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Security · browser workspace

Anonymize CSV Data - Remove Personal Information

Mask selected CSV values locally in your browser. Keep the first and last character where possible and review the result before sharing.

Quick start

Built for mask specific columns (e.g., email -> j***@gmail.com).

Everything runs in your browser, so you can test the workflow with sample data when available before using production files.

Output: A new file or report produced locally in your browser.

  1. 1Choose a supported file or use sample data when available.
  2. 2Set the options shown for this workflow.
  3. 3Process the file locally, inspect the result, and download a new copy.
Preparing your private workspace…

How to Anonymize Data

  1. 1Upload your CSV file with sensitive data
  2. 2Select columns to anonymize
  3. 3Download the CSV with selected values masked

Why Use This Tool?

  • ✓Privacy Support - Mask selected personal-data fields
  • ✓Testing & Development - Reduce exposure of selected values
  • ✓Visible Masking - Review exactly what remains
  • ✓Choose Columns - Select what to anonymize
  • ✓Client-Side Only - Your real data never leaves your browser

Frequently Asked Questions

What data can be anonymized?

Any selected text column can be masked. Values keep the first and last character when possible, with the middle replaced by asterisks.

Is anonymization reversible?

The output does not contain the complete original value, but short masks can still reveal information. Treat this as masking and review re-identification risk.

Why anonymize data?

For lower-risk test data and demonstrations after you review whether the masking is sufficient for your use case. It does not by itself establish legal compliance.