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.
2.75 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.68 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
228 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.272
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.86 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.
16.12 s
Page Load Progression
375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s 2.6 s 3.0 sDPage Weight BudgetAction2.5 MB transferred, 221 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 CostAction4922ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gazeta.ru/?utm_auth=false | 2018ms | 4ms | 1ms | 3rd |
| Unattributable | 687ms | 46ms | 0ms | 3rd |
| https://st.top100.ru/top100/top100.js | 592ms | 426ms | 55ms | 3rd |
| https://ssp.rambler.ru/capirs_async.js | 517ms | 365ms | 30ms | 3rd |
| https://mc.webvisor.org/metrika/tag_ww.js | 403ms | 357ms | 19ms | 3rd |
| https://yandex.ru/ads/system/context.js | 364ms | 291ms | 27ms | 3rd |
| https://www.gazeta.ru/ | 180ms | 42ms | 25ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 160ms | 101ms | 51ms | 3rd |
DPage Weight InventoryAction221 resources · 2.5 MB · 290 KB savings availableFIX
~290.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 221 resources | 2.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction69 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
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
CJS BundlesAction30 scripts, 290 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js | 130 KB | 103 KB (80%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 52 KB (50%) | ✓ | 3rd |
| https://mc.webvisor.org/metrika/tag_ww.js | 86 KB | 44 KB (51%) | ✓ | 3rd |
| https://cdn-s01.rambler.ru/magic/v1.3.6/magic.js | 43 KB | 39 KB (91%) | ✓ | 3rd |
| https://st.top100.ru/top100/top100.js | 37 KB | 27 KB (74%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 32 KB | 25 KB (79%) | ✓ | 3rd |
| https://ssp01.rambler.ru/context.jsp?pad_id=437727306&block_id=437727336&screenw=412&screenh=823&winw=412&winh=823&rq=0&rq_type=0&rq_sess=418411FC25549FFDD18465C656116520&adtech_uid=79429e69-e362-426a-9a83-3d1b3665ddd1&adtech_uid_scope=gazeta.ru&publisher_uid=URNIAmnoBOwdEkVMPp9NAg%3D%3D&publisher_uid_scope=.gazeta.ru&jparams=%7B%22puid10%22%3A%22NO%22%2C%22puid18%22%3A%22GAZETA_MAIN_OTHER%22%2C%22puid6%22%3A%22GAZETA_MAIN%22%2C%22pageNumber%22%3A%221%22%2C%22puid42%22%3A%220%22%2C%22pli%22%3A%22a%22%2C%22plp%22%3A%22a%22%2C%22pop%22%3A%22a%22%7D&top=0&left=0&secure=1&vcapirs=38_57_6&top100_session_id=%7B%7D&callback=Begun_Autocontext_saveFeed2&url=https%3A%2F%2Fwww.gazeta.ru%2F | 4 KB | — | ✓ | 3rd |
| https://static.gazeta.ru/nm2021/js/noindex/id_fix.v5.js | 0 KB | — | ✓ | 3rd |
| https://static.gazeta.ru/nm2025/js/sasv.v1.js | 1 KB | — | ✓ | 3rd |
| https://static.gazeta.ru/mobile2025/js/mobile_g_global_v7.js | 7 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
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 Loading12 fonts (180 KB)PASS
Web fonts
12
180 KB total
Render-blocking
0
of 12
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 Waterfall221 requests over 3283msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gazeta.ru www.gazeta.ru | Other | 2018ms | 34 KB | — | ₽598/mo | Costly |
Unattributable Unattributable | Other | 687ms | 0 KB | — | ₽203/mo | Costly |
st.top100.ru st.top100.ru | Other | 592ms | 37 KB | 74% | ₽175/mo | Costly |
ssp.rambler.ru ssp.rambler.ru | Other | 517ms | 89 KB | — | ₽153/mo | Costly |
mc.webvisor.org mc.webvisor.org | Other | 403ms | 86 KB | 51% | ₽119/mo | Costly |
yandex.ru yandex.ru | Other | 364ms | 105 KB | 50% | ₽108/mo | Costly |
www.gazeta.ru www.gazeta.ru | Other | 180ms | 0 KB | — | ₽53/mo | Costly |
yastatic.net yastatic.net | Other | 160ms | 130 KB | 80% | ₽47/mo | Optional |
These scripts may cost more than they're worth
- www.gazeta.ru adds 2018ms and costs ~₽598/month
- Unattributable adds 687ms and costs ~₽203/month
- st.top100.ru adds 592ms and costs ~₽175/month
- ssp.rambler.ru adds 517ms and costs ~₽153/month
- mc.webvisor.org adds 403ms and costs ~₽119/month
- yandex.ru adds 364ms and costs ~₽108/month
- www.gazeta.ru adds 180ms 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
www.gazeta.ru takes 2018ms 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 687ms 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
st.top100.ru takes 592ms 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
74% of st.top100.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
ssp.rambler.ru takes 517ms 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.webvisor.org takes 403ms 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.webvisor.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
yandex.ru takes 364ms 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 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
www.gazeta.ru takes 180ms 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
80% 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