hashids
An Elixir library for obfuscating numerical IDs into short, unique, reversible strings.
What is hashids?
Hashids is an Elixir library that obfuscates numerical identifiers by encoding them into short, unique, reversible strings. It solves the problem of exposing sequential database IDs in user-facing contexts like URLs or APIs, providing a simple way to create non-sequential, customizable identifiers. The library is a direct port of the popular Hashids JavaScript implementation, adapted for Elixir's functional programming environment.
Elixir developers building web applications, APIs, or services where hiding sequential database IDs improves user experience or perceived security.
Developers choose Hashids for its simplicity, reversibility, and customization options—offering a lightweight alternative to cryptographic hashing when security isn't the primary concern, with easy integration into Elixir projects.
Overview
Stringify your ids
Use Cases
Best For
- Obfuscating database IDs in URLs for Elixir web applications
- Creating short, unique tokens for API responses without exposing sequential IDs
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