Generate Nano IDs online — compact, URL-safe, secure random identifiers, in your browser.
Generate Nano IDs: short, URL-safe unique identifiers with a customisable length. Smaller than a UUID but with comparable collision resistance, they are popular for public-facing IDs and short links.
The default 21 characters gives collision odds similar to a UUID. Shorter IDs are fine for low-volume use; longer for high volume.
Yes — A–Z, a–z, 0–9, plus _ and -, so IDs drop straight into URLs and filenames.