Data tools

    Validate and parse real-world identifiers.

    Phone number parser

    Parse and validate a phone number, and format it for international use.

    IBAN validator

    Validate an IBAN checksum and break out its country and account parts.

    Credit card validator

    Check a card number against the Luhn algorithm and detect the issuing scheme.

    Everything here runs on your machine

    These 3 data tools are plain client-side JavaScript served as static files. There is no backend to receive what you paste, no account to create and no usage limit. Open your browser's network panel while you work and you will see the page load, then nothing else.