PII Anonymizer & Masking

Securely mask sensitive information like Emails, Phone Numbers, and Credit Cards from your JSON data.

input.json
anonymized.json

About the PII Anonymizer

Mask personal data in JSON before you share it in a bug report, a demo or a support ticket. Everything runs in your browser.

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How to use it
  1. Paste your JSON into input.json.
  2. Choose what to mask: emails, phone numbers and/or card numbers.
  3. Click Anonymize; the masked copy appears in anonymized.json.
  4. Copy the result, or use the full-window button to review large documents.
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Tips & use cases
  • The structure and keys stay the same, so the masked JSON still works in tests and repro steps.
  • Masking is pattern-based - review the output before sharing, especially free-text fields such as notes.
  • Nothing is uploaded: the data never leaves this page.