publicid

URL-safe, non-sequential public IDs from a fixed lowercase nanoid alphabet.

go get github.com/ubgo/publicid

Language: Go
Go version: 1.24
Core deps: 1 direct
Latest tag: v0.1.0
License: Apache-2.0
Go modules: 1

Code from the README

package main

import (
    "fmt"

    "github.com/ubgo/publicid"
)

func main() {
    id, err := publicid.New()
    if err != nil { panic(err) }
    fmt.Println(id) // e.g. "k7n3p9q2x8m4r6t1v5y0w8z3"
}

if err := publicid.Validate("user_id", input); err != nil {
    return err
}
// or with custom length:
if err := publicid.ValidateN("short_code", code, 7); err != nil { ... }

From the publicid README.