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.
870 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.09 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.027
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.38 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.
1.09 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 sDThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS BundlesAction22 scripts, 486 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 | 105 KB (81%) | ✓ | 3rd |
| https://sgtm.ixbt.site/al/gtag/js?id=G-ZEN51QVN2K&l=analytics&cx=c>m=4e64k1&sign=0980b070d5ecb1c87017633fe2f6da064619c8355c706e232b0e52ddc560a300_20260422 | 168 KB | 65 KB (39%) | ✓ | 3rd |
| https://jitsu.ixbt.site/p.js | 135 KB | 60 KB (45%) | ✗ | 3rd |
| https://sgtm.ixbt.site/al/pv.js | 117 KB | 59 KB (50%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 53 KB (51%) | ✓ | 3rd |
| https://www.ixbt.com/build/assets/client-BsCF7SCt.js | 57 KB | 50 KB (89%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 48 KB (57%) | ✓ | 3rd |
| https://yandex.ru/ads/system/header-bidding.js | 37 KB | 24 KB (67%) | ✓ | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 32 KB | 22 KB (68%) | ✓ | 3rd |
| https://www.ixbt.com/build/assets/alpine-plugins-Dq8kYZi-.js | 25 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 InventoryAction117 resources · 1.5 MB · 486 KB savings availableFIX
~486.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 117 resources | 1.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.5 MB transferred, 117 requestsREVIEW
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
BImage Optimization60 images, 0 KB saveableREVIEW
BJS Execution Cost673ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.ixbt.com/ | 211ms | 8ms | 3ms | 3rd |
| https://yandex.ru/ads/system/context.js | 177ms | 109ms | 8ms | 3rd |
| Unattributable | 157ms | 33ms | 0ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js | 71ms | 40ms | 4ms | 3rd |
| https://sgtm.ixbt.site/al/gtag/js?id=G-ZEN51QVN2K&l=analytics&cx=c>m=4e64k1&sign=0980b070d5ecb1c87017633fe2f6da064619c8355c706e232b0e52ddc560a300_20260422 | 59ms | 47ms | 11ms | 3rd |
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 (84 KB)PASS
Web fonts
3
84 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 Waterfall117 requests over 3962msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.ixbt.com www.ixbt.com | Other | 211ms | 74 KB | — | ₽62/mo | Costly |
yandex.ru yandex.ru | Other | 177ms | 105 KB | 51% | ₽52/mo | Costly |
Unattributable Unattributable | Other | 157ms | 0 KB | — | ₽46/mo | Optional |
yastatic.net yastatic.net | Other | 71ms | 32 KB | 68% | ₽21/mo | Optional |
sgtm.ixbt.site sgtm.ixbt.site | Other | 59ms | 168 KB | 39% | ₽17/mo | Optional |
These scripts may cost more than they're worth
- www.ixbt.com adds 211ms and costs ~₽62/month
- yandex.ru adds 177ms and costs ~₽52/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.ixbt.com takes 211ms 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 177ms 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 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
68% 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