# PasteGuard: Sensitive Data Shield

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

Canonical page: [https://chrome-stats.com/d/pasteguard-shield](https://chrome-stats.com/d/pasteguard-shield)

## Overview

- **ID:** `pasteguard-shield`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** yasir\_dev
- **Category:** web-development,privacy-security
- **Version:** 1.0
- **Last updated:** 2026-03-24
- **First published:** 2026-03-21
- **Size:** 100 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/pasteguard-shield/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/pasteguard-shield/privacy/](https://addons.mozilla.org/firefox/addon/pasteguard-shield/privacy/)

## Description

<strong>Stop Shadow AI from leaking your sensitive data.</strong>

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 <strong>before it reaches the page</strong>.

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

<strong>Why PasteGuard?</strong>
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.

## Rankings

- #140,738 — Overall

## Permissions and access

### Permissions

- `storage`
- `clipboardRead`
- `activeTab`
- `alarms`

### Host permissions

- `<all_urls>`

### Content script matches

- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [PasteGuard](https://chrome-stats.com/d/pasteguard22) — 1 users
- [Paste\_Guard](https://chrome-stats.com/d/paste_guard)
- [AI Paste Guard](https://chrome-stats.com/d/ai-paste-guard) — 1 users
- [SafeRelay - Local AI DLP](https://chrome-stats.com/d/safepaste-enterprise) — 1 users
- [Prompt Guard](https://chrome-stats.com/d/prompt-guard) — 1 users
- [CleanMyPrompt - AI Privacy Firewall](https://chrome-stats.com/d/cleanmyprompt-ai-firewall)
- [PasteProof](https://chrome-stats.com/d/pasteproof)
- [Prompt Armour — AI Privacy Guard](https://chrome-stats.com/d/prompt-armour-ai-privacy-guard) — 1 users
- [Privatiser](https://chrome-stats.com/d/privatiser) — 7 users
- [Sqreen - DLP for AI Tools](https://chrome-stats.com/d/sqreen-dlp-for-ai-tools)
- [GuardFlow - Secret Detector](https://chrome-stats.com/d/guardflow-secret-detector)
- [PromptProtect](https://chrome-stats.com/d/promptprotect)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/pasteguard-shield)