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.
1.94 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.17 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
135 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.005
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.76 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.
5.40 s
Page Load Progression
FPage Weight BudgetAction10.9 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 ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction11997ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdn2-static.ntv.ru/frontend/js/player.js?v12122025 | 8166ms | 1585ms | 34ms | 3rd |
| Unattributable | 934ms | 31ms | 0ms | 3rd |
| https://static2.ntv.ru/assets/main-CS-BSIk4.js | 787ms | 627ms | 1ms | 3rd |
| https://www.ntv.ru/ | 718ms | 4ms | 5ms | 3rd |
| https://www.ntv.ru/stories/new-amp/index.jsp | 389ms | 1ms | 0ms | 3rd |
| https://cdn.ampproject.org/v0.js | 177ms | 144ms | 6ms | 3rd |
| https://cdn2-static.ntv.ru/frontend/js/videojs-contrib-dash.8edb27ed11429794159a.js | 154ms | 120ms | 16ms | 3rd |
| https://privacy-cs.mail.ru/static/sync-loader.js | 131ms | 105ms | 2ms | 3rd |
| https://yandex.ru/ads/system/header-bidding.js | 128ms | 103ms | 4ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 88ms | 76ms | 7ms | 3rd |
Showing top 10 of 15 scripts
FJS BundlesAction56 scripts, 842 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn2-static.ntv.ru/frontend/js/dashjs.0d72df2900da4ce3be3a.js | 191 KB | 153 KB (80%) | ✓ | 3rd |
| https://cdn2-static.ntv.ru/frontend/js/player.js?v12122025 | 235 KB | 127 KB (54%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 130 KB | 105 KB (81%) | ✓ | 3rd |
| https://cdn2-static.ntv.ru/frontend/js/videojs-contrib-dash.8edb27ed11429794159a.js | 190 KB | 93 KB (49%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 104 KB | 73 KB (70%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-582JW9RQ | 122 KB | 68 KB (55%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 49 KB (58%) | ✓ | 3rd |
| https://static2.ntv.ru/assets/main-CS-BSIk4.js | 159 KB | 39 KB (25%) | ✓ | 3rd |
| https://cdn.ampproject.org/v0.js | 72 KB | 37 KB (52%) | ✓ | 3rd |
| https://cdn.ampproject.org/v0/amp-analytics-0.1.js | 31 KB | 26 KB (83%) | ✓ | 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 · 10.9 MB · 842 KB savings availableFIX
~842.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 188 resources | 10.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization34 images, 0 KB saveableREVIEW
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 Loading5 fonts (210 KB)PASS
Web fonts
5
210 KB total
Render-blocking
0
of 5
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)
Fixing the unchecked items could save ~1 KB and ~2 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall188 requests over 42616msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn2-static.ntv.ru cdn2-static.ntv.ru | Other | 8166ms | 235 KB | 54% | ₽2418/mo | Costly |
Unattributable Unattributable | Other | 934ms | 0 KB | — | ₽276/mo | Costly |
static2.ntv.ru static2.ntv.ru | Other | 787ms | 159 KB | 25% | ₽233/mo | Costly |
www.ntv.ru www.ntv.ru | Other | 718ms | 36 KB | — | ₽213/mo | Costly |
www.ntv.ru www.ntv.ru | Other | 389ms | 2 KB | — | ₽115/mo | Costly |
cdn.ampproject.org cdn.ampproject.org | Other | 177ms | 72 KB | 52% | ₽53/mo | Costly |
cdn2-static.ntv.ru cdn2-static.ntv.ru | Other | 154ms | 190 KB | 49% | ₽46/mo | Optional |
privacy-cs.mail.ru privacy-cs.mail.ru | Other | 131ms | 22 KB | — | ₽39/mo | Optional |
yandex.ru yandex.ru | Other | 128ms | 37 KB | — | ₽38/mo | Optional |
mc.yandex.ru mc.yandex.ru | Other | 88ms | 85 KB | 58% | ₽26/mo | Optional |
top-fwz1.mail.ru top-fwz1.mail.ru | Other | 73ms | 2 KB | — | ₽22/mo | Optional |
static2.ntv.ru static2.ntv.ru | Other | 68ms | 3 KB | — | ₽20/mo | Optional |
static2.ntv.ru static2.ntv.ru | Other | 67ms | 20 KB | — | ₽20/mo | Optional |
yandex.ru yandex.ru | Other | 62ms | 104 KB | 70% | ₽18/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 54ms | 122 KB | 55% | ₽16/mo | Optional |
These scripts may cost more than they're worth
- cdn2-static.ntv.ru adds 8166ms and costs ~₽2418/month
- Unattributable adds 934ms and costs ~₽276/month
- static2.ntv.ru adds 787ms and costs ~₽233/month
- www.ntv.ru adds 718ms and costs ~₽213/month
- www.ntv.ru adds 389ms and costs ~₽115/month
- cdn.ampproject.org adds 177ms and costs ~₽53/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
cdn2-static.ntv.ru takes 8166ms 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
54% of cdn2-static.ntv.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
Unattributable takes 934ms 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
static2.ntv.ru takes 787ms 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
www.ntv.ru takes 718ms 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
www.ntv.ru takes 389ms 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
cdn.ampproject.org takes 177ms 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 cdn.ampproject.org'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
58% 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
70% 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
55% of Google Tag Manager'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