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https://tass.ru

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
2
REVIEW
3
PASS
8
INFO
2

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

Mobile Desktop
85
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
69
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
70
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.

753 ms

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

1.10 s

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

297 ms

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

0.002

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

753 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.

1.10 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
8 PASS 3 REVIEW 2 FIX
D
Third-Party Impact
Action
99% third-party, 0 ms blocking
FIX
99% third-party, 0 ms blocking
Warning::
Third-party code accounts for 99% of page weight (249.1 KiB of 252.3 KiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
JS Execution Cost
Action
1055ms total JS execution
REVIEW
1055ms total JS execution
Warning::
https://servicepipe.ru/static/checkjs/174673/ulLGS...: 885ms CPU time
Info::
Unattributable: 170ms CPU time
Warning::
Third-party scripts: 1055ms (100% of total)

Main Thread Breakdown

Script Evaluation 73% Style & Layout 10% Other 10% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://servicepipe.ru/static/checkjs/174673/ulLGSXod1i.js885ms700ms8ms3rd
Unattributable170ms80ms0ms3rd
B
JS Bundles
5 scripts, 95 KB unused
REVIEW
5 scripts, 95 KB unused
Warning::
https://servicepipe.ru/static/jsrsasign-all-min.js: 66 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://servicepipe.ru/static/checkjs/174673/ulLGS...: 29 KB unused (19%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 95 KB
95 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://servicepipe.ru/static/jsrsasign-all-min.js85 KB66 KB (78%)✓3rd
https://servicepipe.ru/static/checkjs/174673/ulLGSXod1i.js154 KB29 KB (19%)✓3rd
blob:https://tass.ru/1be7ccc9-69d6-46e9-9b0a-66ef5c8b0cd2-0 KB—✓3rd
blob:https://tass.ru/82d2eae8-1e9a-40c0-80db-5521b0ea9326-0 KB—✓3rd
blob:https://tass.ru/b6c68371-5029-479f-83a1-6fd62d74445e-0 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
252 KB transferred, 16 requests
PASS
252 KB transferred, 16 requests
Info::
Page weighs 694 KB (252 KB transferred)
Info::
16 HTTP requests
Info::
Estimated 0.05 g CO2 per page load
252 KB / 2.4 MB budget
252 KB transferred
16 requests
0.05 g CO2 per page load
JavaScript 238.6 KiB 95%
Images 10.5 KiB 4%
HTML 1.8 KiB 1%
Other 1.3 KiB 1%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget
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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 11 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Page Weight Inventory
16 resources · 252 KB · 95 KB savings available
PASS
16 resources · 252 KB · 95 KB savings available
Info::
Within 1MB page-weight target
Got: 252 KB
Info::
~95 KB of savings available
Warning::
12 third-party resources (99% of weight)
16 resources · 252.3 KiB · 12 third-party Within 1MB page-weight target
JavaScript 95% · 238.6 KiB
Image 5% · 11.8 KiB
Document 1% · 1.8 KiB
Other 0% · 0 B

~95.1 KiB of savings available

Remove unused JavaScript: 95.1 KiB
Network Waterfall
16 requests over 3198ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 753 ms LCP 1.1 shttps://tass.ru// https://tass.ru/ — 200 — 1.1 KiB — 123 ms — h2https://servicepipe.ru/static/jsrsasign-all-min.jsservicepipe.ru/static/jsrsasign-all... https://servicepipe.ru/static/jsrsasign-all-min.js — 200 — 85.0 KiB — 265 ms — h2https://servicepipe.ru/static/checkjs/174673/ulLGSXod1i.jsservicepipe.ru/static/checkjs/17467... https://servicepipe.ru/static/checkjs/174673/ulLGSXod1i.js — 200 — 153.6 KiB — 478 ms — h2https://servicepipe.ru/loaders/default.gifservicepipe.ru/loaders/default.gif https://servicepipe.ru/loaders/default.gif — 200 — 10.5 KiB — 292 ms — h2blob:https://tass.ru/1be7ccc9-69d6-46e9-9b0a-66ef5c8b0cd2tass.ru/1be7ccc9-69d6-46e9-9b0a-66e... blob:https://tass.ru/1be7ccc9-69d6-46e9-9b0a-66ef5c8b0cd2 — 200 — -1 B — 730 ms — blobblob:https://tass.ru/82d2eae8-1e9a-40c0-80db-5521b0ea9326tass.ru/82d2eae8-1e9a-40c0-80db-552... blob:https://tass.ru/82d2eae8-1e9a-40c0-80db-5521b0ea9326 — 200 — -1 B — 683 ms — blobblob:https://tass.ru/b6c68371-5029-479f-83a1-6fd62d74445etass.ru/b6c68371-5029-479f-83a1-6fd... blob:https://tass.ru/b6c68371-5029-479f-83a1-6fd62d74445e — 200 — -1 B — 171 ms — blobchrome-extension://invalid/invalid/ chrome-extension://invalid/ — -1 — 0 B — 87 ms — chrome-extension://invalid/invalid/ chrome-extension://invalid/ — -1 — 0 B — 12 ms — chrome-extension://invalid/invalid/ chrome-extension://invalid/ — -1 — 0 B — 10 ms — chrome-extension://invalid/invalid/ chrome-extension://invalid/ — -1 — 0 B — 3 ms — https://tass.ru/favicon.ico/favicon.ico https://tass.ru/favicon.ico — 200 — 679 B — 83 ms — h2chrome-extension://invalid/invalid/ chrome-extension://invalid/ — -1 — 0 B — 4 ms — chrome-extension://invalid/invalid/ chrome-extension://invalid/ — -1 — 0 B — 3 ms — https://tass.ru// https://tass.ru/ — 403 — 788 B — 49 ms — h2https://tass.ru/favicon.ico/favicon.ico https://tass.ru/favicon.ico — 200 — 679 B — 86 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 1055ms · 154KB · ₽312/mo
servicepipe.ru
Other
Costly
Execution 885ms
Transfer 154 KB
Unused 19%
Monthly Cost ₽262/mo
Unattributable
Other
Costly
Execution 170ms
Transfer 0 KB
Monthly Cost ₽50/mo

These scripts may cost more than they're worth

  • servicepipe.ru adds 885ms and costs ~₽262/month
  • Unattributable adds 170ms and costs ~₽50/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

servicepipe.ru takes 885ms 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

Unattributable takes 170ms 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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