How to Use the Text Masking Tool
The Text Masking Tool automatically finds personal information — names, phone numbers, emails, and Social Security Numbers — before you share a document or post, and masks it with asterisks. Paste your text in and the tool matches each pattern with a regular expression, keeping only a few characters visible and hiding the rest.
Phone numbers keep only the area code and last four digits, emails keep just the first letter of the username, and SSNs are masked down to the last four digits, making it hard to guess the original value. Names are recognized when preceded by a title like "Mr." or "Dr." and only the name itself is masked.
Use it before sharing a customer support thread with your team, quoting a case study in a blog post or slide deck, or posting a screenshot of a conversation online — masking first means you can share safely without worrying about leaking someone's personal details. Everything is processed locally in your browser and nothing is sent to a server.
Frequently Asked Questions
No, masking here is one-way and cannot be undone. Keep the original text safe separately before sharing the masked version.
No, all text is processed locally in your browser and never sent to or stored on a server.