How to change your avatar on Chess.com
Click 'Settings' from the bottom-left menu on any Chess.com page, then select 'Profile' from the settings screen.
You’ll see your current avatar here. Click on it to upload a new image.
If you’d like to remove your current avatar without uploading a new one, click 'Remove' under your current one.
If you do not see the option to change your avatar, check out this article to learn why: Why can't I chat or post in forums or change my avatar?
What size should my avatar be?
Your avatar should be square and at least 175 x 175 pixels to ensure it appears correctly across the site.
You can use any common image file type, such as .jpeg, .png, .bmp, or even an animated .gif.
If you use an animated .gif, the animation will only display on your profile page and not in other areas of the site, such as forum posts or during games.