A Go library that generates concise, unambiguous, URL-safe UUIDs. Based on and compatible with the Python library shortuuid.

Often, one needs to use non-sequential IDs in places where users will see them, but the IDs must be as concise and easy to use as possible. shortuuid solves this problem by generating UUIDs using satori/go.uuid and then translating them to base57 using lowercase and uppercase letters and digits, and removing similar-looking characters such as l, 1, I, O and 0.

package main

import (
    "fmt"

    "github.com/renstrom/shortuuid"
)

func main() {
    id := shortuuid.UUID()  // "ajLWxEodc6CmQLHADuKVwD"

    u := shortuuid.New()
    // Note that this will create a new UUID each time its .String() method
    // is invoked.
    fmt.Printf("%s", u)  // Cekw67uyMpBGZLRP2HFVbe
    fmt.Printf("%s", u)  // 4pUYNRFHTG3YVgThPZvCgC
}

To use UUID v5 (instead of the default v4), pass a namespace (DNS or URL) to the .UUID(name string) call:

shortuuid.New().UUID("http://example.com")

MIT