What is Sqids?

Sqids (pronounced "squids") is an open-source library that lets you generate YouTube-looking IDs from numbers. These IDs are short, can be generated from a custom alphabet and are guaranteed to be collision-free. 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 Fast collision-free ID generation
  • Quick lookups Decoding back into numbers

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
  • 🎲 Randomized IDs when encoding incremental numbers
  • 👩‍💻 40 programming languages (10 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

Sponsor

Popular

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 🤘