Free tool
Social media image sizes, from the source
Only sizes read from the platform's own page, each with the date. Most size guides copy each other — which is how the whole internet still recommends a YouTube thumbnail size YouTube no longer does.
| Where | Pixels | Ratio | Max file | Read |
|---|---|---|---|---|
| YouTube video thumbnail | 3840 × 2160 | 16:9 | 2 MB on mobile upload | 2026-08-29 |
| YouTube channel banner | 2560 × 1440 | 16:9 | 6 MB | 2026-08-29 |
| YouTube profile picture | 800 × 800 | 1:1 | 15 MB | 2026-08-29 |
| Instagram feed post | 1080 × 1350 | 4:5 | 8 MB | 2026-08-29 |
| Instagram story & reel | 1080 × 1920 | 9:16 | 8 MB image · 100 MB story video · 300 MB reel | 2026-08-29 |
| X post image | 1920 × 1080 | 16:9 | — | 2026-08-29 |
| LinkedIn page cover image | 1128 × 376 | 3:1 | 3 MB | 2026-08-29 |
Crop to any of them
YouTube video thumbnail · 3840 × 2160
Not listed: X profile photo and header, Instagram profile picture, TikTok — their help pages refuse automated readers, and this page does not quote numbers it could not read.
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Tired of cropping per platform?
The composer fits the image for you
An image outside a platform's ratio is padded with a blurred copy of itself — no white bars, no export per platform. The sizes on this page are the ones it fits to.
Media fitted per platform
An image outside a platform's ratio is padded with a blurred copy of itself. Carousels where allowed, a PDF as a LinkedIn document.
Write once, tailor per platform
One caption; each platform gets its own card with its real limit, a title where one is needed, a first comment where the platform allows it.
Schedule, queue, or repeat
Pick a time, drop it in recurring slots, or recycle a post every few weeks. Best times to post come from your own history.
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