Mask Personal Data in Lists
Columns are detected automatically and masked (J*** D**, ***-***-5678). Download as .xlsx or copy as text.
Drop an Excel (.xlsx) or CSV list
Names, phones, emails and addresses are detected and masked
Or paste cells copied from Excel
Rule for each column (auto-selected)
Your original file is untouched and never leaves this device.
This tool runs entirely in your browser. Nothing you add is uploaded to any server.
Last checked: · Made by Fingertip Workshop
How to use
- 1
Drop an .xlsx or .csv.
- 2
Check the rule for each column.
- 3
Preview masked vs. original.
- 4
Download or copy.
Local only
The file is parsed and rewritten entirely in your browser.
FAQ
Uploaded?
No.
Old .xls files?
Save as .xlsx or CSV first.