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https://telegram.me

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
3
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
96
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
52
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.

523 ms

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

1.23 s

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

0 ms

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.

1.50 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.

1.23 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
7 PASS 3 REVIEW 3 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.8 MiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
53 resources · 1.8 MB · 0 KB savings available
FIX
53 resources · 1.8 MB · 0 KB savings available
Warning::
Page weight 835 KB over 1MB target
Got: 1.8 MB Expected: ≤ 1 MB
Warning::
52 third-party resources (100% of weight)
Info::
4 resources over 200KB
53 resources · 1.8 MiB · 52 third-party 835.5 KiB over 1MB target
Image 54% · 995.1 KiB
Media 26% · 484.9 KiB
Other 8% · 151.6 KiB
Document 7% · 133.8 KiB
JavaScript 3% · 53.6 KiB
CSS 2% · 40.4 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-store

DirectiveValueMeaning
no-store—Never cache this response
C
Page Weight Budget
Action
1.8 MB transferred, 53 requests
REVIEW
1.8 MB transferred, 53 requests
Info::
Page weighs 3.8 MB (1.8 MB transferred)
Info::
53 HTTP requests
Info::
Estimated 0.38 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
53 requests
0.38 g CO2 per page load
Images 980.1 KiB 53%
Other 484.9 KiB 26%
Other 151.6 KiB 8%
Other 127.4 KiB 7%
Other 54.8 KiB 3%
CSS 40.4 KiB 2%
JavaScript 14.0 KiB 1%
HTML 6.2 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit
C
Image Optimization
Action
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Warning::
https://telegram.org/file/400780400931/3/L6HFfelQm... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://telegram.org/file/400780400115/5/Cv5ZyIIoO... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19 images 980 KB
0 oversized -0 KB
18 legacy format
2 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

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

Green Hosting

No green hosting detected

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+
JS Execution Cost
347ms total JS execution
PASS
347ms total JS execution
Info::
https://telegram.org/: 148ms CPU time
Info::
Unattributable: 104ms CPU time
Info::
https://telegram.org/js/tgsticker.js?31: 95ms CPU time
Warning::
Third-party scripts: 347ms (100% of total)

