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.
2.39 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.16 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
555 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.
5.19 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.
10.39 s
Page Load Progression
916 ms
1.8 s
2.7 s 3.7 s
4.6 s 5.5 s
6.4 s
7.3 sFPage Weight BudgetAction9.1 MB transferred, 255 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
DJS Execution CostAction3413ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://mc.yandex.ru/metrika/tag.js | 1116ms | 1083ms | 7ms | 3rd |
| Unattributable | 749ms | 171ms | 0ms | 3rd |
| https://www.vesti.ru/ | 580ms | 63ms | 1ms | 3rd |
| https://cdn.vesti.ru/static/_nuxt/uQ28tpm4.js | 280ms | 256ms | 0ms | 3rd |
| https://yandex.ru/ads/system/context.js | 269ms | 194ms | 11ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 239ms | 187ms | 4ms | 3rd |
| https://cdn.vesti.ru/static/_nuxt/Co4fOKRc.js | 124ms | 83ms | 1ms | 3rd |
| https://yandex.ru/ads/system/header-bidding.js | 54ms | 44ms | 4ms | 3rd |
DJS BundlesAction69 scripts, 326 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 | 85 KB (65%) | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/Co4fOKRc.js | 155 KB | 72 KB (47%) | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/BFKAzte_.js | 119 KB | 51 KB (43%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 48 KB (47%) | ✓ | 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://cdn.vesti.ru/static/_nuxt/D4eSILPq.js | 3 KB | — | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/BuZv42Y9.js | 2 KB | — | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/BW1v6XO1.js | 1 KB | — | ✓ | 3rd |
| https://cdn.vesti.ru/static/_nuxt/BkiX2arx.js | 4 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 InventoryAction255 resources · 9.1 MB · 326 KB savings availableFIX
~325.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 255 resources | 9.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization107 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
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 Waterfall255 requests over 17240msINFO
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 | 1116ms | 85 KB | 51% | ₽331/mo | Costly |
Unattributable Unattributable | Other | 749ms | 0 KB | — | ₽222/mo | Costly |
www.vesti.ru www.vesti.ru | Other | 580ms | 578 KB | — | ₽172/mo | Costly |
cdn.vesti.ru cdn.vesti.ru | Other | 280ms | 8 KB | — | ₽83/mo | Costly |
yandex.ru yandex.ru | Other | 269ms | 105 KB | 47% | ₽80/mo | Costly |
yastatic.net yastatic.net | Other | 239ms | 32 KB | — | ₽71/mo | Costly |
cdn.vesti.ru cdn.vesti.ru | Other | 124ms | 155 KB | 47% | ₽37/mo | Optional |
yandex.ru yandex.ru | Other | 54ms | 38 KB | — | ₽16/mo | Optional |
These scripts may cost more than they're worth
- mc.yandex.ru adds 1116ms and costs ~₽331/month
- Unattributable adds 749ms and costs ~₽222/month
- www.vesti.ru adds 580ms and costs ~₽172/month
- cdn.vesti.ru adds 280ms and costs ~₽83/month
- yandex.ru adds 269ms and costs ~₽80/month
- yastatic.net adds 239ms and costs ~₽71/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 1116ms 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 749ms 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 580ms 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 280ms 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 269ms 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 239ms 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