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:


Quick encode & decode example:

s, _ := sqids.New()
id, _ := s.Encode([]uint64{1, 2, 3}) // "86Rf07"
numbers := s.Decode(id) // [1, 2, 3]

If IDs are too short, you can pad them to a certain length:

s, _ := sqids.New(sqids.Options{
  MinLength: 10,
id, _ := s.Encode([]uint64{1, 2, 3}) // "86Rf07xd4z"
numbers := s.Decode(id) // [1, 2, 3]

Create unique IDs by shuffling the alphabet:

s, _ := sqids.New(sqids.Options{
  Alphabet: "k3G7QAe51FCsPW92uEOyq4Bg6Sp8YzVTmnU0liwDdHXLajZrfxNhobJIRcMvKt",
id, _ := s.Encode([]uint64{1, 2, 3}) // "XRKUdQ"
numbers := s.Decode(id) // [1, 2, 3]

Full documentation is at https://github.com/sqids/sqids-go

If you're looking for the original Hashids Go, you can find it here: https://github.com/speps/go-hashids

Use Cases

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

Good For

  • Encoding primary keys If you're using a relational database
  • Saving database lookups By encoding multiple objects
  • Temporary login tokens Profanity-free and URL-safe

Not Good For

  • Sensitive data This is not an encryption library
  • User IDs Can reveal user count if anyone finds out the encoding alphabet


  • ๐Ÿ†” Generate short IDs from non-negative numbers
  • โœ… Easy encoding & decoding
  • ๐Ÿซฃ Auto-generated IDs do not contain common profanity
  • ๐ŸŽฒ Support for custom IDs through shuffled alphabet
  • ๐Ÿฅณ 45 integrations (78% using new design)
  • ๐Ÿ“Œ Every version produces the same IDs
  • ๐Ÿป Small library with a permissive license

Example / Playground