Text Anonymizer — masks emails, phone numbers, and card numbers right in your browser
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What to mask
Phone detection is a heuristic: it doesn't guarantee full coverage of every international number format.
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Is it free to use?
Yes, completely free and no sign-up needed. The tool runs entirely in your browser: the file never goes to a server, so the server spends neither CPU nor traffic — there is nothing to charge for. No watermarks, no limits on file size or count.