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.
3.87 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
14.40 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
362 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.010
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.32 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.
14.51 s
Page Load Progression
1.5 s
3.0 s
4.5 s
5.9 s
7.4 s
8.9 s
10.4 s
11.9 sFPage Weight BudgetAction3.9 MB transferred, 120 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
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 CostAction10403ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://yastatic.net/partner-code-bundles/1304651/vas-bundles/bundles-es2017/loader.bundle.js | 2613ms | 1206ms | 67ms | 3rd |
| https://www.interfax.ru/ | 1497ms | 61ms | 10ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 1320ms | 1188ms | 59ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 1130ms | 793ms | 15ms | 3rd |
| Unattributable | 1119ms | 25ms | 0ms | 3rd |
| https://yandex.ru/ads/system/context.js | 1056ms | 839ms | 35ms | 3rd |
| https://top-fwz1.mail.ru/js/code.js | 781ms | 694ms | 4ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/9c75e4fc5aa6da83.js | 319ms | 228ms | 21ms | 3rd |
| https://privacy-cs.mail.ru/static/sync-loader.js | 289ms | 246ms | 7ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 223ms | 191ms | 20ms | 3rd |
Showing top 10 of 11 scripts
DJS BundlesAction17 scripts, 302 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://yastatic.net/partner-code-bundles/1304651/vas-bundles/bundles-es2017/loader.bundle.js | 207 KB | 90 KB (44%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 130 KB | 77 KB (59%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 43 KB (51%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 38 KB (37%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/9c75e4fc5aa6da83.js | 53 KB | 33 KB (64%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 32 KB | 20 KB (64%) | ✓ | 3rd |
| https://www.interfax.ru/js/unobtrusive-ajax-nano.js?v=6OLjz9GbA4BSVq_s7NYB4ioSwY7QpbxLF4WMc01BrDo | 2 KB | — | ✓ | 3rd |
| https://yastatic.net/safeframe-bundles/0.83/host.js | 9 KB | — | ✓ | 3rd |
| https://www.interfax.ru/js/script.js?v=mDZLVhj5Ha2huk69sF9j5wlZBOkYTyM8E7-vC-yPc7s | 22 KB | — | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/1c3691bad67ecbd7.js | 13 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 InventoryAction120 resources · 3.9 MB · 302 KB savings availableFIX
~301.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 120 resources | 3.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction46 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.
Performance issues directly impact user engagement and conversion rates.
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
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
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
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
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
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 Loading3 fonts (64 KB)PASS
Web fonts
3
64 KB total
Render-blocking
0
of 3
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall120 requests over 30610msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
yastatic.net yastatic.net | Other | 2613ms | 207 KB | 44% | ₽774/mo | Costly |
www.interfax.ru www.interfax.ru | Other | 1497ms | 19 KB | — | ₽443/mo | Costly |
yastatic.net yastatic.net | Other | 1320ms | 130 KB | 59% | ₽391/mo | Costly |
yastatic.net yastatic.net | Other | 1130ms | 32 KB | 64% | ₽334/mo | Costly |
Unattributable Unattributable | Other | 1119ms | 0 KB | — | ₽331/mo | Costly |
yandex.ru yandex.ru | Other | 1056ms | 105 KB | 37% | ₽313/mo | Costly |
top-fwz1.mail.ru top-fwz1.mail.ru | Other | 781ms | 20 KB | — | ₽231/mo | Costly |
yastatic.net yastatic.net | Other | 319ms | 53 KB | 64% | ₽94/mo | Costly |
privacy-cs.mail.ru privacy-cs.mail.ru | Other | 289ms | 22 KB | — | ₽86/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 223ms | 85 KB | 51% | ₽66/mo | Costly |
yastatic.net yastatic.net | Other | 57ms | 9 KB | — | ₽17/mo | Optional |
These scripts may cost more than they're worth
- yastatic.net adds 2613ms and costs ~₽774/month
- www.interfax.ru adds 1497ms and costs ~₽443/month
- yastatic.net adds 1320ms and costs ~₽391/month
- yastatic.net adds 1130ms and costs ~₽334/month
- Unattributable adds 1119ms and costs ~₽331/month
- yandex.ru adds 1056ms and costs ~₽313/month
- top-fwz1.mail.ru adds 781ms and costs ~₽231/month
- yastatic.net adds 319ms and costs ~₽94/month
- privacy-cs.mail.ru adds 289ms and costs ~₽86/month
- mc.yandex.ru adds 223ms and costs ~₽66/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
yastatic.net takes 2613ms 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.interfax.ru takes 1497ms 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 1320ms 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
59% 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
yastatic.net takes 1130ms 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
64% 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
Unattributable takes 1119ms 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 1056ms 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
top-fwz1.mail.ru takes 781ms 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 319ms 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
64% 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
privacy-cs.mail.ru takes 289ms 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 223ms 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