Automatically catches passwords, API keys, and personal data in your prompts and redacts them before they reach any AI chatbot.
Users
39
+6 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
4
0 in 30 days
Store rank
#118K
#98K among extensions
Version
1.0.1
updated 15 Mar 2026
Users
monthly, 7 months
Latest, 15 Oct 2026:39 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 15 Oct 2026:4 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Prompt Armour — Redact Secrets & PII from ChatGPT, Claude & Gemini
Once you paste sensitive data into an AI chatbot, you can't take it
back. Prompt Armour catches it before it's sent — automatically,
locally, in your browser.
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HOW IT WORKS
1. Type or paste into any supported AI chatbot
2. Sensitive data is highlighted in real-time as you type
3. Click Redact — secrets are replaced with safe placeholders
4. Send your prompt. The AI gets context without your secrets.
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WHAT IT CATCHES
Developer Secrets:
- AWS Access Keys, Secret Keys, ARNs, EC2 instance IDs
- Database connection strings (MongoDB, PostgreSQL, MySQL, Redis)
- API keys, Bearer tokens, Authorization headers, session cookies
Personal Information:
- Passwords, emails, phone numbers, SSNs, credit card numbers
Network Data:
- IPv6 addresses, MAC addresses, internal network IPs
Unknown Secrets:
- Shannon entropy scanner catches high-randomness strings that
look like passwords or keys — even if they match no known pattern
Names & Locations:
- Lightweight NLP detection for names and places in your text
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REDACTION MODES
→ Smart Tags: [EMAIL-1], [AWS-KEY-2] — keeps context for the AI
→ Masking: ********** — classic obfuscation
→ Full Redaction: [REDACTED] — clean removal
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WORKS ON
- ChatGPT (chat.openai.com)
- Claude (claude.ai)
- Google Gemini (gemini.google.com)
UPCOMING ON 28 APR 2026
- Microsoft Copilot (copilot.microsoft.com)
- Perplexity (perplexity.ai)
- Grok (grok.com)
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BUILT FOR PRIVACY
- 100% client-side — all detection runs in YOUR browser
- Zero data transmission — nothing sent to any server, ever
- No accounts required — install and it works immediately
- No analytics, no tracking, no telemetry
- Shadow DOM isolation — our UI never touches the host page
We built a privacy tool. It would be embarrassing if it wasn't private.
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DESIGNED FOR CONTROL
- Toggle individual detection categories on or off
- Undo any redaction with one click
- Hover over redactions to selectively restore just that item
- Whitelist false positives for the current session
- Granular per-category settings — block AWS keys but allow
emails, or any combination you need
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WHY THIS EXISTS
Samsung engineers leaked proprietary source code through ChatGPT.
Amazon warned all employees about sharing data with AI tools.
Italy temporarily banned ChatGPT over privacy concerns.
You can't control what AI companies do with your data.
You CAN control what reaches them in the first place.
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FEEDBACK & SUPPORT
Independent and bootstrapped — built by a developer who got tired
of watching people accidentally paste secrets into AI.
Actively improving based on user feedback.
Found a bug or have a feature idea? We want to hear it.
Website: https://prompt-armour.vercel.app
Email: sharma.apoorva1@outlook.com
A 5-star review helps more than you know.