Resize Image for YouTube Thumbnail
without uploading it.
Get your thumbnail to YouTube's recommended 1280×720 size before uploading it to your video.
Drop an image, or click to browse
Drop your image — 1280×720 is pre-selected.
Click "Resize image".
Download and upload it as your thumbnail.
Why there's no upload step
YouTube recommends 1280×720 pixels for custom thumbnails (a 16:9 ratio), and images outside that ratio can get cropped unpredictably when YouTube generates its own preview sizes. Resizing to the exact recommended dimensions first — locally, in your browser — keeps you in control of the framing.
Is my image uploaded anywhere?+
No. Resizing happens entirely in your browser.
Will my image be stretched to fit 16:9?+
No — aspect ratio is preserved, so a non-16:9 image fits inside the 1280×720 box without distortion.
What file size does YouTube accept?+
YouTube caps thumbnail uploads at 2MB — pair this with Compress Image if your resized file is still too large.
What format is the output?+
JPG.