Performance
· 17 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.
3.44 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
23.22 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
441 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.078
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.70 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.
23.55 s
Page Load Progression
FPage Weight BudgetAction3.9 MB transferred, 81 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
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
DThird-Party ImpactAction99% third-party, 0 ms blockingFIX
FJS Execution CostAction4083ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.nic.ru/static/rcweb-bundle-945e0eb9172d0ad84ac5.js | 1975ms | 1432ms | 303ms | 3rd |
| https://www.nic.ru/ | 857ms | 15ms | 14ms | 3rd |
| Unattributable | 565ms | 16ms | 0ms | 3rd |
| https://yastatic.net/pcode/adfox/loader.js | 182ms | 149ms | 27ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 127ms | 107ms | 19ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304600/24ec1381af6bc52b.js | 117ms | 68ms | 47ms | 3rd |
| https://www.nic.ru/scripts/inform-notifications.bundle.js?1776358862021 | 93ms | 64ms | 9ms | 3rd |
| https://www.nic.ru/web/payment-master/static/main-5b17f39973d68e40bafa.js | 85ms | 80ms | 4ms | 3rd |
| https://nic.ru/ | 82ms | 70ms | 6ms | 1st |
FJS BundlesAction18 scripts, 1.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.nic.ru/static/rcweb-bundle-945e0eb9172d0ad84ac5.js | 1294 KB | 876 KB (68%) | ✓ | 3rd |
| https://www.nic.ru/web/payment-master/static/vendors-1c131bfd524f193c8d1d.js | 144 KB | 106 KB (74%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304600/24ec1381af6bc52b.js | 130 KB | 104 KB (81%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 43 KB (50%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304600/e32796170bd90254.js | 32 KB | 25 KB (79%) | ✓ | 3rd |
| https://www.nic.ru/scripts/inform-notifications.bundle.js?1776358862021 | 39 KB | 21 KB (54%) | ✓ | 3rd |
| https://www.nic.ru/web/payment-master/static/main-5b17f39973d68e40bafa.js | 16 KB | — | ✓ | 3rd |
| https://gbzu92.ru/ | 14 KB | — | ✗ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | — | ✓ | 3rd |
| https://www.nic.ru/scripts/internal.bundle.js?1776358862021 | 1 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
FPage Weight InventoryAction81 resources · 3.9 MB · 1.1 MB savings availableFIX
~1.1 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 81 resources | 3.9 MiB | ||||||
CImage OptimizationAction35 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
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
BHTTP Cachingno-cacheREVIEW
no-cache
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (174 KB)PASS
Web fonts
3
174 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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall81 requests over 4656msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.nic.ru www.nic.ru | Other | 1975ms | 1294 KB | 68% | ₽585/mo | Costly |
www.nic.ru www.nic.ru | Other | 857ms | 235 KB | — | ₽254/mo | Costly |
Unattributable Unattributable | Other | 565ms | 0 KB | — | ₽167/mo | Costly |
yastatic.net yastatic.net | Other | 182ms | 0 KB | — | ₽54/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 127ms | 85 KB | 50% | ₽38/mo | Optional |
yastatic.net yastatic.net | Other | 117ms | 130 KB | 81% | ₽35/mo | Optional |
www.nic.ru www.nic.ru | Other | 93ms | 39 KB | 54% | ₽28/mo | Optional |
www.nic.ru www.nic.ru | Other | 85ms | 16 KB | — | ₽25/mo | Optional |
These scripts may cost more than they're worth
- www.nic.ru adds 1975ms and costs ~₽585/month
- www.nic.ru adds 857ms and costs ~₽254/month
- Unattributable adds 565ms and costs ~₽167/month
- yastatic.net adds 182ms and costs ~₽54/month
98% 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.nic.ru takes 1975ms 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
68% of www.nic.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
www.nic.ru takes 857ms 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 565ms 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 182ms 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
50% 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
81% 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
54% of www.nic.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