Resize an image to YouTube thumbnail size
Fit any photo to YouTube dimensions — 3840×2160, 1280×720 under 2 MB, or Shorts 9:16. Crop, blur-fit or add borders without uploading.
JPG, PNG or WebP — processed on your device
Exports at 3840×2160, 1280×720 (under 2 MB), or Shorts 9:16.
Need text and templates? Open the thumbnail studio
Nothing is uploaded
Your file is processed on your device and never sent to a server.
No waiting
There is no upload or queue, so results appear almost instantly.
Free and unlimited
No sign-up, no credits, no watermark on anything you download.
How to resize an image to youtube thumbnail size
- 1
Upload your image
Drop any JPG, PNG or WebP photo. It is processed locally on your device.
- 2
Choose fit and size
Pick 4K, mobile-safe 1280×720, or Shorts. Crop, blur-fit, or add a solid border.
- 3
Download for YouTube
Get the exact pixel dimensions and file size YouTube expects — no upload required.
Frequently asked questions
What is the YouTube thumbnail size in pixels?
YouTube recommends 3840×2160 for video thumbnails (16:9). The minimum width is 640 pixels. Our mobile-safe preset uses 1280×720 and keeps the file under 2 MB for phone uploads.
Why does YouTube say my thumbnail is too large?
Mobile uploads are limited to 2 MB. Choose the mobile-safe export preset and JPG format — the tool compresses until the file fits.
Will my image be cropped?
Only if you choose Fill & crop. Fit with blur or Fit with border keeps the entire image visible.
Is this the same as the thumbnail creator?
No. This tool resizes and optimizes quickly. The creator adds text, templates, and layout previews for full designs.
Common tasks
These open the same tool, already set up for a specific job.