The avatars are automatically resized to 48x48. For pixel art avatars you may wish to use a 48x48 source image, otherwise the resize should be fine. The Steemit image rehoster is constantly displaying resized images in the form of preview thumbnails on most posts.
The original, default avatar shown below is 128x128 pixels with a transparent background. If you use it as a template and stay within the circle there is no circular cropping, just scaling. I used a square 128x128 canvas with a picture with a transparant background that fit in the circle.
The avatars are automatically resized to 48x48. For pixel art avatars you may wish to use a 48x48 source image, otherwise the resize should be fine. The Steemit image rehoster is constantly displaying resized images in the form of preview thumbnails on most posts.
The original, default avatar shown below is 128x128 pixels with a transparent background. If you use it as a template and stay within the circle there is no circular cropping, just scaling. I used a square 128x128 canvas with a picture with a transparant background that fit in the circle.