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Generadores

Generador de ULID y NanoID

Sortable ULIDs and tiny NanoIDs — generated client-side.

Runs in your browser

Sortable, timestamp-prefixed identifiers.

GenerateULIDs

    ULIDs sort lexicographically by creation time — handy for time-ordered keys.

    Nota del editor

    Understanding · UUIDs, but for the database we actually use.

    Este capítulo en profundidad está disponible solo en inglés por el momento. La herramienta de conversión de arriba funciona en tu idioma; el artículo explicativo extenso aún no se ha traducido.

    Preguntas frecuentes

    Quick answers.

    ›What is the difference between ULID and NanoID?

    ULIDs include a timestamp for chronological sorting, whereas NanoIDs are purely random. ULID has a fixed format, while NanoID allows for custom lengths and character sets.

    ›Are these identifiers safe to use for database keys?

    Yes. ULIDs are particularly useful as primary keys because their chronological ordering helps maintain database index performance. NanoIDs are safe for public URLs where brevity is preferred.

    ›Is any data sent to your servers?

    No. Generation occurs entirely within your browser using the `crypto.getRandomValues` API. No identifier generated here is ever transmitted or logged.

    ›Can I customise the NanoID output?

    Yes. You can adjust the length and the alphabet to remove ambiguous characters like `1`, `l`, `0`, or `O` depending on your requirements.

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