YouTube thumbnail resizer
Get every YouTube image size right the first time, without design software.
Table of contents
YouTube thumbnail resizer
Drop an thumbnail and get it resized and cropped to every YouTube size. Nothing is uploaded; the file stays in your browser.
How to resize an thumbnail for YouTube
- Drop your file
Or type the width and height to check a size without a file. - Pick the placement
Choose video thumbnail. - Adjust the crop
Drag the frame so the subject stays in view; the cut is drawn on your own file. - Download
Export at the exact pixel size and upload it to YouTube.
YouTube image sizes in 2026
Thumbnails: JPG, PNG or GIF, up to 2 MB, 16:9, at least 640 px wide. Channel banners: 2560 x 1440 recommended, nothing under 2048 x 1152, 6 MB or less; only the center strip (about 1546 x 423 on a 2560 x 1440 file) is safe on every device.
| Use | Size (px) | Ratio |
|---|---|---|
| Video thumbnail | 1280 x 720 | 16:9 |
A worked example
Take a typical iPhone photo, 4032 x 3024 (4:3):
- Video thumbnail (1280 x 720): the full width is kept, the height is cut to 2268 px, so about 25% of the height is lost before scaling to 1280 x 720.
The resizer draws that cut on your own file before you export, so you can drag the frame to keep the subject in view.
What the tool is doing
It reads the pixel size of your file in the browser, draws it on a canvas, crops it to the shape you pick and re-encodes it at the exact export size. There is no upload request, and metadata such as EXIF location is not carried over.
Thumbnails are judged small
On the mobile home feed and in the suggested sidebar a thumbnail shows at a fraction of its 1280 x 720 export size, next to a title cut to about 40 to 60 characters. Large text, one clear subject and strong contrast read at that size; fine detail does not.
Keep exploring
- YouTube Image Resizer
- YouTube Banner Maker
- YouTube Banner Size Checker
- YouTube Thumbnail Previewer
- All free YouTube tools
- YouTube growth
The file is the right size. Now get it seen.
A clean image earns the first look. Real likes, comments and subscribers decide how many people see it next.
Frequently asked questions
What size should a YouTube thumbnail be?
1280 x 720 (16:9), JPG, PNG or GIF, up to 2 MB, at least 640 px wide.
Will my thumbnail be cropped?
Not if it is 16:9. The resizer crops other shapes to 16:9 and shows the cut first.
Is my image uploaded anywhere?
No. It is resized in your browser.
What does a well-made image give?
It grows the account, but you need the right tool.
What is the YouTube banner safe area?
About 1546 x 423 in the center of a 2560 x 1440 banner.
What size is a YouTube thumbnail?
1280 x 720 (16:9), JPG, PNG or GIF, up to 2 MB.
How long can a YouTube channel description be?
1,000 characters.