Performance
· 24 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.
782 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.24 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.
0.492
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.31 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.
5.26 s
Page Load Progression
FPage Weight BudgetAction18.9 MB transferred, 115 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
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
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction76 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
CJS Execution CostAction1088ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://vera-m.ru/saransk-p/ | 510ms | 5ms | 1ms | 1st |
| Unattributable | 179ms | 5ms | 0ms | 1st |
| https://top-fwz1.mail.ru/js/code.js | 134ms | 123ms | 1ms | 3rd |
| https://vera-m.ru/templates/velmaster_invitro/js/jquery.min.js | 128ms | 73ms | 2ms | 1st |
| https://mc.yandex.ru/metrika/tag.js | 70ms | 52ms | 6ms | 3rd |
| https://privacy-cs.mail.ru/static/sync-loader.js | 66ms | 57ms | 1ms | 3rd |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CDocument CompressionActionDocument response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction115 resources · 18.9 MB · 45 KB savings availableREVIEW
~45.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 115 resources | 18.9 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact1% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (64 KB)PASS
Web fonts
2
64 KB total
Render-blocking
0
of 2
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+JS Bundles14 scripts, 45 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://mc.yandex.ru/metrika/tag.js | 90 KB | 45 KB (51%) | ✓ | 3rd |
| https://vera-m.ru/templates/velmaster_invitro/js/jquery.min.js | 30 KB | — | ✓ | 1st |
| https://vera-m.ru/media/system/js/messages.min.js?9a4811 | 2 KB | — | ✓ | 1st |
| https://vera-m.ru/media/system/js/core.min.js?a3d8f8 | 3 KB | — | ✓ | 1st |
| https://vera-m.ru/templates/velmaster_invitro/js/jquery.fancybox.min.js | 17 KB | — | ✓ | 1st |
| https://vera-m.ru/templates/velmaster_invitro/js/owl-carousel/owl.carousel.min.js?v=2.3.4 | 11 KB | — | ✓ | 1st |
| https://vera-m.ru/templates/velmaster_invitro/js/script.js?v=2609256 | 2 KB | — | ✓ | 1st |
| https://vera-m.ru/modules/mod_zapis_priem/js/jquery.datetimepicker.full.min.js | 19 KB | — | ✓ | 1st |
| https://top-fwz1.mail.ru/js/code.js | 20 KB | — | ✓ | 3rd |
| https://vera-m.ru/media/mod_menu/js/menu.min.js?5a565f | 2 KB | — | ✓ | 1st |
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
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall115 requests over 2825msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
top-fwz1.mail.ru top-fwz1.mail.ru | Other | 134ms | 20 KB | — | ₽40/mo | Optional |
mc.yandex.ru mc.yandex.ru | Other | 70ms | 90 KB | 51% | ₽21/mo | Optional |
privacy-cs.mail.ru privacy-cs.mail.ru | Other | 66ms | 22 KB | — | ₽20/mo | Optional |
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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-08-30 — 2026-09-26)
LCP (p75)
1553 ms
88% good
INP (p75)
128 ms
90% good
CLS (p75)
0.000
95% good
FCP (p75)
1075 ms
TTFB (p75)
638 ms
Image Optimization16 images, 1907 KB total, 912 KB wastedINFO
Image Optimization Audit
Total Images
16
Total Size
1907 KB
Oversized
6
Wasted
912 KB