Anonymize Sensitive Data
Mask PII in text or redact PII from PDFs before sharing with LLMs or external parties
Use Scrambler Offline
With the offline copy there is no server involved at all, so a cautious user can satisfy themselves that nothing they paste can go anywhere. It covers text masking only, because PDF redaction needs the server.
Download offline version about 42 KB100% Private — Browser-Only Processing
Text masking happens entirely in your browser. Nothing is sent to any server. You can confirm this by opening your browser's Network panel and watching zero requests appear while you mask. When you close this tab, everything disappears.
① Paste Your Sensitive Text
Auto-detects: SSN, Email, Phone, IP, DOB, MRN, Account, Credit Card, Driver's License
Configure Masking
Presets
Detection Types
Always Mask (inclusions — override pattern detection, but exclusions take precedence)
Never Mask (exclusions — take precedence over pattern detection and always-mask)
This stores your always-mask and never-mask lists in the browser's localStorage. It is off by default because those lists often contain the very secrets Scrambler exists to protect.
Ephemeral Processing — Uploaded Only for Redaction
PDFs are uploaded to the server for processing and are not retained. The file exists only in memory for the moment it takes to redact it, then the buffer is cleared. No persistent storage, no logs of content, no database.