Identicon Generator

Where to use identicons

• Default avatars — show something distinct for users who haven't uploaded a picture (GitHub does exactly this)
• API clients / bots — give each automation a visual identity even when there's no real person behind it
• Hash visualisation — quickly spot if two long strings are the same (e.g. SSH key fingerprints)

How it works

The input is hashed with SHA-256. The first three bytes pick a hue (or are overridden by a fixed palette). The remaining bytes are read as a bitstream into a 5×3 grid which is then mirrored horizontally — that's why identicons look symmetrical.

Privacy

Your input never leaves the browser. Hashing and drawing both run locally.