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.
This is what they look like:
Dart Implementation
Sqids Dart allows you to easily use Sqids in your Dart and Flutter projects.
Quick encode & decode example:
final sqids = Sqids()
const id = sqids.encode([1, 2, 3]) // "86Rf07"
const numbers = sqids.decode(id) // [1, 2, 3]
Custom Length
If IDs are too short, you can pad them to a certain length:
final sqids = Sqids({ minLength: 10, })
const id = sqids.encode([1, 2, 3]) // "86Rf07xd4z"
const numbers = sqids.decode(id) // [1, 2, 3]
Custom Alphabet
Create unique IDs by shuffling the alphabet:
final sqids = Sqids({ alphabet: 'k3G7QAe51FCsPW92uEOyq4Bg6Sp8YzVTmnU0liwDdHXLajZrfxNhobJIRcMvKt', })
const id = sqids.encode([1, 2, 3]) // "XRKUdQ"
const numbers = sqids.decode(id) // [1, 2, 3]
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.
- Link Shortening: Generate short, unique IDs for URLs.
- Obfuscating IDs: Hide incremental database IDs from users.
- Event IDs: Create friendly IDs for event tickets or reservations.
For full documentation, visit github.com/sqids/sqids-dart.