Resize for Mastodon Profile Photo

Auto-set to 400×400 pixels. Fediverse profile picture at recommended size.

Drop your image here 🍡

PNG, JPG, WebP, BMP — any size, mochi handles it all

Resized Image
Result
Dimensions
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File Size
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Image too small? Sharpen first

If your image is smaller than the target size, use Sharpen for better clarity, then resize.

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Continue your workflow

Crop Profile Picture →Compress Image for Web →Crop Image to Square →
Type Dimensions Ratio
PlatformMastodon
Image TypeProfile Photo
Dimensions400×400 px
Aspect Ratio1:1

Frequently Asked Questions

What size is a mastodon profile photo?
Mastodon recommends 400×400 pixels for this image type. Uploading at this exact size ensures the best display quality without platform-side compression.
What format works best for Mastodon?
JPEG works best for photos on Mastodon. PNG is ideal for logos and graphics with transparency. Keep file size reasonable for fast loading.
Can I use this for multiple platforms?
This tool is optimized for Mastodon's specific dimensions (400×400). Other platforms may require different sizes. Check our other platform-specific resize tools.