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PII & Sensitive Data Masker

Privacy & Redaction

Automatically detect and redact emails, phone numbers, IP addresses, credit card numbers (Luhn-validated), SSNs, and API keys from text using high-speed regex. Safe AI prompt sanitizer.

100% Client-Side In-Memory Sanitization

All pattern matching, Luhn checksums, and string redactions execute locally on your device. Your sensitive data, logs, and customer records are never transmitted across the network.

"Redaction Target Filters & Style"

"Select which data types to sanitize and choose the redaction placeholder"

3/3 Free Daily Uses
"Masking Style:"
0 chars
0 masked
Emails
0
Phones
0
IP Addrs
0
Cards
0
SSN / IDs
0
API / Keys
0
Tool Overview & Guide

What is PII & Sensitive Data Masker?

Automatically detect, mask, and redact sensitive data from text, chat logs, customer tickets, and database records before sharing publicly or sending to AI LLM prompts. 100% in-browser pattern matching with zero data leaks.

Technical Specifications & Supported Formats
Processing Engine:SubtleCrypto Web API (Hardware-Accelerated 256-bit AES/SHA)
Privacy & Security:100% In-Browser (Zero File Upload)
Supported Formats:Plaintext, SHA-256, AES-GCM, PII patterns
Max File Limit:Local In-Memory

How to use PII & Sensitive Data Masker

3 simple steps to complete your task directly in your browser:

  1. Paste Raw Text or Logs

    Paste any raw unstructured text, server logs, customer transcripts, or JSON payloads into the input area.

  2. Select Masking Targets

    Toggle specific redaction filters: Email addresses, IPv4/IPv6, phone numbers, credit card numbers (Luhn checked), social security numbers, and API tokens.

  3. Choose Redaction Style

    Select your preferred visual redaction style: Tagged placeholders (e.g. [EMAIL], [PHONE]), Asterisks (****), or Blackout blocks (████).

Common uses

  • Sanitizing Prompts for ChatGPT & AI Models: Strip real customer emails, phone numbers, API keys, and corporate IPs before pasting logs or queries into external generative AI tools.
  • Customer Support & Bug Tracking: Scrub sensitive user identifiers from Zendesk or Jira tickets, crash dumps, and HAR logs before attaching them to public issue trackers.
  • GDPR, HIPAA & CCPA Compliance: Ensure data privacy compliance when sharing sample datasets, database extracts, or analytics reports with third-party contractors.
  • Developer Documentation & Code Snippets: Mask live production credentials, server IPs, and JWT tokens in tutorial README files and blog articles.

Why choose VersaTools

100% private

Your files are processed inside your browser and are never uploaded to a server.

Free, no account

No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.

Instant

No upload, no queue, no server round-trip — work starts the moment you drop a file.

Runs in your browser

Built on open web standards. Works on any modern desktop browser, nothing to install.

No upload size caps

Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.

Yours to keep

Results download straight to your device in clean, standard file formats.

Frequently asked questions