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.
8.21 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.02 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
817 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.193
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.36 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.
16.59 s
Page Load Progression
DPage Weight BudgetAction2.5 MB transferred, 154 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
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 ImpactAction98% third-party, 0 ms blockingFIX
FJS Execution CostAction6455ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://mc.yandex.ru/metrika/tag.js | 2489ms | 2089ms | 30ms | 3rd |
| https://cdn.zadelrf.ru/wp-content/plugins/wp-sentry-integration/public/wp-sentry-browser.tracing.min.js | 1113ms | 715ms | 10ms | 3rd |
| Unattributable | 1025ms | 23ms | 0ms | 1st |
| https://zadelrf.ru/category/rezhushhij-instrument/plastiny-tverdosplavnye/ | 609ms | 38ms | 13ms | 1st |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/main.js | 497ms | 61ms | 65ms | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/jquery-3.7.0.js | 229ms | 161ms | 7ms | 3rd |
| https://mc.yandex.com/metrika-tags/_/tag_ec.js | 181ms | 135ms | 6ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WS3ZVHF | 122ms | 98ms | 22ms | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/de/build/bundle746f9292f110c53db6a9.js | 113ms | 44ms | 35ms | 3rd |
| https://cdn.talkomat.ru/js/libs/0.0.9-fix1/talkomat.min.js | 78ms | 68ms | 4ms | 3rd |
FJS BundlesAction55 scripts, 899 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://cdn.talkomat.ru/js/libs/0.0.9-fix1/talkomat.min.js | 422 KB | 152 KB (36%) | ✓ | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/de/build/bundle746f9292f110c53db6a9.js | 124 KB | 81 KB (66%) | ✓ | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/main.js | 84 KB | 70 KB (84%) | ✗ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WS3ZVHF | 116 KB | 67 KB (58%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 87 KB | 43 KB (50%) | ✓ | 3rd |
| https://cdn.callibri.ru/callibri.js | 71 KB | 35 KB (50%) | ✓ | 3rd |
| https://cdn.zadelrf.ru/wp-content/themes/zadelrf/assets/js/swiper.min.js | 40 KB | 34 KB (86%) | ✓ | 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/plugins/woo-product-filter/modules/woofilters/js/frontend.woofilters.js | 27 KB | 23 KB (85%) | ✗ | 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 InventoryAction154 resources · 2.5 MB · 899 KB savings availableFIX
~898.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 154 resources | 2.5 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 OptimizationAction17 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
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 Loading3 fonts (149 KB)PASS
Web fonts
3
149 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 Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 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 Waterfall154 requests over 33830msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
mc.yandex.ru mc.yandex.ru | Other | 2489ms | 87 KB | 50% | ₽1296/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 1113ms | 39 KB | — | ₽579/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 497ms | 84 KB | 84% | ₽259/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 229ms | 30 KB | — | ₽119/mo | Costly |
mc.yandex.com mc.yandex.com | Other | 181ms | 23 KB | — | ₽94/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 122ms | 116 KB | 58% | ₽63/mo | Costly |
cdn.zadelrf.ru cdn.zadelrf.ru | Other | 113ms | 124 KB | 66% | ₽59/mo | Costly |
cdn.talkomat.ru cdn.talkomat.ru | Other | 78ms | 422 KB | 36% | ₽41/mo | Optional |
These scripts may cost more than they're worth
- mc.yandex.ru adds 2489ms and costs ~₽1296/month
- cdn.zadelrf.ru adds 1113ms and costs ~₽579/month
- cdn.zadelrf.ru adds 497ms and costs ~₽259/month
- cdn.zadelrf.ru adds 229ms and costs ~₽119/month
- mc.yandex.com adds 181ms and costs ~₽94/month
- Google Tag Manager adds 122ms and costs ~₽63/month
- cdn.zadelrf.ru adds 113ms and costs ~₽59/month
75% 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
mc.yandex.ru takes 2489ms 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
cdn.zadelrf.ru takes 1113ms 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 497ms 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
84% 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.zadelrf.ru takes 229ms 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.com takes 181ms 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
Google Tag Manager takes 122ms 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 113ms 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
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 Optimization72 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
72
Total Size
0 KB
Oversized
10