Performance
· 17 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.
5.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.65 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
557 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.079
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.72 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.
20.02 s
Page Load Progression
601 ms 1.2 s 1.8 s 2.4 s 3.0 s
3.6 s
4.2 s
4.8 sFPage Weight BudgetAction4.6 MB transferred, 182 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
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 ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4282ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.reg.ru/ | 1246ms | 144ms | 2ms | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/uUESCGhJ.js | 912ms | 794ms | 2ms | 3rd |
| Unattributable | 884ms | 309ms | 0ms | 3rd |
| https://yandex.ru/ads/system/context.js | 451ms | 350ms | 86ms | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/D8GZKfwo.js | 402ms | 325ms | 3ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 133ms | 108ms | 20ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304600/24ec1381af6bc52b.js | 126ms | 72ms | 53ms | 3rd |
| https://yastatic.net/partner-code-bundles/1304600/e32796170bd90254.js | 69ms | 52ms | 12ms | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/Bde68Y2H.js | 59ms | 52ms | 0ms | 3rd |
DJS BundlesAction62 scripts, 329 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://yastatic.net/partner-code-bundles/1304600/24ec1381af6bc52b.js | 130 KB | 104 KB (81%) | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/D8GZKfwo.js | 179 KB | 71 KB (40%) | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/uUESCGhJ.js | 108 KB | 58 KB (54%) | ✓ | 3rd |
| https://yandex.ru/ads/system/context.js | 105 KB | 54 KB (52%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 85 KB | 42 KB (50%) | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/DetQWPMv.js | 2 KB | — | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/ueQCI9-i.js | 3 KB | — | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/Dgbdi1SE.js | 0 KB | — | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/g2ZYFX25.js | 1 KB | — | ✓ | 3rd |
| https://showcase-static.reg.ru/_nuxt/static/CjAUL01h.js | 1 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
DPage Weight InventoryAction182 resources · 4.6 MB · 329 KB savings availableFIX
~328.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 182 resources | 4.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction34 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
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 (105 KB)PASS
Web fonts
3
105 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 Hints35 hints, 0 missing preconnectsPASS
Current Resource Hints
35 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall182 requests over 5352msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.reg.ru www.reg.ru | Other | 1246ms | 69 KB | — | ₽648/mo | Costly |
showcase-static.reg.ru showcase-static.reg.ru | Other | 912ms | 108 KB | 54% | ₽475/mo | Costly |
Unattributable Unattributable | Other | 884ms | 0 KB | — | ₽460/mo | Costly |
yandex.ru yandex.ru | Other | 451ms | 105 KB | 52% | ₽235/mo | Costly |
showcase-static.reg.ru showcase-static.reg.ru | Other | 402ms | 179 KB | 40% | ₽209/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 133ms | 85 KB | 50% | ₽69/mo | Costly |
yastatic.net yastatic.net | Other | 126ms | 130 KB | 81% | ₽65/mo | Costly |
yastatic.net yastatic.net | Other | 69ms | 32 KB | — | ₽36/mo | Optional |
showcase-static.reg.ru showcase-static.reg.ru | Other | 59ms | 2 KB | — | ₽31/mo | Optional |
These scripts may cost more than they're worth
- www.reg.ru adds 1246ms and costs ~₽648/month
- showcase-static.reg.ru adds 912ms and costs ~₽475/month
- Unattributable adds 884ms and costs ~₽460/month
- yandex.ru adds 451ms and costs ~₽235/month
- showcase-static.reg.ru adds 402ms and costs ~₽209/month
- mc.yandex.ru adds 133ms and costs ~₽69/month
- yastatic.net adds 126ms and costs ~₽65/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.reg.ru takes 1246ms 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
showcase-static.reg.ru takes 912ms 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
54% of showcase-static.reg.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
Unattributable takes 884ms 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 451ms 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
52% 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
showcase-static.reg.ru takes 402ms 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 133ms 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
yastatic.net takes 126ms 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
81% 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