Main Thread Breakdown

Other 48% Script Evaluation 24% Style & Layout 15% Rendering 11%
ScriptTotalScriptingParse/CompileParty
https://telegram.org/148ms3ms0ms3rd
Unattributable104ms3ms0ms3rd
https://telegram.org/js/tgsticker.js?3195ms77ms1ms3rd
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+
JS Bundles
14 scripts, 0 KB unused
PASS
14 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://telegram.org/js/main.js?477 KB—✓3rd
https://telegram.org/js/tgsticker.js?317 KB—✓3rd
https://telegram.org/js/tgsticker-worker.js?140 KB—✓3rd
https://telegram.org/js/rlottie-wasm.js31 KB—✓3rd
https://telegram.org/js/pako-inflate.min.js9 KB—✓3rd
https://telegram.org/js/tgsticker-worker.js?140 KB—✓3rd
https://telegram.org/js/tgsticker-worker.js?140 KB—✓3rd
https://telegram.org/js/tgsticker-worker.js?140 KB—✓3rd
https://telegram.org/js/rlottie-wasm.js0 KB—✓3rd
https://telegram.org/js/rlottie-wasm.js0 KB—✓3rd
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
Network Waterfall
53 requests over 3150ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 523 ms LCP 1.2 shttps://telegram.me// https://telegram.me/ — 302 — 278 B — 574 ms — h2https://telegram.org/telegram.org/ https://telegram.org/ — 200 — 6.2 KiB — 597 ms — h2https://telegram.org/css/bootstrap.min.css?3telegram.org/css/bootstrap.min.css?... https://telegram.org/css/bootstrap.min.css?3 — 200 — 10.1 KiB — 202 ms — h2https://telegram.org/css/telegram.css?249telegram.org/css/telegram.css?249 https://telegram.org/css/telegram.css?249 — 200 — 30.3 KiB — 393 ms — h2https://telegram.org/file/400780400931/3/L6HFfelQm5E.394826.jpg/c82f3df5fb2bdde5f3telegram.org/file/400780400931/3/L6... https://telegram.org/file/400780400931/3/L6HFfelQm5E.394826.jpg/c82f3df5fb2bdde5f3 — 200 — 369.9 KiB — 980 ms — h2https://telegram.org/file/400780400115/5/Cv5ZyIIoOC0.324347.jpg/9b317921d13d7c6ddatelegram.org/file/400780400115/5/Cv... https://telegram.org/file/400780400115/5/Cv5ZyIIoOC0.324347.jpg/9b317921d13d7c6dda — 200 — 300.6 KiB — 986 ms — h2https://telegram.org/file/464001897/3/f0Go0rLpEwk.11343.png/dd4eeb46cc5efc0688telegram.org/file/464001897/3/f0Go0... https://telegram.org/file/464001897/3/f0Go0rLpEwk.11343.png/dd4eeb46cc5efc0688 — 200 — 11.3 KiB — 787 ms — h2https://telegram.org/file/464001737/4/Fn57W9l3xI0.15286.png/d4b936ecc2c939f4fatelegram.org/file/464001737/4/Fn57W... https://telegram.org/file/464001737/4/Fn57W9l3xI0.15286.png/d4b936ecc2c939f4fa — 200 — 15.2 KiB — 787 ms — h2https://telegram.org/file/464001560/2/n7EACfx4FPY.16465.png/7318c11715aa2ec45btelegram.org/file/464001560/2/n7EAC... https://telegram.org/file/464001560/2/n7EACfx4FPY.16465.png/7318c11715aa2ec45b — 200 — 16.3 KiB — 787 ms — h2https://telegram.org/js/main.js?47telegram.org/js/main.js?47 https://telegram.org/js/main.js?47 — 200 — 6.9 KiB — 787 ms — h2https://telegram.org/js/tgsticker.js?31telegram.org/js/tgsticker.js?31 https://telegram.org/js/tgsticker.js?31 — 200 — 6.9 KiB — 787 ms — h2https://telegram.org/file/464001132/3/-1qvqKPZsQQ.17975.png/7d57d7159cf4fbe9b2telegram.org/file/464001132/3/-1qvq... https://telegram.org/file/464001132/3/-1qvqKPZsQQ.17975.png/7d57d7159cf4fbe9b2 — 200 — 17.8 KiB — 788 ms — h2https://telegram.org/file/464001828/11e9a/1yY7a721t4o.30567.png/e113973dae2bee508btelegram.org/file/464001828/11e9a/1... https://telegram.org/file/464001828/11e9a/1yY7a721t4o.30567.png/e113973dae2bee508b — 200 — 29.7 KiB — 966 ms — h2https://telegram.org/file/464001880/3/xOpm7ohoHQ0.12690.png/feb1e161b1d3608613telegram.org/file/464001880/3/xOpm7... https://telegram.org/file/464001880/3/xOpm7ohoHQ0.12690.png/feb1e161b1d3608613 — 200 — 12.7 KiB — 966 ms — h2https://telegram.org/file/464001453/3/mNzXWC3RX0c.15740.png/9ce5fa5f3fb74460b4telegram.org/file/464001453/3/mNzXW... https://telegram.org/file/464001453/3/mNzXWC3RX0c.15740.png/9ce5fa5f3fb74460b4 — 200 — 15.6 KiB — 966 ms — h2https://telegram.org/file/464001402/5/eOMSj3GzJXo.13579.png/f3cec6c451d023c109telegram.org/file/464001402/5/eOMSj... https://telegram.org/file/464001402/5/eOMSj3GzJXo.13579.png/f3cec6c451d023c109 — 200 — 13.5 KiB — 967 ms — h2https://telegram.org/file/464001166/2/FzTl8_M5mQA.19325.png/b6c5dbc0e4f6553805telegram.org/file/464001166/2/FzTl8... https://telegram.org/file/464001166/2/FzTl8_M5mQA.19325.png/b6c5dbc0e4f6553805 — 200 — 19.1 KiB — 967 ms — h2data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0…www.w3.org/2000/svg' width='16' hei... data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0… — 200 — 0 B — 0 ms — datahttps://telegram.org/img/twitter.pngtelegram.org/img/twitter.png https://telegram.org/img/twitter.png — 200 — 1.4 KiB — 586 ms — h2https://telegram.org/img/SiteIconAndroid.svgtelegram.org/img/SiteIconAndroid.sv... https://telegram.org/img/SiteIconAndroid.svg — 200 — 1.2 KiB — 586 ms — h2https://telegram.org/img/SiteAndroid.jpg?2telegram.org/img/SiteAndroid.jpg?2 https://telegram.org/img/SiteAndroid.jpg?2 — 200 — 20.8 KiB — 588 ms — h2https://telegram.org/img/SiteIconApple.svgtelegram.org/img/SiteIconApple.svg https://telegram.org/img/SiteIconApple.svg — 200 — 647 B — 585 ms — h2https://telegram.org/img/SiteiOS.jpg?2telegram.org/img/SiteiOS.jpg?2 https://telegram.org/img/SiteiOS.jpg?2 — 200 — 30.8 KiB — 587 ms — h2https://telegram.org/img/SiteDesktop.jpg?2telegram.org/img/SiteDesktop.jpg?2 https://telegram.org/img/SiteDesktop.jpg?2 — 200 — 95.6 KiB — 756 ms — h2https://telegram.org/js/tgsticker-worker.js?14telegram.org/js/tgsticker-worker.js... https://telegram.org/js/tgsticker-worker.js?14 — 200 — 227 B — 829 ms — h2https://telegram.org/img/t_logo_sprite.svgtelegram.org/img/t_logo_sprite.svg https://telegram.org/img/t_logo_sprite.svg — 200 — 7.7 KiB — 359 ms — h2https://telegram.org/img/t_main_Android_demo.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo.mp4 — 206 — 245.4 KiB — 365 ms — h2https://telegram.org/img/t_main_iOS_demo.mp4telegram.org/img/t_main_iOS_demo.mp... https://telegram.org/img/t_main_iOS_demo.mp4 — 206 — 239.5 KiB — 371 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 30.8 KiB — 202 ms — h2https://telegram.org/img/favicon.icotelegram.org/img/favicon.ico https://telegram.org/img/favicon.ico — 200 — 15.0 KiB — 195 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 523 ms LCP 1.2 shttps://telegram.me// https://telegram.me/ — 302 — 278 B — 574 ms — h2https://telegram.org/telegram.org/ https://telegram.org/ — 200 — 6.2 KiB — 597 ms — h2https://telegram.org/css/bootstrap.min.css?3telegram.org/css/bootstrap.min.css?... https://telegram.org/css/bootstrap.min.css?3 — 200 — 10.1 KiB — 202 ms — h2https://telegram.org/css/telegram.css?249telegram.org/css/telegram.css?249 https://telegram.org/css/telegram.css?249 — 200 — 30.3 KiB — 393 ms — h2https://telegram.org/file/400780400931/3/L6HFfelQm5E.394826.jpg/c82f3df5fb2bdde5f3telegram.org/file/400780400931/3/L6... https://telegram.org/file/400780400931/3/L6HFfelQm5E.394826.jpg/c82f3df5fb2bdde5f3 — 200 — 369.9 KiB — 980 ms — h2https://telegram.org/file/400780400115/5/Cv5ZyIIoOC0.324347.jpg/9b317921d13d7c6ddatelegram.org/file/400780400115/5/Cv... https://telegram.org/file/400780400115/5/Cv5ZyIIoOC0.324347.jpg/9b317921d13d7c6dda — 200 — 300.6 KiB — 986 ms — h2https://telegram.org/file/464001897/3/f0Go0rLpEwk.11343.png/dd4eeb46cc5efc0688telegram.org/file/464001897/3/f0Go0... https://telegram.org/file/464001897/3/f0Go0rLpEwk.11343.png/dd4eeb46cc5efc0688 — 200 — 11.3 KiB — 787 ms — h2https://telegram.org/file/464001737/4/Fn57W9l3xI0.15286.png/d4b936ecc2c939f4fatelegram.org/file/464001737/4/Fn57W... https://telegram.org/file/464001737/4/Fn57W9l3xI0.15286.png/d4b936ecc2c939f4fa — 200 — 15.2 KiB — 787 ms — h2https://telegram.org/file/464001560/2/n7EACfx4FPY.16465.png/7318c11715aa2ec45btelegram.org/file/464001560/2/n7EAC... https://telegram.org/file/464001560/2/n7EACfx4FPY.16465.png/7318c11715aa2ec45b — 200 — 16.3 KiB — 787 ms — h2https://telegram.org/js/main.js?47telegram.org/js/main.js?47 https://telegram.org/js/main.js?47 — 200 — 6.9 KiB — 787 ms — h2https://telegram.org/js/tgsticker.js?31telegram.org/js/tgsticker.js?31 https://telegram.org/js/tgsticker.js?31 — 200 — 6.9 KiB — 787 ms — h2https://telegram.org/file/464001132/3/-1qvqKPZsQQ.17975.png/7d57d7159cf4fbe9b2telegram.org/file/464001132/3/-1qvq... https://telegram.org/file/464001132/3/-1qvqKPZsQQ.17975.png/7d57d7159cf4fbe9b2 — 200 — 17.8 KiB — 788 ms — h2https://telegram.org/file/464001828/11e9a/1yY7a721t4o.30567.png/e113973dae2bee508btelegram.org/file/464001828/11e9a/1... https://telegram.org/file/464001828/11e9a/1yY7a721t4o.30567.png/e113973dae2bee508b — 200 — 29.7 KiB — 966 ms — h2https://telegram.org/file/464001880/3/xOpm7ohoHQ0.12690.png/feb1e161b1d3608613telegram.org/file/464001880/3/xOpm7... https://telegram.org/file/464001880/3/xOpm7ohoHQ0.12690.png/feb1e161b1d3608613 — 200 — 12.7 KiB — 966 ms — h2https://telegram.org/file/464001453/3/mNzXWC3RX0c.15740.png/9ce5fa5f3fb74460b4telegram.org/file/464001453/3/mNzXW... https://telegram.org/file/464001453/3/mNzXWC3RX0c.15740.png/9ce5fa5f3fb74460b4 — 200 — 15.6 KiB — 966 ms — h2https://telegram.org/file/464001402/5/eOMSj3GzJXo.13579.png/f3cec6c451d023c109telegram.org/file/464001402/5/eOMSj... https://telegram.org/file/464001402/5/eOMSj3GzJXo.13579.png/f3cec6c451d023c109 — 200 — 13.5 KiB — 967 ms — h2https://telegram.org/file/464001166/2/FzTl8_M5mQA.19325.png/b6c5dbc0e4f6553805telegram.org/file/464001166/2/FzTl8... https://telegram.org/file/464001166/2/FzTl8_M5mQA.19325.png/b6c5dbc0e4f6553805 — 200 — 19.1 KiB — 967 ms — h2data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0…www.w3.org/2000/svg' width='16' hei... data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0… — 200 — 0 B — 0 ms — datahttps://telegram.org/img/twitter.pngtelegram.org/img/twitter.png https://telegram.org/img/twitter.png — 200 — 1.4 KiB — 586 ms — h2https://telegram.org/img/SiteIconAndroid.svgtelegram.org/img/SiteIconAndroid.sv... https://telegram.org/img/SiteIconAndroid.svg — 200 — 1.2 KiB — 586 ms — h2https://telegram.org/img/SiteAndroid.jpg?2telegram.org/img/SiteAndroid.jpg?2 https://telegram.org/img/SiteAndroid.jpg?2 — 200 — 20.8 KiB — 588 ms — h2https://telegram.org/img/SiteIconApple.svgtelegram.org/img/SiteIconApple.svg https://telegram.org/img/SiteIconApple.svg — 200 — 647 B — 585 ms — h2https://telegram.org/img/SiteiOS.jpg?2telegram.org/img/SiteiOS.jpg?2 https://telegram.org/img/SiteiOS.jpg?2 — 200 — 30.8 KiB — 587 ms — h2https://telegram.org/img/SiteDesktop.jpg?2telegram.org/img/SiteDesktop.jpg?2 https://telegram.org/img/SiteDesktop.jpg?2 — 200 — 95.6 KiB — 756 ms — h2https://telegram.org/js/tgsticker-worker.js?14telegram.org/js/tgsticker-worker.js... https://telegram.org/js/tgsticker-worker.js?14 — 200 — 227 B — 829 ms — h2https://telegram.org/img/t_logo_sprite.svgtelegram.org/img/t_logo_sprite.svg https://telegram.org/img/t_logo_sprite.svg — 200 — 7.7 KiB — 359 ms — h2https://telegram.org/img/t_main_Android_demo.