Auto-Redact PII
Automatically detect and black out emails, phone numbers, and IDs.
- 100% Private
- No Limits
- Works Offline
or drag and drop here
Automatically detects and blacks out emails, Thai phone numbers, and Thai national/tax ID numbers. This is a best-effort scan, not a guarantee — review the result before sharing a sensitive document.
Scan a PDF for emails, Thai phone numbers, and Thai national/tax ID numbers, and black them out automatically — using the same true rasterize-and-rebuild redaction as the manual Redact PDF tool, so nothing selectable is left underneath.
How to use this tool
- 1
Upload your PDF
Click the upload area or drag in the document you want scanned.
- 2
Scan and redact
The tool finds matching emails, phone numbers, and ID numbers and blacks them out.
- 3
Review and download
Check the redacted result before sharing it — automatic detection is a best effort, not a guarantee.
Why use this tool
Nothing leaves your device
Detection and redaction both run locally in your browser — your document is never uploaded.
Real redaction, not an overlay
Matched pages are rasterized with the redaction baked into the pixels — there's no text left underneath to copy or extract.
Built for Thai documents
Recognizes Thai mobile/landline number formats and the 13-digit Thai national/tax ID pattern, not just generic digit runs.
Common use cases
Sharing a scanned contract
Strip contact details and ID numbers before sending a document to someone outside your organization.
Publishing a redacted report
Remove personal identifiers from a report before posting it publicly.
Pre-screening before upload
Catch PII you forgot was in a document before it goes somewhere it shouldn't.
Pro tips
- This is a best-effort scan — always review the result before sharing a sensitive document.
- Need to redact something the automatic scan missed (like a name or address)? Use Redact PDF to mark it manually.
- A page with no matches keeps its original content untouched — only pages with a detected match get rasterized.