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.
1.42 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.86 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
17 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.036
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.83 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.
2.89 s
Page Load Progression
FPage Weight BudgetAction3.3 MB transferred, 141 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
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
DJS BundlesAction38 scripts, 415 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://chat.key-hub.ru/assets/index-CaaZ6kQN.js | 375 KB | 265 KB (72%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-TXX6QVMQ | 172 KB | 72 KB (42%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 89 KB | 44 KB (50%) | ✓ | 3rd |
| https://key-hub.ru/wp-content/themes/key/assets/js/all.min.js | 43 KB | 33 KB (77%) | ✓ | 1st |
| https://key-hub.ru/wp-includes/js/dist/hooks.min.js | 2 KB | — | ✓ | 1st |
| https://key-hub.ru/wp-content/plugins/google-site-kit/dist/assets/js/googlesitekit-consent-mode-755f1678e260138d789e.js | 25 KB | — | ✓ | 1st |
| https://key-hub.ru/wp-content/plugins/wp-yandex-metrika/assets/woocommerce.min.js | 2 KB | — | ✓ | 1st |
| https://key-hub.ru/wp-content/plugins/wp-yandex-metrika/assets/contactFormSeven.min.js | 0 KB | — | ✓ | 1st |
| https://key-hub.ru/wp-content/plugins/ajax-live-search/assets/live-search.js | 1 KB | — | ✓ | 1st |
| https://unpkg.com/aos@2.3.1/dist/aos.js | 5 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
DPage Weight InventoryAction141 resources · 3.3 MB · 415 KB savings availableFIX
~414.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 141 resources | 3.3 MiB | ||||||
CImage OptimizationAction61 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
CJS Execution CostAction1445ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://key-hub.ru/ | 664ms | 13ms | 7ms | 1st |
| https://mc.yandex.ru/metrika/tag.js | 242ms | 205ms | 6ms | 3rd |
| Unattributable | 241ms | 10ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=GT-TXX6QVMQ | 93ms | 76ms | 13ms | 3rd |
| https://chat.key-hub.ru/assets/index-CaaZ6kQN.js | 71ms | 62ms | 2ms | 3rd |
| https://chat.key-hub.ru/api/widget-loader.js | 68ms | 67ms | 1ms | 3rd |
| https://key-hub.ru/wp-includes/js/jquery/jquery.min.js | 66ms | 55ms | 2ms | 1st |
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
CAsset CompressionAction1 of 2 asset hosts serve text uncompressedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
AThird-Party Impact28% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (272 KB)PASS
Web fonts
8
272 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~15 KB and ~30 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=300 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
AHTTP Cachingmax-age=300 (5 minutes)PASS
private, max-age=300, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| max-age | 300 | Cache for 5 minutes |
| must-revalidate | — | Must recheck with server after expiry |
Network Waterfall141 requests over 3184msINFO
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 | 242ms | 89 KB | 50% | ₽126/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 93ms | 172 KB | 42% | ₽48/mo | Optional |
chat.key-hub.ru chat.key-hub.ru | Other | 71ms | 375 KB | 72% | ₽37/mo | Optional |
chat.key-hub.ru chat.key-hub.ru | Other | 68ms | 3 KB | — | ₽35/mo | Optional |
These scripts may cost more than they're worth
- mc.yandex.ru adds 242ms and costs ~₽126/month
mc.yandex.ru takes 242ms 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
72% of chat.key-hub.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 (2026-08-19 — 2026-09-15)
LCP (p75)
2085 ms
83% good
INP (p75)
69 ms
97% good
CLS (p75)
0.130
74% good
FCP (p75)
1905 ms
TTFB (p75)
1074 ms
Image Optimization77 images, 2007 KB total, 1315 KB wastedINFO
Image Optimization Audit
Total Images
77
Total Size
2007 KB
Oversized
21
Wasted
1315 KB