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https://telegram.me

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
3
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
76
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
60
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.

1.83 s

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

5.81 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.

3.64 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.

5.81 s

Page Load Progression

699 ms
1.4 s
2.1 s
2.8 s
3.5 s
4.2 s
4.9 s
5.6 s
Checks
17
8 PASS 4 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
52 resources · 1.8 MB · 0 KB savings available
FIX
52 resources · 1.8 MB · 0 KB savings available
Warning::
Page weight 827 KB over 1MB target
Got: 1.8 MB Expected: ≤ 1 MB
Warning::
51 third-party resources (100% of weight)
Info::
3 resources over 200KB
52 resources · 1.8 MiB · 51 third-party 826.6 KiB over 1MB target
Image 51% · 948.9 KiB
Media 28% · 522.5 KiB
Other 8% · 151.6 KiB
Document 7% · 133.6 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, 52 requests
REVIEW
1.8 MB transferred, 52 requests
Info::
Page weighs 3.9 MB (1.8 MB transferred)
Info::
52 HTTP requests
Info::
Estimated 0.38 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
52 requests
0.38 g CO2 per page load
Images 934.0 KiB 50%
Other 522.5 KiB 28%
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 6.0 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit
C
Image Optimization
Action
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
Warning::
https://telegram.org/file/400780400115/5/Cv5ZyIIoO... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://telegram.org/file/400780400931/3/L6HFfelQm... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
17 images 934 KB
0 oversized -0 KB
16 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
JS Execution Cost
Action
1624ms total JS execution
REVIEW
1624ms total JS execution
Warning::
https://telegram.org/js/tgsticker.js?31: 607ms CPU time
Warning::
https://telegram.org/: 589ms CPU time
Warning::
Unattributable: 429ms CPU time
Warning::
Third-party scripts: 1624ms (100% of total)

