Performance
· 22 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.
14.81 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
27.91 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
5.11 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.423
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
14.81 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.
36.33 s
Page Load Progression
FPage Weight BudgetAction7.6 MB transferred, 998 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
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
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
FJS Execution CostAction51122ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://yastatic.net/s3/front-maps-static/maps-front-jsapi-v2-1/2.1.79-19906405/out/release/full.js | 26259ms | 3527ms | 343ms | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 6258ms | 4987ms | 202ms | 3rd |
| https://permsk.stores-apple.com/ | 5237ms | 214ms | 88ms | 1st |
| https://permsk.stores-apple.com/bitrix/cache/js/s1/prymery/template_03c098e168d7e4cb79d6929eb660a072/template_03c098e168d7e4cb79d6929eb660a072_v1.js?1785042201891932 | 4497ms | 2052ms | 87ms | 1st |
| Unattributable | 3698ms | 49ms | 0ms | 1st |
| https://app.comagic.ru/static/cs.min.js?k=SBwg89R1ysyZOTzuusPzFF_1Z7z4RxMm | 1948ms | 1667ms | 24ms | 3rd |
| https://permsk.stores-apple.com/bitrix/js/main/core/core.js?1784358162333925 | 883ms | 752ms | 46ms | 1st |
| https://api.s.mindbox.ru/scripts/v1/tracker.js | 607ms | 326ms | 116ms | 3rd |
| https://privacy-cs.mail.ru/static/sync-loader.js | 508ms | 448ms | 18ms | 3rd |
| https://crm.repremium.ru/bitrix/js/imopenlines/widget/script.min.js?r=1785332463-31 | 424ms | 276ms | 129ms | 3rd |
Showing top 10 of 15 scripts
FJS BundlesAction78 scripts, 2.8 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://yastatic.net/s3/front-maps-static/maps-front-jsapi-v2-1/2.1.79-19906405/out/release/full.js | 689 KB | 432 KB (63%) | ✓ | 3rd |
| https://crm.repremium.ru/bitrix/js/imopenlines/widget/script.min.js?r=1785332463-31 | 287 KB | 202 KB (71%) | ✓ | 3rd |
| https://permsk.stores-apple.com/bitrix/cache/js/s1/prymery/template_03c098e168d7e4cb79d6929eb660a072/template_03c098e168d7e4cb79d6929eb660a072_v1.js?1785042201891932 | 207 KB | 147 KB (71%) | ✗ | 1st |
| https://app.comagic.ru/static/cs.min.js?k=SBwg89R1ysyZOTzuusPzFF_1Z7z4RxMm | 100 KB | 64 KB (64%) | ✓ | 3rd |
| https://permsk.stores-apple.com/bitrix/js/main/core/core.js?1784358162333925 | 76 KB | 52 KB (68%) | ✗ | 1st |
| https://mc.yandex.ru/metrika/tag.js | 0 KB | 43 KB (49%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 0 KB | 43 KB (49%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 0 KB | 43 KB (49%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 0 KB | 43 KB (49%) | ✓ | 3rd |
| https://mc.yandex.ru/metrika/tag.js | 0 KB | 43 KB (49%) | ✓ | 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 InventoryAction998 resources · 7.6 MB · 2.8 MB savings availableFIX
~2.8 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 998 resources | 7.6 MiB | ||||||
DHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction235 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
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 Impact34% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading95 fonts (1401 KB)PASS
Web fonts
95
1401 KB total
Render-blocking
0
of 95
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
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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 ~960 KB and ~1920 ms
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
AServer Response Intelligence2 server-response signal(s) detectedPASS
Network Waterfall998 requests over 19118msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
yastatic.net yastatic.net | Other | 26259ms | 689 KB | 63% | ₽7775/mo | Costly |
mc.yandex.ru mc.yandex.ru | Other | 6258ms | 0 KB | 49% | ₽1853/mo | Costly |
app.comagic.ru app.comagic.ru | Other | 1948ms | 100 KB | 64% | ₽577/mo | Costly |
api.s.mindbox.ru api.s.mindbox.ru | Other | 607ms | 28 KB | — | ₽180/mo | Costly |
privacy-cs.mail.ru privacy-cs.mail.ru | Other | 508ms | 22 KB | — | ₽150/mo | Costly |
crm.repremium.ru crm.repremium.ru | Other | 424ms | 287 KB | 71% | ₽125/mo | Costly |
mc.yandex.com mc.yandex.com | Other | 232ms | 25 KB | — | ₽69/mo | Costly |
top-fwz1.mail.ru top-fwz1.mail.ru | Other | 211ms | 20 KB | — | ₽63/mo | Costly |
crm.repremium.ru crm.repremium.ru | Other | 104ms | 54 KB | — | ₽31/mo | Optional |
These scripts may cost more than they're worth
- yastatic.net adds 26259ms and costs ~₽7775/month
- mc.yandex.ru adds 6258ms and costs ~₽1853/month
- app.comagic.ru adds 1948ms and costs ~₽577/month
- api.s.mindbox.ru adds 607ms and costs ~₽180/month
- privacy-cs.mail.ru adds 508ms and costs ~₽150/month
- crm.repremium.ru adds 424ms and costs ~₽125/month
- mc.yandex.com adds 232ms and costs ~₽69/month
- top-fwz1.mail.ru adds 211ms and costs ~₽63/month
71% 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
yastatic.net takes 26259ms 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
63% 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
mc.yandex.ru takes 6258ms 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
app.comagic.ru takes 1948ms 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
64% of app.comagic.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
api.s.mindbox.ru takes 607ms 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
privacy-cs.mail.ru takes 508ms 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
crm.repremium.ru takes 424ms 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
71% of crm.repremium.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
mc.yandex.com takes 232ms 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
top-fwz1.mail.ru takes 211ms 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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-06-30 — 2026-07-27)
LCP (p75)
2905 ms
69% good
INP (p75)
427 ms
40% good
CLS (p75)
0.090
77% good
FCP (p75)
2220 ms
TTFB (p75)
1102 ms