PII Guardian - AI-Powered LLM Protection

AI-powered PII detection using on-device AI. Automatically masks personal data before sending to ChatGPT, Claude, Gemini & more.

As of June 2026, PII Guardian - AI-Powered LLM Protection has 1 users in the Privacy & Security category.

Privacy & Security

Chrome Web Store ↗.crx

Users0%

Rating0%

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— reviews

Reviews0%

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Version

2.0.0

Manifest V3

History

4 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	1	—	—	2.0.0
Apr 16, 2026	2	—	—	2.0.0
May 18, 2026	1	—	—	2.0.0
May 24, 2026	2	—	—	2.0.0
Now	1	—	—	2.0.0

Permissions & access

Permissions: storagetabsoffscreenalarms
Host access: https://chatgpt.com/*, https://chat.openai.com/*, https://claude.ai/*, https://gemini.google.com/*, https://copilot.microsoft.com/*, https://bard.google.com/*, https://raw.githubusercontent.com/*

Screenshots

PII Guardian - AI-Powered LLM Protection screenshot 1

PII Guardian - AI-Powered LLM Protection screenshot 2

About

PII Guardian — AI-Powered PII Protection for ChatGPT, Claude and Gemini
Stop accidentally leaking personal data to LLMs. PII Guardian is a Chrome extension that runs an on-device AI model directly in your browser — no servers, no API calls, your data never leaves your device.
What it detects and masks automatically:

Names (AI-powered)
Email addresses
Phone numbers (all international formats)
Employee IDs and SSNs
Company and Organisation names (AI-powered)
Locations (AI-powered)

Key Features:

On-device AI model bundled with extension
Hybrid AI plus Regex detection for maximum accuracy
Works on ChatGPT, Claude, Gemini 
Works offline — no internet required
Real-time masking before text is sent
Zero API costs, zero server infrastructure