Main Thread Breakdown

Other 45% Script Evaluation 33% Style & Layout 12% Rendering 7%
ScriptTotalScriptingParse/CompileParty
https://telegram.org/js/tgsticker.js?31607ms510ms3ms3rd
https://telegram.org/589ms11ms1ms3rd
Unattributable429ms12ms0ms3rd
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+
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
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
52 requests over 3101ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 1.8 s LCP 5.8 shttps://telegram.me// https://telegram.me/ — 302 — 279 B — 585 ms — h2https://telegram.org/telegram.org/ https://telegram.org/ — 200 — 6.0 KiB — 580 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 — 192 ms — h2https://telegram.org/css/telegram.css?249telegram.org/css/telegram.css?249 https://telegram.org/css/telegram.css?249 — 200 — 30.3 KiB — 378 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 — 954 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 — 1.1 s — 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 — 768 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 — 768 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 — 768 ms — h2https://telegram.org/js/main.js?47telegram.org/js/main.js?47 https://telegram.org/js/main.js?47 — 200 — 6.9 KiB — 764 ms — h2https://telegram.org/js/tgsticker.js?31telegram.org/js/tgsticker.js?31 https://telegram.org/js/tgsticker.js?31 — 200 — 6.9 KiB — 767 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 — 767 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 — 768 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 — 937 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 — 938 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 — 938 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 — 938 ms — h2https://telegram.org/img/t_main_Android_demo_2x.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo_2x.mp4 — 206 — 207 B — 944 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/SiteIconAndroid.svgtelegram.org/img/SiteIconAndroid.sv... https://telegram.org/img/SiteIconAndroid.svg — 200 — 1.2 KiB — 753 ms — h2https://telegram.org/img/SiteAndroid_2x.jpg?2telegram.org/img/SiteAndroid_2x.jpg... https://telegram.org/img/SiteAndroid_2x.jpg?2 — 200 — 58.8 KiB — 754 ms — h2https://telegram.org/img/SiteTDesktop_2x.jpg?1telegram.org/img/SiteTDesktop_2x.jp... https://telegram.org/img/SiteTDesktop_2x.jpg?1 — 200 — 43.1 KiB — 750 ms — h2https://telegram.org/img/tl_arrow_2x.pngtelegram.org/img/tl_arrow_2x.png https://telegram.org/img/tl_arrow_2x.png — 200 — 1.3 KiB — 750 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 — 802 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 — 368 ms — h2https://telegram.org/img/t_main_Android_demo_2x.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo_2x.mp4 — 206 — 9.5 KiB — 194 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 30.8 KiB — 194 ms — h2https://telegram.org/img/t_main_Android_demo_2x.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo_2x.mp4 — 206 — 512.8 KiB — 214 ms — h2https://telegram.org/img/favicon.icotelegram.org/img/favicon.ico https://telegram.org/img/favicon.ico — 200 — 15.0 KiB — 204 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 151.6 KiB — 205 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 1.8 s LCP 5.8 shttps://telegram.me// https://telegram.me/ — 302 — 279 B — 585 ms — h2https://telegram.org/telegram.org/ https://telegram.org/ — 200 — 6.0 KiB — 580 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 — 192 ms — h2https://telegram.org/css/telegram.css?249telegram.org/css/telegram.css?249 https://telegram.org/css/telegram.css?249 — 200 — 30.3 KiB — 378 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 — 954 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 — 1.1 s — 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 — 768 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 — 768 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 — 768 ms — h2https://telegram.org/js/main.js?47telegram.org/js/main.js?47 https://telegram.org/js/main.js?47 — 200 — 6.9 KiB — 764 ms — h2https://telegram.org/js/tgsticker.js?31telegram.org/js/tgsticker.js?31 https://telegram.org/js/tgsticker.js?31 — 200 — 6.9 KiB — 767 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 — 767 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 — 768 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 — 937 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 — 938 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 — 938 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 — 938 ms — h2https://telegram.org/img/t_main_Android_demo_2x.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo_2x.mp4 — 206 — 207 B — 944 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/SiteIconAndroid.svgtelegram.org/img/SiteIconAndroid.sv... https://telegram.org/img/SiteIconAndroid.svg — 200 — 1.2 KiB — 753 ms — h2https://telegram.org/img/SiteAndroid_2x.jpg?2telegram.org/img/SiteAndroid_2x.jpg... https://telegram.org/img/SiteAndroid_2x.jpg?2 — 200 — 58.8 KiB — 754 ms — h2https://telegram.org/img/SiteTDesktop_2x.jpg?1telegram.org/img/SiteTDesktop_2x.jp... https://telegram.org/img/SiteTDesktop_2x.jpg?1 — 200 — 43.1 KiB — 750 ms — h2https://telegram.org/img/tl_arrow_2x.pngtelegram.org/img/tl_arrow_2x.png https://telegram.org/img/tl_arrow_2x.png — 200 — 1.3 KiB — 750 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 — 802 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 — 368 ms — h2https://telegram.org/img/t_main_Android_demo_2x.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo_2x.mp4 — 206 — 9.5 KiB — 194 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 30.8 KiB — 194 ms — h2https://telegram.org/img/t_main_Android_demo_2x.mp4telegram.org/img/t_main_Android_dem... https://telegram.org/img/t_main_Android_demo_2x.mp4 — 206 — 512.8 KiB — 214 ms — h2https://telegram.org/img/favicon.icotelegram.org/img/favicon.ico https://telegram.org/img/favicon.ico — 200 — 15.0 KiB — 204 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 151.6 KiB — 205 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 — 204 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 — 75 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 — 67 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 — 75 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 0 B — 6 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 0 B — 7 ms — h2https://telegram.org/js/rlottie-wasm.jstelegram.org/js/rlottie-wasm.js https://telegram.org/js/rlottie-wasm.js — 200 — 0 B — 7 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 0 B — 23 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 0 B — 27 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 — 6 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 — 16 ms — h2https://telegram.org/js/rlottie-wasm.wasmtelegram.org/js/rlottie-wasm.wasm https://telegram.org/js/rlottie-wasm.wasm — 200 — 0 B — 16 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 — 11 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 — 194 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 — 194 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 — 197 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 — 200 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 — 203 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/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/464001418/1/fabnJFzygPY.17422/bc9dec9fd8bd26e00etelegram.org/file/464001418/1/fabnJ... https://telegram.org/file/464001418/1/fabnJFzygPY.17422/bc9dec9fd8bd26e00e — 200 — 17.3 KiB — 208 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 — 210 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 1624ms · 13KB · $22/mo
telegram.org
Other
Costly
Execution 607ms
Transfer 7 KB
Monthly Cost $8/mo
telegram.org
Other
Costly
Execution 589ms
Transfer 6 KB
Monthly Cost $8/mo
Unattributable
Other
Costly
Execution 429ms
Transfer 0 KB
Monthly Cost $6/mo

These scripts may cost more than they're worth

  • telegram.org adds 607ms and costs ~$8/month
  • telegram.org adds 589ms and costs ~$8/month
  • Unattributable adds 429ms and costs ~$6/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

telegram.org takes 607ms 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

telegram.org takes 589ms 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 429ms 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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