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.
1.73 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.50 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
81 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.
1.83 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.
3.50 s
Page Load Progression
FPage Weight BudgetAction5.9 MB transferred, 192 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 ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction96 scripts, 359 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 130 KB | 103 KB (79%) | ✓ | 3rd |
| https://cdn-c.skcrtxr.com/wrapper/js/common-engine.js?v=s-dc1af2de-5f10-4ef6-a4db-cb39db302222 | 152 KB | 99 KB (65%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 57 KB (55%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 44 KB (52%) | ✓ | 3rd |
| https://en.russiatoday.com/static/js/common.min.js?v=16464124494475130342 | 40 KB | 28 KB (70%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 32 KB | 27 KB (85%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-BB8DNPB73F | 152 KB | — | ✓ | 3rd |
| https://odysee.com/public/assets/embedClaimComponent-ByTJUK3r.js | 4 KB | — | ✓ | 3rd |
| https://en.russiatoday.com/static/libs/qrcode.min.js?v=2 | 7 KB | — | ✓ | 3rd |
| https://cdn.dmtgvn.com/wrapper/js/manager.js?pid=880ca144-da2d-42d5-918a-bc6aa4fbd9c3 | 2 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
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
DPage Weight InventoryAction192 resources · 5.9 MB · 359 KB savings availableFIX
~358.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 192 resources | 5.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization30 images, 0 KB saveableREVIEW
CJS Execution CostAction1198ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.rt.com/ | 282ms | 17ms | 3ms | 3rd |
| Unattributable | 278ms | 20ms | 0ms | 3rd |
| https://yandex.ru/ads/system/context.js | 190ms | 169ms | 9ms | 3rd |
| https://abt.s3.yandex.net/expjs/latest/exp.js | 176ms | 155ms | 0ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 117ms | 99ms | 14ms | 3rd |
| https://cdn-c.skcrtxr.com/wrapper/js/common-engine.js?v=s-dc1af2de-5f10-4ef6-a4db-cb39db302222 | 78ms | 57ms | 12ms | 3rd |
| https://en.russiatoday.com/static/js/libs/lazysizes.min.js | 76ms | 41ms | 0ms | 3rd |
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading10 fonts (257 KB)PASS
Web fonts
10
257 KB total
Render-blocking
0
of 10
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- 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 ~54 KB and ~108 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall192 requests over 31004msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.rt.com www.rt.com | Other | 282ms | 60 KB | — | ₽443/mo | Costly |
Unattributable Unattributable | Other | 278ms | 0 KB | — | ₽437/mo | Costly |
yandex.ru yandex.ru | Other | 190ms | 105 KB | 55% | ₽299/mo | Costly |
abt.s3.yandex.net abt.s3.yandex.net | Other | 176ms | 6 KB | — | ₽277/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 117ms | 85 KB | 52% | ₽184/mo | Costly |
cdn-c.skcrtxr.com cdn-c.skcrtxr.com | Other | 78ms | 152 KB | 65% | ₽123/mo | Costly |
en.russiatoday.com en.russiatoday.com | Other | 76ms | 4 KB | — | ₽119/mo | Costly |
These scripts may cost more than they're worth
- www.rt.com adds 282ms and costs ~₽443/month
- Unattributable adds 278ms and costs ~₽437/month
- yandex.ru adds 190ms and costs ~₽299/month
- abt.s3.yandex.net adds 176ms and costs ~₽277/month
- mc.yandex.ru adds 117ms and costs ~₽184/month
- cdn-c.skcrtxr.com adds 78ms and costs ~₽123/month
- en.russiatoday.com adds 76ms and costs ~₽119/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
www.rt.com takes 282ms 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 278ms 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
yandex.ru takes 190ms 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
55% 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
abt.s3.yandex.net takes 176ms 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
mc.yandex.ru takes 117ms 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
52% 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
cdn-c.skcrtxr.com takes 78ms 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
65% of cdn-c.skcrtxr.com'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
en.russiatoday.com takes 76ms 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