb39db302222	66 KB	40 KB (61%)	✓	3rd
https://yandex.ru/ads/system/context.js	105 KB	39 KB (37%)	✓	3rd
https://mc.yandex.ru/metrika/watch.js	0 KB	36 KB (53%)	✓	3rd
https://mc.yandex.ru/metrika/watch.js	69 KB	36 KB (53%)	✓	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

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

Page Weight Inventory

Action

187 resources · 4.4 MB · 848 KB savings available

FIX

187 resources · 4.4 MB · 848 KB savings available

Page weight 3.4 MB over 1MB target

Got: 4.4 MB Expected: ≤ 1 MB

~848 KB of savings available

186 third-party resources (100% of weight)

3 resources over 200KB

187 resources · 4.4 MiB · 186 third-party 3.4 MiB over 1MB target

JavaScript 74% · 3.2 MiB

Image 7% · 293.1 KiB

Font 7% · 290.1 KiB

Media 5% · 203.1 KiB

CSS 4% · 158.8 KiB

Other 3% · 136.1 KiB

Document 2% · 84.7 KiB

~847.7 KiB of savings available

Remove unused JavaScript: 847.7 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

187 resources			4.4 MiB

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

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

Image Optimization

43 images, 0 KB saveable

REVIEW

43 images, 0 KB saveable

All images are well-optimized

43 images 288 KB

0 oversized -0 KB

33 legacy format

0 missing dimensions CLS risk

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

4 fonts (290 KB)

PASS

4 fonts (290 KB)

4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

290 KB total

Render-blocking

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

text-variable-full.woff2 woff2 swap

Size 26 KB

Load time 194 ms

Start 1.5 s

Risk FOUT — text flashes from fallback to web font

roboto700.woff woff swap

Size 87 KB

Load time 320 ms

Start 4.4 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

roboto400.woff woff swap

Size 88 KB

Load time 439 ms

Start 4.4 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

roboto500.woff woff swap

Size 88 KB

Load time 443 ms

Start 4.4 s

Risk FOUT — text flashes from fallback to web font

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 ~79 KB and ~158 ms

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

5 hints, 0 missing preconnects

PASS

5 hints, 0 missing preconnects

Page uses 5 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

—

prefetch

—

5 resource hints configured

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

Network Waterfall

187 requests over 32108ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

100% of JavaScript execution is third-party

First-party Third-party 8363ms · 1497KB · ₽2476/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
i.li.ru i.li.ru	Other	1939ms	62 KB	—	₽574/mo	Costly
Unattributable Unattributable	Other	1208ms	0 KB	—	₽358/mo	Costly
cdn.viqeo.tv cdn.viqeo.tv	Other	908ms	0 KB	—	₽269/mo	Costly
www.liveinternet.ru www.liveinternet.ru	Other	903ms	34 KB	—	₽267/mo	Costly
yastatic.net yastatic.net	Other	592ms	130 KB	62%	₽175/mo	Costly
yandex.ru yandex.ru	Other	541ms	105 KB	37%	₽160/mo	Costly
mc.yandex.ru mc.yandex.ru	Other	527ms	0 KB	53%	₽156/mo	Costly
pagead2.googlesyndication.com pagead2.googlesyndication.com	Other	336ms	54 KB	52%	₽100/mo	Costly
cdn.vqserve.com cdn.vqserve.com	Other	253ms	91 KB	78%	₽75/mo	Costly
pagead2.googlesyndication.com pagead2.googlesyndication.com	Other	218ms	178 KB	77%	₽65/mo	Costly
i.li.ru i.li.ru	Other	217ms	573 KB	35%	₽64/mo	Costly
yandex.ru yandex.ru	Other	178ms	37 KB	—	₽53/mo	Costly
cdn.viqeo.tv cdn.viqeo.tv	Other	161ms	117 KB	34%	₽48/mo	Optional
content.adriver.ru content.adriver.ru	Other	105ms	16 KB	—	₽31/mo	Optional
cdn.viqeo.tv cdn.viqeo.tv	Other	98ms	30 KB	—	₽29/mo	Optional
cdn-c.skcrtxr.com cdn-c.skcrtxr.com	Other	96ms	66 KB	61%	₽28/mo	Optional
cdn.viqeo.tv cdn.viqeo.tv	Other	84ms	4 KB	—	₽25/mo	Optional

