Resize an image to 1280x720 for a YouTube thumbnail
A blurry or wrong-shaped thumbnail kills click-through before anyone watches a second. YouTube wants thumbnails at a clean 16:9, and 1280x720 is the size it asks for. The tool below is already set to it.
Drop images here or click to upload
PNG, JPG, WebP, GIF, AVIF, HEIC — up to 50MB each
- Files never leave your device
- Runs in your browser
- Free, no signup
Why 1280x720 is the YouTube thumbnail standard
1280x720 is a 16:9 aspect ratio and the resolution YouTube recommends for custom thumbnails. It is the minimum width YouTube accepts, so it is the smallest size that still looks crisp on the platform.
Matching 16:9 means your thumbnail sits flush in the player and in search rows with no letterboxing. The resize tool is pre-set to 1280 by 720.
Design for the tiny preview
Most viewers see a thumbnail at a fraction of full size on a phone. Big faces, few words, and high contrast survive the shrink, while fine detail and small text vanish.
Check your design at about 210 pixels wide, near the size it shows in a mobile feed. If you cannot read the text there, simplify it before you export.
Stay under the upload limit
YouTube caps thumbnail files at 2 MB. A detailed 1280x720 image can creep toward that, so if you are close, hit a KB limit to bring it down without changing the dimensions.
Resizing runs locally in your browser, so unreleased thumbnails are not uploaded anywhere until you choose to publish the video.