YouTube Thumbnail Maker — 3840x2160
Private by design — local browser processing
Drop images here
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Supports: JPG, PNG, WebP
YouTube Image Sizes in 2026
Eye-catching thumbnails can double your click-through rate. Use the right dimensions:
- Thumbnail: 3840x2160px (16:9) — the most important image for your video
- Channel Banner: 2560x1440px — keep important content in the center safe area
- Channel Icon: 800x800px — displayed as a circle across YouTube
Frequently Asked Questions
What size should a YouTube thumbnail be?
YouTube currently recommends 3840x2160px (16:9), with a minimum width of 640px. The upload limit is 2MB on mobile and 50MB on desktop.
What about the channel banner?
The channel banner is 2560x1440px, but the safe area (visible on all devices) is the center 1546x423px. Keep text and logos in the center.
Can I create thumbnails from any image?
Yes! Upload any image and Vizua will scale and center-crop it to 3840x2160. The cover-fill approach ensures no black bars.