What is Sqids?

Sqids (pronounced "squids") is an open-source library that lets you generate short unique identifiers from numbers. These IDs are URL-safe, can encode several numbers, and do not contain common profanity words. Read more .

This is what they look like:

https://example.com/Lqj8a0

Why use them?

The main use of Sqids is purely visual. If you'd like to use IDs instead of numbers in your webapp, Sqids could be a good choice:

Use Cases

  • Link shortening Safe to use in URLs
  • Event IDs Collision-free encoding/decoding
  • One-Time Passwords Short & profanity-free

Not Good For

  • Sensitive data This is not an encryption library
  • User IDs Can be decoded, revealing user count

Features

  • 🆔 Generate short IDs from non-negative numbers
  • ✅ Easy encoding & decoding
  • 🫣 Auto-generated IDs do not contain common profanity
  • 🎲 Support for custom IDs through shuffled alphabet
  • 😍 40 programming languages (22 using new design)
  • 📌 Every version produces the same IDs
  • 🍻 Small library with a permissive license

Get started

Are you an expert in any of these ?

Example / Playground

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Code libs — copyright Sqids maintainers (licensed under MIT)
Sqids logo is a part of Twemoji (licensed under CC-BY 4.0)
No squids here — just short quick IDs
2023 Sqids 🤘