Data Anonymizer

Mask sensitive data (emails, names, phones, SSNs, credit cards) in CSV, JSON, or SQL. Add custom regex rules for any pattern. All processing happens in your browser.

How to use:

  1. Upload a .csv, .json, or .txt file — or paste data directly
  2. Select which data types to mask using the checkboxes
  3. Toggle 'Realistic fake data' for format-preserving anonymization
  4. Click "Anonymize Data" to apply masking rules
  5. Copy or download the anonymized output for safe testing
4 rules active

Masking Rules

4 active

Add Custom Rule

i

Input Data (CSV / JSON / SQL)

Anonymized Output

Click "Anonymize Data" to see results.

SQL Formatter

Beautify messy SQL into clean, readable queries instantly.

CSV to SQL

Turn pasted CSV data into ready-to-run INSERT statements.

JSON ↔ SQL

Convert JSON arrays to SQL and SQL results back to JSON.

JOIN Visualizer

See how INNER, LEFT, RIGHT, FULL & CROSS joins differ.