Performance
· 27 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.
6.38 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.38 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.78 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.113
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
13.74 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.
22.53 s
Page Load Progression
FPage Weight BudgetAction9.4 MB transferred, 198 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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
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 ImpactAction99% third-party, 0 ms blockingFIX
FJS Execution CostAction12509ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdn.zadelrf.ru/wp-content/plugins/wp-sentry-integration/public/wp-sentry-browser.tracing.min.js | 3537ms | 1036ms | 16ms | 3rd |
| https://zadelrf.ru/ | 2677ms | 375ms | 16ms | 1st |
| https://mc.yandex.ru/metrika/tag.js | 2072ms | 1741ms | 37ms | 3rd |
| Unattributable | 1098ms | 31ms | 0ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-WS3ZVHF | 693ms | 521ms | 44ms | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/jquery-3.7.0.js | 507ms | 324ms | 13ms | 3rd |
| https://zadel.7sites.ru/bitrix/js/imopenlines/widget/script.min.js?r=1780547462-23 | 485ms | 312ms | 167ms | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/main.js | 364ms | 103ms | 65ms | 3rd |
| https://zadel.7sites.ru/upload/crm/site_button/loader_12_wiwcbe.js?29677697 | 252ms | 92ms | 37ms | 3rd |
| https://zadel.7sites.ru/bitrix/js/crm/site/form/dist/app.bundle.min.js?20609 | 240ms | 61ms | 49ms | 3rd |
Showing top 10 of 15 scripts
FJS BundlesAction51 scripts, 980 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.callibri.ru/widget_v2.min.js | 431 KB | 361 KB (85%) | ✓ | 3rd |
| https://zadel.7sites.ru/bitrix/js/imopenlines/widget/script.min.js?r=1780547462-23 | 346 KB | 230 KB (66%) | ✓ | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/de/build/bundle746f9292f110c53db6a9.js | 124 KB | 81 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WS3ZVHF | 116 KB | 67 KB (58%) | ✓ | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/main.js | 84 KB | 60 KB (72%) | ✗ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 87 KB | 44 KB (51%) | ✓ | 3rd |
| https://zadel.7sites.ru/bitrix/js/crm/site/form/dist/app.bundle.min.js?20609 | 108 KB | 43 KB (40%) | ✓ | 3rd |
| https://cdn.callibri.ru/callibri.js | 71 KB | 35 KB (51%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/@fancyapps/ui@6.1/dist/fancybox/fancybox.umd.js | 37 KB | 32 KB (89%) | ✓ | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/swiper.min.js | 40 KB | 28 KB (71%) | ✓ | 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 InventoryAction198 resources · 9.4 MB · 980 KB savings availableFIX
~980.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 198 resources | 9.4 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
no-store, no-cache, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
CImage OptimizationAction66 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
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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
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 Loading5 fonts (205 KB)PASS
Web fonts
5
205 KB total
Render-blocking
0
of 5
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 Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall198 requests over 11645msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 3537ms | 39 KB | — | ₽1841/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 2072ms | 87 KB | 51% | ₽1078/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 693ms | 116 KB | 58% | ₽361/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 507ms | 30 KB | — | ₽264/mo | Costly |
zadel.7sites.ru zadel.7sites.ru | Other | 485ms | 346 KB | 66% | ₽253/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 364ms | 84 KB | 72% | ₽190/mo | Costly |
zadel.7sites.ru zadel.7sites.ru | Other | 252ms | 56 KB | — | ₽131/mo | Costly |
zadel.7sites.ru zadel.7sites.ru | Other | 240ms | 108 KB | 40% | ₽125/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 220ms | 124 KB | 66% | ₽115/mo | Costly |
cdn.callibri.ru cdn.callibri.ru | Other | 170ms | 71 KB | 51% | ₽88/mo | Costly |
mc.yandex.com mc.yandex.com | Other | 82ms | 23 KB | — | ₽42/mo | Optional |
cdn.callibri.ru cdn.callibri.ru | Other | 60ms | 431 KB | 85% | ₽31/mo | Optional |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 52ms | 1 KB | — | ₽27/mo | Optional |
These scripts may cost more than they're worth
- cdn.zadelrf.ru adds 3537ms and costs ~₽1841/month
- mc.yandex.ru adds 2072ms and costs ~₽1078/month
- Google Tag Manager adds 693ms and costs ~₽361/month
- cdn.zadelrf.ru adds 507ms and costs ~₽264/month
- zadel.7sites.ru adds 485ms and costs ~₽253/month
- cdn.zadelrf.ru adds 364ms and costs ~₽190/month
- zadel.7sites.ru adds 252ms and costs ~₽131/month
- zadel.7sites.ru adds 240ms and costs ~₽125/month
- cdn.zadelrf.ru adds 220ms and costs ~₽115/month
- cdn.callibri.ru adds 170ms and costs ~₽88/month
70% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
cdn.zadelrf.ru takes 3537ms 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 2072ms 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
Google Tag Manager takes 693ms 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
58% of Google Tag Manager'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
cdn.zadelrf.ru takes 507ms 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
zadel.7sites.ru takes 485ms 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
66% of zadel.7sites.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
cdn.zadelrf.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
72% of cdn.zadelrf.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
zadel.7sites.ru takes 252ms 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
zadel.7sites.ru takes 240ms 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.zadelrf.ru takes 220ms 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
66% of cdn.zadelrf.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
cdn.callibri.ru takes 170ms 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 cdn.callibri.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
85% of cdn.callibri.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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-05-07 — 2026-06-03)
LCP (p75)
5800 ms
36% good
INP (p75)
75 ms
94% good
CLS (p75)
0.160
54% good
FCP (p75)
5411 ms
TTFB (p75)
4768 ms
Image Optimization78 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
78
Total Size
0 KB
Oversized
39