YouTube Thumbnail Resizer
This YouTube thumbnail resizer crops a JPG, PNG or WebP image to a 16:9 frame and saves it at 1280×720 px. That meets YouTube’s rules: 16:9, at least 640 px wide, JPG or PNG. Drag the frame over the part you want to keep, then download a PNG or JPG.
Sign up free to load an image and preview the crop. Downloads need a one-time $4.99 payment for lifetime access or an active Kreatli plan.
Crop, position, and download your thumbnail
Drag and drop your image here
or click to browse
Resize image
Drag the frame to move it; drag corners to resize (always 16:9). Download is always 1280×720 px.
Tip: keep text and faces a little in from the edges. YouTube shows the video length in the bottom-right corner of the thumbnail.
Export
YouTube’s thumbnail rules
These are the limits YouTube publishes for custom thumbnails. A 1280×720 export from this tool meets all of them. It is below YouTube’s 4K recommendation but twice the minimum width.
| Aspect ratio | 16:9 for videos (9:16 for Shorts) |
|---|---|
| Recommended resolution | 3840×2160 px for videos (2160×3840 px for Shorts) |
| Minimum size | 640 px wide for videos (640 px tall for Shorts) |
| File formats | Image formats such as JPG or PNG |
| File size, YouTube Studio on a computer | Up to 50 MB |
| File size, YouTube mobile app | Up to 2 MB for video thumbnails |
| Who can add one | Verified accounts |
Source: YouTube Help, Add video thumbnails, checked November 2, 2026. Every YouTube image size, from profile pictures to end screens, is on our YouTube sizes page.
How the resizer crops your image
The tool crops. It never stretches the image and never adds bars. When you load a file, it places the largest 16:9 frame that fits, centered. Drag the frame to move it, or drag a corner to make it smaller. It stays 16:9. Whatever is inside the frame is scaled to exactly 1280×720.
| Your image | Starting frame | What happens |
|---|---|---|
| 3840×2160 (4K frame grab) | The whole image, already 16:9 | Scaled down to 1280×720. Nothing is cut. |
| 4000×3000 (camera photo, 4:3) | 4000×2250, centered | 375 px trimmed from the top and from the bottom, then scaled down. |
| 1080×1080 (square) | 1080×608, centered | Top and bottom trimmed, then enlarged about 1.2 times. Check that text stays sharp. |
| 1080×1920 (phone, vertical) | 1080×608, centered | Most of the height is cut. Drag the frame onto the face or subject first. |
- Inputs: JPG, PNG or WebP, up to 40 MB and 10,000 px on each side. Phone photos keep the way they were turned when taken.
- PNG or JPG: PNG keeps every pixel and is larger. JPG is saved at 95% quality and is smaller, which helps with the 2 MB limit in the mobile app.
- Transparency: clear areas in a PNG are filled with white.
- Privacy: cropping and export run in your browser. The image is not uploaded to Kreatli.
Check these before you upload
- Read it small. Thumbnails often show at a fraction of their size in search and on phones. Zoom your export out until it is about as wide as your thumb. If you can’t read the words, use fewer and larger ones.
- Keep the bottom-right corner clear. YouTube shows the video length there, so a face or a word in that corner gets covered.
- Check the file size for where you upload. Up to 50 MB in YouTube Studio on a computer, 2 MB in the mobile app.
- Make sure your account is verified. YouTube only lets verified accounts add custom thumbnails.
- Follow the Community Guidelines. YouTube can reject a thumbnail that breaks them and give your channel a strike.
- Shorts need their own image. This tool makes 16:9 only. A Short takes a 9:16 thumbnail, added in YouTube Studio on a computer. Check vertical framing with the YouTube Shorts safe zone checker.
Get the thumbnail approved before it goes live
If a client or a channel owner has to sign off, send them the options instead of a chat full of screenshots. In Kreatli, guests open a review link and comment after typing their name, with no account. They can draw on the image to show what to move. Upload each round as a new version of the same file, compare two versions side by side, and set a status such as “Approved” when it is final. Try it on one file with the free image reviewer, or see how the creative approval workflow works for a whole team. Plans and the 7-day trial are on the pricing page.
Other YouTube and video tools
Channel art at 2560×1440, frame grabs for thumbnails, Shorts safe zones and video resizing.
YouTube Banner Resizer
Resize your YouTube channel art to the perfect dimensions. Preview safe areas for mobile, desktop, tablet, and TV devices.
Video Frame Extractor
Extract still frames from a video and download them as PNG/JPG. Processing runs locally in your browser for fast exports. Sign in to use the tool; start a trial or choose a plan if your subscription isn’t active.
YouTube Shorts Safe Zone Checker
Test your YouTube Shorts video layout before publishing. Preview where channel name, subscribe button, like button, comments, and video controls appear.
Resize Video
Change a video’s aspect ratio to 9:16, 1:1 or 16:9 with presets for Reels, TikTok and YouTube. Crops and scales in your browser. Sign in to use the tool; start a trial or choose a plan if your subscription isn’t active.
Questions about resizing thumbnails
Collect thumbnail feedback in one place
Share a review link, get comments and drawn notes on the image, and mark the final version approved.