Deterministic pseudonymization across multiple related CSVs — the same passphrase maps the same value to the same fake everywhere, so joins between anonymized files still work.
Tip: use samples, upload, copy, download, and send-to actions inside the workspace where available.
Referential Anonymizer Converter is a free, browser-based tool that helps you convert between formats. Deterministic pseudonymization across multiple related CSVs — the same passphrase maps the same value to the same fake everywhere, so joins between anonymized files still work. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.
Start with the source file or pasted payload, then confirm delimiters, headers, and field handling before conversion.
Review the preview, copy or download the result, and keep everything local in your browser.
Re-running with the same key reproduces the exact same pseudonyms. Keep it secret — anyone with the key can regenerate the mapping.
No key set — output is still deterministic, but anyone running this tool with a blank key gets the same mapping. Add a passphrase for a private mapping.
