← All extensions

Chat Shield

Mask sensitive data before you talk to the AI

chromeedgebraveoperafirefox🔒 Zero telemetryVersion 1.0.0
Download the extension for ChromeDownload the extension for Firefox

Description

100% local scrubbing of PII and secrets in your text before you send it to ChatGPT, Claude or Gemini. A "Clean" button next to the composer detects and masks emails, phone numbers, IBANs, credit cards (Luhn-validated), API keys (OpenAI, AWS, GitHub), JWT tokens, IP addresses and Italian tax codes, replacing them with placeholders like [EMAIL] or [IBAN] and showing how many entities it removed. No network, no telemetry: everything happens in your browser. It never sends the message automatically.

Features

  • 100% offline scrubbing: no data leaves the browser
  • "Clean" button injected next to the ChatGPT, Claude and Gemini composer
  • Detects emails, phones, IBANs, cards (Luhn), API keys, JWT, IP, Italian tax code
  • Replaces matches with readable placeholders ([EMAIL], [IBAN], [CARTA], …)
  • Shows the count of masked entities after each clean
  • Popup with a manual tool: paste text and get the sanitized version
  • Never auto-sends the message; the user stays in control

Privacy

100% local processing in your browser. Zero telemetry: no data is sent to external servers.

Required permissions

  • storage

Screenshots

Chat Shield

Supported browsers

chromeedgebraveoperafirefox