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.
7.36 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
37.02 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
4.10 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
12.81 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.
38.66 s
Page Load Progression
848 ms 1.7 s
2.5 s
3.4 s 4.2 s
5.1 s 5.9 s
6.8 sFPage Weight BudgetAction9.1 MB transferred, 251 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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 CostAction14195ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://mc.yandex.ru/metrika/tag.js | 5721ms | 5234ms | 30ms | 3rd |
| Unattributable | 2818ms | 611ms | 0ms | 3rd |
| https://www.vesti.ru/ | 2060ms | 67ms | 2ms | 3rd |
| https://cdn.vesti.ru/static/_nuxt/uQ28tpm4.js | 1570ms | 1456ms | 0ms | 3rd |
| https://yandex.ru/ads/system/context.js | 944ms | 741ms | 39ms | 3rd |
| https://cdn.vesti.ru/static/_nuxt/Co4fOKRc.js | 356ms | 231ms | 2ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 267ms | 163ms | 73ms | 3rd |
| https://yandex.ru/ads/system/header-bidding.js | 203ms | 165ms | 14ms | 3rd |
| https://tns-counter.ru/ncc/counter.js | 99ms | 90ms | 8ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 97ms | 69ms | 18ms | 3rd |
Showing top 10 of 11 scripts
DJS BundlesAction72 scripts, 336 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 | 80 KB (62%) | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/Co4fOKRc.js | 155 KB | 67 KB (44%) | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/BFKAzte_.js | 119 KB | 51 KB (43%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 44 KB (42%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 43 KB (51%) | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/DzeoYaEW.js | 31 KB | 27 KB (87%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 32 KB | 24 KB (75%) | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/HHJosb3I.js | 3 KB | — | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/B-77gIdS.js | 2 KB | — | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/O9k3BXDx.js | 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 InventoryAction251 resources · 9.1 MB · 336 KB savings availableFIX
~336.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 251 resources | 9.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction111 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
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 Loading9 fonts (451 KB)PASS
Web fonts
9
451 KB total
Render-blocking
0
of 9
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~117 KB and ~234 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall251 requests over 17134msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
mc.yandex.ru mc.yandex.ru | Other | 5721ms | 85 KB | 51% | ₽1694/mo | Costly |
Unattributable Unattributable | Other | 2818ms | 0 KB | — | ₽835/mo | Costly |
www.vesti.ru www.vesti.ru | Other | 2060ms | 578 KB | — | ₽610/mo | Costly |
cdn.vesti.ru cdn.vesti.ru | Other | 1570ms | 8 KB | — | ₽465/mo | Costly |
yandex.ru yandex.ru | Other | 944ms | 105 KB | 42% | ₽279/mo | Costly |
cdn.vesti.ru cdn.vesti.ru | Other | 356ms | 155 KB | 44% | ₽105/mo | Costly |
yastatic.net yastatic.net | Other | 267ms | 130 KB | 62% | ₽79/mo | Costly |
yandex.ru yandex.ru | Other | 203ms | 37 KB | — | ₽60/mo | Costly |
tns-counter.ru tns-counter.ru | Other | 99ms | 25 KB | — | ₽29/mo | Optional |
yastatic.net yastatic.net | Other | 97ms | 32 KB | 75% | ₽29/mo | Optional |
2pu3fd3iav.a.trbcdn.net 2pu3fd3iav.a.trbcdn.net | Other | 60ms | 201 KB | — | ₽18/mo | Optional |
These scripts may cost more than they're worth
- mc.yandex.ru adds 5721ms and costs ~₽1694/month
- Unattributable adds 2818ms and costs ~₽835/month
- www.vesti.ru adds 2060ms and costs ~₽610/month
- cdn.vesti.ru adds 1570ms and costs ~₽465/month
- yandex.ru adds 944ms and costs ~₽279/month
- cdn.vesti.ru adds 356ms and costs ~₽105/month
- yastatic.net adds 267ms and costs ~₽79/month
- yandex.ru adds 203ms and costs ~₽60/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
mc.yandex.ru takes 5721ms 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
Unattributable takes 2818ms 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.vesti.ru takes 2060ms 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.vesti.ru takes 1570ms 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 944ms 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.vesti.ru takes 356ms 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
yastatic.net takes 267ms 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
62% of yastatic.net'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 203ms 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
75% of yastatic.net'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