Best Avatar Generator turns one photo into a custom avatar. Pick a style (Grok-style portrait, cartoon, pixel art, seasonal Halloween), upload one selfie and get up to 4 previews, then keep your favourite in HD with a transparent background. There is also a free in-browser avatar builder that needs no photo and no sign-up, with free PNG downloads. Credit packs start at $1.99, one-time, no subscription. Photos stay private.