Free tool
YouTube image resizer
Resize an image to the right YouTube size and save it as JPEG or PNG. Everything happens in your browser: the image never leaves your device.
Preview
Choose an image to see it here.
YouTube character limit
A YouTube video description can have up to 5,000 characters. The video title is separate and can have up to 100 characters.
How this counter counts
YouTube counts UTF-8 bytes, so accented letters count as 2 and many other scripts and emoji as 3 or 4.
YouTube image sizes
| Image | Size | Notes |
|---|---|---|
| Video thumbnail | 16:9, recommended 3840×2160 | At least 640 wide. JPG or PNG. Up to 2 MB when uploaded on mobile, 50 MB on a computer. |
| Shorts thumbnail | 9:16, recommended 2160×3840 | At least 640 tall. |
| Channel banner | 2560×1440 recommended | At least 2048×1152 at 16:9. Keep text and logos inside the 1235×338 safe area at the minimum size. Up to 6 MB. |
| Profile picture | Shown at 98×98 | JPG, GIF, BMP or PNG, without animation. Up to 15 MB. |
Sources, checked November 2026: YouTube Help: thumbnails, YouTube Help: banner and profile picture
Also for YouTube: the free YouTube character counter.
Schedule YouTube posts
PostDelegate publishes to YouTube today. Plan posts on one calendar and schedule them with the YouTube scheduler, or have your assistant draft them: Claude · ChatGPT · Claude Code · Codex · Cursor · Gemini CLI. Start your 7-day free trial, no card needed.
Questions
Is my image uploaded anywhere?
Where do these YouTube sizes come from?
What is the difference between cover and contain?
More free image resizers
Instagram · LinkedIn · X · Bluesky · Pinterest · Mastodon · Twitch · Dribbble
Or check every network at once with the image resizer, and see all free tools.
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