RoboHash

Overview

RoboHash generates unique robot/monster/head avatars from any text — deterministic, keyless, and free. A classic placeholder-avatar service (the “robots” are generated from your seed’s hash).

Quick Start

A robot avatar (verified live):

curl "https://robohash.org/example.png"

Any text works as a seed:

curl "https://robohash.org/user-123.png"

Different sets:

curl "https://robohash.org/user-123.png?set=set1"   # robots
curl "https://robohash.org/user-123.png?set=set2"   # monsters
curl "https://robohash.org/user-123.png?set=set3"   # robot heads
curl "https://robohash.org/user-123.png?set=set4"   # cats

Custom background size:

curl "https://robohash.org/user-123.png?size=200x200&bgset=bg2"

Authentication

None — keyless.

Rate Limits & Notes

• Free; deterministic (same seed → same image) — perfect for user avatars.
• Sets: set1 robots, set2 monsters, set3 heads, set4 cats; bgset picks background styles.
• Output formats: PNG (default), JPG, GIF via extension (example.jpg).
• Hotlink-friendly — designed for <img> tags.

FAQ

Is RoboHash free? Yes — free and keyless.

Can I control the style? Yes — ?set=set1..set4 and ?bgset=bg1..bg2.

Is it deterministic? Yes — the same seed always produces the same avatar.