CSV PII Masker
Mask emails, phone numbers, and IP addresses in CSV files. Redact or hash sensitive data instantly.
100% client-side processing - your files never leave your browser
Email
jo***@mail.com
Phone
+1 *** **** 123
Upload Your File
Drag & drop a file here
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Supported formats: CSV, XLSX, XLS (max 50MB)
Frequently Asked Questions
Common questions about this tool.
The next step is getting it into the sheet
This tool cleans the file up. SmoothSheet writes it into Google Sheets from our servers, so the rows land as one import instead of a frozen tab — however many there are.
Import a file to Google SheetsGoogle sign-in, no card. Free plan covers 10 uploads a month.