Private
Your document stays on your computer. Turn your Wi-Fi off and it still works.
Local-only · Open source
Mask the personal. Paste the rest.
The free, open-source app that swaps the personal details in any document for realistic fakes. It runs entirely on your machine.
Windows · macOS · Linux — no account, no upload.
Before
Name: Michael Thompson SSN: 482-19-3756 Account: 1029384756 Balance: $48,210.55
After
Name: Daniel Foster SSN: 837-44-1920 Account: 6647201938 Balance: $48,210.55
Redaction level sets how much is hidden: Light · Standard · Heavy.
Replacement sets what it becomes: Fake, Mask, or a [REDACTED] label.
Shown at the default (Standard level, Fake replacement): the identity is gone, the numbers stay, and it all runs offline on your machine.
Open Source
Open source (AGPL-3.0). Read the code and check it for yourself.
Free
Free, forever. No account, no upload, no catch.
Simple
Drop a file, get a clean one. The fake data keeps it readable, so AI can still help.
How it works
Three steps, all on your machine.
Drop a file
A PDF or text file goes in. It stays on your machine.
Personal details masked, numbers kept
Names, SSNs, and accounts become realistic fake data. The figures that matter stay put.
Paste into AI or share
Get a clean, readable copy you can hand to a chatbot or anyone, without giving away who you are.