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https://gosuslugi.ru

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
2
REVIEW
2
PASS
11
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

70
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
81
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
82
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

786 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

786 ms

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

4.54 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

867 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

11.67 s

Page Load Progression

429 ms
858 ms
1.3 s
1.7 s
2.1 s
2.6 s
3.0 s
3.4 s
Checks
17
11 PASS 2 REVIEW 2 FIX
D
Third-Party Impact
Action
88% third-party, 0 ms blocking
FIX
88% third-party, 0 ms blocking
Warning::
Third-party code accounts for 88% of page weight (208.1 KiB of 236.3 KiB)
Info::
Third-party blocking time is low (0 ms)
88%
First-party Third-party
F
JS Execution Cost
Action
11139ms total JS execution
FIX
11139ms total JS execution
Warning::
https://gosuslugi.ru/__jsch/static/script.js: 10457ms CPU time
Warning::
https://gosuslugi.ru/: 467ms CPU time
Info::
Unattributable: 216ms CPU time
Info::
Third-party scripts: 216ms (2% of total)

Main Thread Breakdown

Script Evaluation 90% Other 6%
ScriptTotalScriptingParse/CompileParty
https://gosuslugi.ru/__jsch/static/script.js10457ms10028ms5ms1st
https://gosuslugi.ru/467ms4ms1ms1st
Unattributable216ms5ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
Cache-Control header is set
Got: no-cache
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

no-cache

DirectiveValueMeaning
no-cacheCache but always revalidate first
A+
Page Weight Budget
236 KB transferred, 5 requests
PASS
236 KB transferred, 5 requests
Info::
Page weighs 258 KB (236 KB transferred)
Info::
Fonts are 208 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 208 KB
Info::
5 HTTP requests
Info::
Estimated 0.05 g CO2 per page load
236 KB / 2.4 MB budget
236 KB transferred
5 requests
0.05 g CO2 per page load
Fonts 208.1 KiB 88%
JavaScript 18.3 KiB 8%
HTML 9.5 KiB 4%
Other 334 B 0%
0 2.4 MB 4.9 MB
Under budget

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
2 fonts (208 KB)
PASS
2 fonts (208 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

208 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 786 ms LCP 786 mshttps://gu-st.ru/portal-st/lib-assets/fonts/Lato-Regular.woff2Lato-Regular.woff2 https://gu-st.ru/portal-st/lib-assets/fonts/Lato-Regular.woff2 — 179.4 KiB — 387 ms — font-display: swaphttps://gu-st.ru/portal-st/lib-assets/fonts/Lato-Bold.woff2Lato-Bold.woff2 https://gu-st.ru/portal-st/lib-assets/fonts/Lato-Bold.woff2 — 28.7 KiB — 438 ms — font-display: swap
Lato-Regular.woff2 woff2 swap
Size 179 KB
Load time 387 ms
Start 222 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Lato-Bold.woff2 woff2 swap
Size 29 KB
Load time 438 ms
Start 226 ms
Risk FOUT — text flashes from fallback to web font
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 ~90 KB and ~180 ms

A+
JS Bundles
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://gosuslugi.ru/__jsch/static/script.js18 KB1st
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
preload
2
dns-prefetch
prefetch

2 resource hints configured

A
Page Weight Inventory
5 resources · 236 KB · 0 KB savings available
PASS
5 resources · 236 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 236 KB
Warning::
2 third-party resources (88% of weight)
5 resources · 236.3 KiB · 2 third-party Within 1MB page-weight target
Font 88% · 208.1 KiB
JavaScript 8% · 18.3 KiB
Document 4% · 9.5 KiB
Other 0% · 334 B
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
5 requests over 929ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 786 ms LCP 786 mshttps://gosuslugi.ru// https://gosuslugi.ru/ — 200 — 9.5 KiB — 207 ms — http/1.1https://gu-st.ru/portal-st/lib-assets/fonts/Lato-Regular.woff2gu-st.ru/portal-st/lib-assets/fonts... https://gu-st.ru/portal-st/lib-assets/fonts/Lato-Regular.woff2 — 200 — 179.4 KiB — 387 ms — h2https://gu-st.ru/portal-st/lib-assets/fonts/Lato-Bold.woff2gu-st.ru/portal-st/lib-assets/fonts... https://gu-st.ru/portal-st/lib-assets/fonts/Lato-Bold.woff2 — 200 — 28.7 KiB — 438 ms — h2https://gosuslugi.ru/__jsch/static/script.js/__jsch/static/script.js https://gosuslugi.ru/__jsch/static/script.js — 200 — 18.3 KiB — 127 ms — http/1.1https://gosuslugi.ru/__jsch/schema.json/__jsch/schema.json https://gosuslugi.ru/__jsch/schema.json — 200 — 334 B — 68 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
2% of JavaScript execution is third-party
First-party Third-party 216ms · 0KB · ₽64/mo
Unattributable
Other
Costly
Execution 216ms
Transfer 0 KB
Monthly Cost ₽64/mo

These scripts may cost more than they're worth

  • Unattributable adds 216ms and costs ~₽64/month

Unattributable takes 216ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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