ConvertCSV

Privacy Tools

Anonymize CSV

Replace selected columns with irreversible fake tokens. Runs locally in your browser — nothing is uploaded for processing.

Input

Paste CSV or upload a file

Options

Output Preview

Result

Run the tool to preview output here.

Anonymize CSV

Anonymize CSV replaces selected column values with opaque tokens like email_0001. Empty cells stay empty.

Everything runs in your browser. File contents are not uploaded to a server for this tool.

Key features

  • Client-side processing
  • Copy or download results
  • Works with paste or upload where applicable

About the CSV to CSV format

Tokens are not reversible — use Mask if you need partial recognizability.

Common use cases

  • Sharing samples with vendors
  • Demo datasets

How to use this tool

  1. Provide input (CSV, schema, or ciphertext).
  2. Set options if shown, then run the tool.
  3. Copy or download the result.

Tips for best results

  • List every sensitive column explicitly.
  • Preview output before sharing or importing.

Common pitfalls

Keep a copy of the original file — transforms can be hard to reverse.

Frequently asked questions

Is my data uploaded?

No. Processing stays in your browser tab.

For more background on data formats and conversion workflows, read our format guides or browse the converter blog for step-by-step walkthroughs linked to each tool.