For consultants
Use AI on client work without leaking client details. Mask the documents, run them through your favorite model, then unmask.
AI Redaction
Mask
Starting at SGD 49 / user / month
Redact for AI, automatically.
Mask strips sensitive information from documents before you feed them to an AI — names, addresses, account numbers, anything you specify.
Get started
Smart detection
Identifies PII automatically using on-device models.
Custom rules
Define your own patterns — internal IDs, code names, anything else.
Reversible
Keep a private key to restore originals when you're done.
For everyone
AI tools are useful but careless. Mask is a one-step filter that keeps your inputs private.