When a project has anonymous users, you still want a way to distinguish them in the UI. For this, I use services that generate avatars.
I’ve collected the ones I personally like — they look clean and stylish. If I don’t know the user’s gender, I use animals or abstract shapes.
Anonymous Animals API
Those same animals from Google Docs — perfect for anonymous users without gender association. Go to repository →

Boring Avatars
Minimalistic abstract avatars generated from a string — clean and simple. Go to website →

Multiavatar
Bright, cartoon-style characters with 12 billion unique combinations. Go to website →

Avatar Placeholder
A simple placeholder with initials or a random color. Go to website →

DiceBear
A library with many styles (pixels, bots, avatars) and flexible configuration via URL. Go to library →

