DataPlain
DataPlain provides a Chrome browser extension that detects and redacts sensitive personal information before users paste text into AI tools like ChatGPT, Claude, or any other web application. The extension identifies 15+ categories of PII—including social security numbers, credit card numbers, and phone numbers—with all processing performed locally in the browser, ensuring data never leaves the user's device.
- Cybersecurity
- Software Only
Funding
Founders
Founder details are not available yet.
Product
Problem
Accidental data leaks occur when users copy and paste text containing sensitive information into web applications such as ChatGPT, Claude, or collaborative platforms. Human error accounts for 68% of data breaches, and once shared, sensitive data becomes permanently stored and indexed by systems the user never intended to receive it.
Solution
DataPlain is a Chrome browser extension that detects and removes sensitive data before it is pasted into websites like ChatGPT, Claude, or other web apps. When a user copies text, a popup instantly analyzes it for over 15 types of personal information, including phone numbers, credit card numbers, social security numbers, and addresses. Users can review highlighted findings and redact or delete sensitive data with a single click. All processing occurs locally in the browser, ensuring data never leaves the user's device or transits through external servers.
Target Audience
Primary users are individuals and teams who regularly interact with AI tools, customer support platforms, and collaborative workspaces, including employees handling customer data, financial information, or other personally identifiable information.
Features
- On-copy detection of 15+ PII categories including social security numbers, credit card numbers, phone numbers, email addresses, and names
- One-click redaction or deletion of detected sensitive data before pasting
- Site exclusion list to disable protection for trusted internal tools
- Local browser-only processing with sub-50ms response time and no data transmission to external servers
- Universal protection across any website or web application
- Lightweight design with minimal impact on browser performance
- Upcoming features include real-time protection across all websites, Google Docs support, and non-intrusive warnings