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo.mp4 — 206 — 245.4 KiB — 365 ms — h2https://telegram.org/img/t_main_iOS_demo.mp4telegram.org/img/t_main_iOS_demo.mp... https://telegram.org/img/t_main_iOS_demo.mp4 — 206 — 239.5 KiB — 371 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 30.8 KiB — 202 ms — h2https://telegram.org/img/favicon.icotelegram.org/img/favicon.ico https://telegram.org/img/favicon.ico — 200 — 15.0 KiB — 195 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 151.6 KiB — 211 ms — h2https://telegram.org/js/pako-inflate.min.jstelegram.org/js/pako-inflate.min.js https://telegram.org/js/pako-inflate.min.js — 200 — 8.7 KiB — 211 ms — h2https://telegram.org/js/tgsticker-worker.js?14telegram.org/js/tgsticker-worker.js... https://telegram.org/js/tgsticker-worker.js?14 — 200 — 0 B — 82 ms — h2https://telegram.org/js/tgsticker-worker.js?14telegram.org/js/tgsticker-worker.js... https://telegram.org/js/tgsticker-worker.js?14 — 200 — 0 B — 57 ms — h2https://telegram.org/js/tgsticker-worker.js?14telegram.org/js/tgsticker-worker.js... https://telegram.org/js/tgsticker-worker.js?14 — 200 — 0 B — 79 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 0 B — 5 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 0 B — 9 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 0 B — 11 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 0 B — 10 ms — h2https://telegram.org/js/pako-inflate.min.jstelegram.org/js/pako-inflate.min.js https://telegram.org/js/pako-inflate.min.js — 200 — 0 B — 4 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 0 B — 26 ms — h2https://telegram.org/js/pako-inflate.min.jstelegram.org/js/pako-inflate.min.js https://telegram.org/js/pako-inflate.min.js — 200 — 0 B — 15 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 0 B — 24 ms — h2https://telegram.org/js/pako-inflate.min.jstelegram.org/js/pako-inflate.min.js https://telegram.org/js/pako-inflate.min.js — 200 — 0 B — 10 ms — h2https://telegram.org/file/464001484/1/bzi7gr7XRGU.10147/815df2ef527132dd23telegram.org/file/464001484/1/bzi7g... https://telegram.org/file/464001484/1/bzi7gr7XRGU.10147/815df2ef527132dd23 — 200 — 10.2 KiB — 205 ms — h2https://telegram.org/file/464001418/1/fabnJFzygPY.17422/bc9dec9fd8bd26e00etelegram.org/file/464001418/1/fabnJ... https://telegram.org/file/464001418/1/fabnJFzygPY.17422/bc9dec9fd8bd26e00e — 200 — 17.3 KiB — 205 ms — h2https://telegram.org/file/464001493/2/hV6uPcaHk_E.17388/dcccb066a7b4fe44eetelegram.org/file/464001493/2/hV6uP... https://telegram.org/file/464001493/2/hV6uPcaHk_E.17388/dcccb066a7b4fe44ee — 200 — 17.2 KiB — 205 ms — h2https://telegram.org/file/464001560/1/zLlKYgeDLoA.14496/62085b07461f2d87e4telegram.org/file/464001560/1/zLlKY... https://telegram.org/file/464001560/1/zLlKYgeDLoA.14496/62085b07461f2d87e4 — 200 — 14.4 KiB — 206 ms — h2https://telegram.org/file/464001812/2/kLAK2TPyvUU.12545/f68c1caf735a2ea3dbtelegram.org/file/464001812/2/kLAK2... https://telegram.org/file/464001812/2/kLAK2TPyvUU.12545/f68c1caf735a2ea3db — 200 — 12.5 KiB — 207 ms — h2https://telegram.org/file/464001828/11e99/2FUYW30UXAI.12708/7604effa1e02ddf7f9telegram.org/file/464001828/11e99/2... https://telegram.org/file/464001828/11e99/2FUYW30UXAI.12708/7604effa1e02ddf7f9 — 200 — 12.7 KiB — 208 ms — h2https://telegram.org/file/464001453/2/eW_MzRhUGoM.10926/fe1f3bc3dd08367c0atelegram.org/file/464001453/2/eW_Mz... https://telegram.org/file/464001453/2/eW_MzRhUGoM.10926/fe1f3bc3dd08367c0a — 200 — 10.9 KiB — 210 ms — h2https://telegram.org/file/464001880/2/VGTLBN3QuYM.10959/8940838e7dddc787d8telegram.org/file/464001880/2/VGTLB... https://telegram.org/file/464001880/2/VGTLBN3QuYM.10959/8940838e7dddc787d8 — 200 — 11.0 KiB — 211 ms — h2https://telegram.org/file/464001166/1/01aTJ2ISKeU.21801/24028c7b6d07639794telegram.org/file/464001166/1/01aTJ... https://telegram.org/file/464001166/1/01aTJ2ISKeU.21801/24028c7b6d07639794 — 200 — 21.3 KiB — 213 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 347ms · 13KB · $5/mo
telegram.org
Other
Optional
Execution 148ms
Transfer 6 KB
Monthly Cost $2/mo
Unattributable
Other
Optional
Execution 104ms
Transfer 0 KB
Monthly Cost $1/mo
telegram.org
Other
Optional
Execution 95ms
Transfer 7 KB
Monthly Cost $1/mo

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

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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