Sensitive Data Scanner
Paste text and get every email, phone number, SSN, bank card and IP address highlighted.
Redaction & masking Client-side Regex + checksum algorithms
Tool preview
How to use it
- 01
Paste the text you are about to share.
- 02
Review the findings list, grouped by type.
- 03
Copy the masked version and use that instead.
Limitations
- ! Detection is pattern-based plus checksum validation; unusual formats can be missed.
- ! It does not understand context — a test credit card number is still flagged.
FAQ
Which ID numbers are supported?
US Social Security numbers are checked for valid area, group and serial ranges; other national ID formats are not covered yet.
Is my text sent to a server?
No. Everything runs in this tab.
Can it redact a screenshot?
Not on this page — use the screenshot redaction tool, which runs OCR locally.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- Regex + checksum algorithms
- Category
- Redaction & masking
- Network requests
- None while processing