Passport Photo Maker
Crop an ID photo to any country size and lay out a print sheet.
Identicon Generator
Generate a unique geometric avatar from any string.
Identicon
Quick Tool Overview
The Identicon Generator turns any string into a symmetric geometric avatar, the way GitHub does. The pattern is derived deterministically from a hash, so the same input always gives the same image on any device — which makes it both a default avatar and a visual fingerprint the eye can compare faster than a hash.
- What it does
- Generates geometric avatars from a string
- You give it
- A username, email, ID or hash
- You get back
- A unique symmetric pattern image
- Best for
- Default avatars and visual fingerprints
About the Identicon Generator
An identicon turns a string into a small symmetric pattern. GitHub made them familiar as default avatars, but their real use is visual fingerprinting: two identicons that look different mean two different values, which the eye spots faster than reading a hash.
The generation is deterministic, so the same input always produces the same image on any device with nothing stored. The classic five-by-five mirrored grid is here alongside a few other styles, with adjustable grid size, palette and background. A batch mode takes a list of strings and returns a ZIP, which is how a set of demo users or a fingerprint sheet gets made.
Key features of the Identicon Generator
Deterministic
The same string always produces the same image, on every device, with nothing stored anywhere.
Symmetric by design
Mirroring is what makes the pattern read as a deliberate shape rather than as static, and keeps it memorable.
Several styles
The classic five-by-five grid plus other geometric arrangements, with adjustable grid size.
Batch from a list
A pasted list of strings becomes a ZIP, which is how a set of demo users or a fingerprint sheet gets made.
Custom palettes
The colour still comes from the hash, but from a palette you choose rather than a fixed one.
How to use the Identicon Generator
-
1
Type any string
A username, an email, an ID, a hash — anything.
-
2
Pick a style
The classic mirrored grid, or one of the other geometric styles.
-
3
Adjust the grid and colours
A five-by-five grid is the standard; more squares means more detail.
-
4
Download
One image, or a ZIP from a pasted list of strings.
Frequently asked questions
A default avatar that is unique per user without anyone uploading anything, and a visual fingerprint — spotting that two patterns differ is much faster than comparing two hashes by eye.
Yes. The pattern is derived deterministically from a hash of the string, so it is identical on every device and needs nothing stored.
Mirroring makes them read as a deliberate shape rather than as static, which is what makes them memorable and easy to tell apart at small sizes.
In principle, since a five-by-five grid has a finite number of patterns. In practice collisions are rare enough not to matter for avatars, though this is not a security mechanism.
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