Free Tool
Mastodon Photo Resizer
Resize images for Mastodon profiles and headers. Perfect for the Fediverse.
Upload an image
JPG, PNG, or WebP (Max 10MB)
Why use this tool?
Mastodon instances may vary, but standard dimensions apply across most servers. This tool ensures your images are perfectly sized to avoid automatic cropping or quality loss.
About Mastodon Image Sizes
Mastodon instances may vary, but standard dimensions apply across most servers.
How to Use This Tool
- Upload your image - Drag and drop or click to select
- Select the format - Choose from 2 presets (Profile, Cover, Post, etc.)
- Adjust the crop - Zoom, rotate, and position your image
- Download - Get your perfectly sized image instantly
Standard Mastodon Dimensions
Profile Picture
400 x 400 px
Avatar.
Header Image
1500 x 500 px
Profile banner.
Frequently Asked Questions
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