What types of sensitive data can this tool mask?

It can mask phone numbers, email addresses, ID card numbers, and bank card numbers.

Can I customize how many digits are shown?

Yes, you can set the number of digits to preserve at the beginning and end.

What mask characters are available?

You can choose from asterisk (*), bullet (•), or lowercase x.

Is the tool secure for sensitive data?

The tool processes data locally in your browser; no data is sent to servers.

Can it handle international formats?

Yes, it detects phone numbers and ID cards in various international formats.

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Text Processing

Sensitive Data Masker

Automatically detect and mask sensitive information like phone numbers, emails, ID cards, and bank cards in text

Execution

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Inputs

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7 options

ContentPaste or type the main input values.1

Input TexttextareaRequired

SettingsAdjust formats, ranges, numbers, and modes.2

Preserve DigitsnumberOptionalNumber of digits to preserve at the beginning and endMask CharacterselectOptionalCharacter to use for masking

TogglesEnable or disable optional behavior.4

Mask Phone NumberscheckboxOptionalEnabled when checkedDetect and mask phone numbers (China, US, and international formats)Mask Email AddressescheckboxOptionalEnabled when checkedDetect and mask email addressesMask ID Card NumberscheckboxOptionalEnabled when checkedDetect and mask ID card numbers (Chinese ID, US SSN, etc.)Mask Bank Card NumberscheckboxOptionalEnabled when checkedDetect and mask bank card numbers (Visa, Mastercard, Amex, etc.)

Result

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Samples

Sensitive Data Masker

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Inputs

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Masking Customer Data in Support Logs

2. Anonymizing Survey Responses

FAQ

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