i.li.ru

Other

Costly

Execution 1939ms

Transfer 62 KB

Monthly Cost ₽574/mo

Unattributable

Other

Costly

Execution 1208ms

Transfer 0 KB

Monthly Cost ₽358/mo

cdn.viqeo.tv

Other

Costly

Execution 908ms

Transfer 0 KB

Monthly Cost ₽269/mo

www.liveinternet.ru

Other

Costly

Execution 903ms

Transfer 34 KB

Monthly Cost ₽267/mo

yastatic.net

Other

Costly

Execution 592ms

Transfer 130 KB

Unused 62%

Monthly Cost ₽175/mo

yandex.ru

Other

Costly

Execution 541ms

Transfer 105 KB

Unused 37%

Monthly Cost ₽160/mo

mc.yandex.ru

Other

Costly

Execution 527ms

Transfer 0 KB

Unused 53%

Monthly Cost ₽156/mo

pagead2.googlesyndication.com

Other

Costly

Execution 336ms

Transfer 54 KB

Unused 52%

Monthly Cost ₽100/mo

cdn.vqserve.com

Other

Costly

Execution 253ms

Transfer 91 KB

Unused 78%

Monthly Cost ₽75/mo

pagead2.googlesyndication.com

Other

Costly

Execution 218ms

Transfer 178 KB

Unused 77%

Monthly Cost ₽65/mo

i.li.ru

Other

Costly

Execution 217ms

Transfer 573 KB

Unused 35%

Monthly Cost ₽64/mo

yandex.ru

Other

Costly

Execution 178ms

Transfer 37 KB

Monthly Cost ₽53/mo

cdn.viqeo.tv

Other

Optional

Execution 161ms

Transfer 117 KB

Unused 34%

Monthly Cost ₽48/mo

content.adriver.ru

Other

Optional

Execution 105ms

Transfer 16 KB

Monthly Cost ₽31/mo

cdn.viqeo.tv

Other

Optional

Execution 98ms

Transfer 30 KB

Monthly Cost ₽29/mo

cdn-c.skcrtxr.com

Other

Optional

Execution 96ms

Transfer 66 KB

Unused 61%

Monthly Cost ₽28/mo

cdn.viqeo.tv

Other

Optional

Execution 84ms

Transfer 4 KB

Monthly Cost ₽25/mo

These scripts may cost more than they're worth

i.li.ru adds 1939ms and costs ~₽574/month
Unattributable adds 1208ms and costs ~₽358/month
cdn.viqeo.tv adds 908ms and costs ~₽269/month
www.liveinternet.ru adds 903ms and costs ~₽267/month
yastatic.net adds 592ms and costs ~₽175/month
yandex.ru adds 541ms and costs ~₽160/month
mc.yandex.ru adds 527ms and costs ~₽156/month
pagead2.googlesyndication.com adds 336ms and costs ~₽100/month
cdn.vqserve.com adds 253ms and costs ~₽75/month
pagead2.googlesyndication.com adds 218ms and costs ~₽65/month
i.li.ru adds 217ms and costs ~₽64/month
yandex.ru adds 178ms and costs ~₽53/month

100% 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

i.li.ru takes 1939ms 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

Unattributable takes 1208ms 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

cdn.viqeo.tv takes 908ms 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

www.liveinternet.ru takes 903ms 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 592ms 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

62% 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

yandex.ru takes 541ms 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

mc.yandex.ru takes 527ms 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

53% 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

pagead2.googlesyndication.com takes 336ms 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

52% of pagead2.googlesyndication.com'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

cdn.vqserve.com takes 253ms 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

78% of cdn.vqserve.com'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

pagead2.googlesyndication.com takes 218ms 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

77% of pagead2.googlesyndication.com'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

i.li.ru takes 217ms 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

yandex.ru takes 178ms 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

61% of cdn-c.skcrtxr.com'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.