100% On-Device · No Cloud · No Tracking

Privacy guard for AI conversations

It's easy to paste something sensitive into ChatGPT or Claude without thinking. PII Shield notices personal details as you type and warns you before you send them. Everything stays on your own computer.

⭐ Add to Chrome - Free Privacy Policy
9
International Patterns
150+
Countries Supported

See It In Action

Watch PII Shield catch sensitive details in a typical legal prompt, or type your own. This preview runs entirely in your browser.

▶ Live sample, or click in and type your own
👆 Type or paste text to see detections

This preview shows pattern detection only. The installed extension adds an on-device AI model that also catches names, organisations and locations.

🔒 Zero data collection. All scanning happens locally inside your browser tab. Nothing is ever sent to a server. Your data never leaves your device.

Works with the AI tools you already use

🤖 ChatGPT
📚 Claude
✨ Gemini
🔷 Copilot
🐦 Grok
⚡
Warns you as you type
It checks your text in well under a second, so you won't notice it working. Patterns catch things like card and ID numbers; a small AI model handles names, organisations and places.
🧠
Runs on your computer
The 27 MB model lives inside your browser. There's no GPU to install and no sign-up, and nothing you type ever gets uploaded.
🔍
Knows what to look for
Emails, phone numbers, credit cards, bank details, PAN and Aadhaar, NHS and NI numbers, postcodes, dates of birth, and more.
🛡️
Tells you what's serious
Each finding is marked high, medium or low risk. A side panel breaks it all down and lets you copy a report if you need one.
🔒
Only where you want it
It runs only on the AI sites you choose, stays off every other website, and keeps none of your data.
🌍
Made for India, and beyond
Phone formats from around the world (+91, +44, +1…) alongside India-specific IDs like PAN and Aadhaar, plus UK numbers such as NI, NHS and sort codes.

Fast enough that you forget it's there

Because everything runs on your own machine, there's no network wait and no lag while you type.

50ms
Detection latency (imperceptible to users)
2,500
Tokens/second inference speed
28MB
Quantized ML model size
0%
Data sent to servers

What Users Are Saying

Every review is verifiable on the Chrome Web Store.

★★★★★

"Tried this extension and it actually works really well. Whenever I typed my email, phone number, or bank-related information into AI tools, it instantly gave a warning and highlighted the sensitive data. Very useful privacy-focused tool for anyone using AI chats regularly."

Harshvardhan Solankure • May 2026

Verified review ↗
Coming Soon

When AI replies in a language you don't read

We're working on Dual Language. When an AI replies in Hindi, Marathi, Spanish or another language, PII Shield will translate it back into yours, right there in the page. Like everything else, it runs on your device, with nothing to set up and nothing sent away.

🔤
Auto-Detect
Recognizes any language instantly
⚡
Instant
Translates in the page, no waiting on an API
🔒
Private
Your text isn't sent to a translation service
Coming in the Next Weeks

Built for India's Legal Professionals

When drafting contracts, case summaries, or client letters in ChatGPT or Claude, sensitive details slip through. A case number. An Aadhaar ID. A client's home address. One paste into an AI tool compromises confidentiality and professional ethics.

PII Shield is expanding with protections built specifically for Indian legal practice:

⚖️
Legal PII Detection
Aadhaar, PAN, Bar Council numbers, court case IDs, judgement references, client names
🇮🇳
Regional Language Support
Draft in Hindi, Marathi, Tamil, Telugu, Kannada and protect sensitive data in your working language
🔐
Fits how you already work
Built around the tools Indian law firms use every day, with all scanning kept on your own device

Early access available for legal professionals interested in testing these features.

What's Next

🎉 v1.0.6 (June 2026) - Available Now
International PII Detection
  • 🇺🇸 US: SSN, Driver's License
  • 🇦🇺 Australia: Tax File Number
  • 🇨🇦 Canada: SIN
  • 🇩🇪 Germany: Tax ID
  • 🇫🇷 France: SIRET/SIREN
  • 🇮🇳 India: Aadhaar, PAN, Postal Code
  • ✓ 9 patterns • 66 unit tests • Production ready
v1.1.0
User Experience
  • 🔴 Redact button (replace with [REDACTED])
  • 📊 Session stats & history
  • 🎯 Severity filters
  • 💾 Export reports (CSV/JSON)
  • ⚙️ Advanced settings
  • ETA: 4-6 weeks
🚀 v2.0.0 (In Development)
ML-Powered & GPU-Accelerated
  • ✓ Quantized ONNX models
  • ✓ Hardware detection engine
  • ✓ WASM inference (2,500 tok/sec)
  • ⚡ WebGPU ready (2-4x speedup)
  • 🔗 Contextual NER detection
  • Performance verified • Ready for testing
🌍 v2.1.0 - Dual Language
Smart Translation Layer
  • 🔤 Auto-detect response language
  • 💬 Real-time translation to user preference
  • 🚀 Token-efficient inference
  • 🌏 Support 100+ languages
  • ⚡ On-device, zero-latency
  • Coming Soon

Timeline may shift based on user feedback. Follow updates at GitHub