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Preview of PasteGuard: Sensitive Data Shield

PasteGuard: Sensitive Data Shield by yasir_dev

Filters sensitive data from your clipboard when pasting on websites like ChatGPT. Protects API keys, tokens, and corporate IP.

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Extension Metadata

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popup on chatgpt.comPowerful Regex and Text-based rules automatically detect and mask sensitive data like IP addresses, API keys, and tokens.Manage your monitored sites. PasteGuard remains inactive on other domains to ensure maximum privacy and performance.Live Sandbox Testing: Instantly verify how your rules transform sensitive text before you paste it into an AI chat.Seamlessly import and export your custom rule sets as JSON. Share specific rule groups with your team or backup your settings.Remote Rule Feeds: Subscribe to external policy URLs (Gist, GitHub, Intranet) to sync company-wide security rules effortlessly.
About this extension
Stop Shadow AI from leaking your sensitive data.

PasteGuard is a browser extension that sits between your clipboard and the webpage. When you paste text on a monitored site, PasteGuard automatically detects and masks sensitive data before it reaches the page.

Key Features:
- Automatic Detection: Built-in rules for IPv4/IPv6, API keys, AWS/GitHub tokens, and more.
- Reverse Mapping (BETA): Copying masked text back restores the original values to your clipboard locally.
- Remote Feeds: Subscribe to remote JSON URLs to sync security policies across your team.
- Custom Rules: Create your own regex or text-based filters.
- 100% Local: All processing happens in your browser. No data is ever sent to our servers.

Why PasteGuard?
Workers often use AI tools like ChatGPT or DeepSeek to analyze logs or code. Without protection, this can lead to "Shadow AI" data leaks. PasteGuard ensures your corporate secrets stay internal.
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Permissions and data

Required permissions:

  • Get data from the clipboard
  • Access your data for all websites

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Version
1.0
Size
100.16 KB
Last updated
4 days ago (Mar 21, 2026)
Related Categories
  • Web Development
  • Privacy & Security
License
MIT License
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Tags
  • privacy
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