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Safe Privacy Mask Review

Safe Privacy Mask is a Chrome extension that masks sensitive data within the browser before it is sent to AI tools or web forms, ensuring on-device privacy.

shipped Aug 31, 2026codefree
codemarketing
Safe Privacy Mask — product screenshot

Why it matters

1Operates entirely on-device within the user's browser, preventing external data transmission for masking.
2Detects and replaces email addresses, phone numbers, API keys, and ID numbers based on string patterns.
3Offers a free tier for all its functionalities.
4Supports custom detection rules for specific customer names, project names, or internal system names.

About Safe Privacy Mask

Platforms
Chrome Extension
Target Audience
Individuals needing to protect personal information before sending it to AI tools.

Pricing Plans

Free
Free
  • • No account needed
  • • Masking runs on device
  • • Detection and masking finish inside your browser

overview

What is Safe Privacy Mask?

Safe Privacy Mask is a privacy-enhancing browser extension tool developed by legacy-tools.dev that enables individuals concerned about data privacy to mask sensitive information before it is sent to AI chats and web forms. It operates entirely within the user's browser, ensuring that no data leaves the device unmasked.

features

Key Features of Safe Privacy Mask

Safe Privacy Mask provides several features designed to give users control over their data privacy when interacting with online services, particularly AI tools. The extension's core functionality revolves around on-device data masking, ensuring sensitive information remains local.

  • User-defined masking rules: Users decide what specific data types or patterns to hide.
  • On-device processing: All detection and masking operations occur locally within the user's browser.
  • In-field masking: Sensitive data is masked directly within input fields before submission.
  • Automatic detection: Identifies and replaces common sensitive data like email addresses, phone numbers, and API keys.
  • Custom rule registration: Allows users to define and mask specific customer names, project names, or internal system names.
  • Site-specific control: Enables or disables masking functionality on a per-site basis.
  • Adjustable masking timing: Users can choose when the masking process is applied.
  • Privacy-focused design: Contains no ads, analytics, or telemetry.

use cases

Who Should Use Safe Privacy Mask?

Safe Privacy Mask is designed for individuals and professionals who prioritize data privacy when interacting with AI tools and web forms. Its on-device processing model makes it suitable for scenarios where data confidentiality is paramount.

  • Individuals interacting with AI chat services (e.g., ChatGPT, Gemini, Claude) who need to mask personal information in drafts, logs, or notes.
  • Professionals consulting AI about error logs or code containing API keys, tokens, or IP addresses.
  • Users summarizing or proofreading emails with AI, requiring the masking of email addresses and phone numbers.
  • Anyone translating or summarizing customer correspondence with AI, needing to replace customer names or project names via custom rules.
  • Users requiring privacy protection on general web forms not supported out-of-the-box, by registering specific input fields.

how to use

How to Use Safe Privacy Mask

To begin using Safe Privacy Mask, users install the Chrome extension and configure its settings to define what information should be masked. The extension then automatically applies these rules to input fields.

  • 1Install the Safe Privacy Mask extension from the Chrome Web Store.
  • 2Access the extension settings to define specific data types (e.g., emails, phone numbers) for masking.
  • 3Register custom detection words, such as customer names or project names, to be replaced with a chosen string.
  • 4Enable or disable the masking functionality for specific websites as needed.
  • 5Paste sensitive content into AI chat services or web forms; the extension will mask identifiable information before submission.
  • 6Utilize the option to register specific input fields for masking on websites not automatically supported.

pricing

Safe Privacy Mask Pricing & Plans

Safe Privacy Mask is offered as a free Chrome extension. All its features, including custom rules and on-device processing, are available without any cost.

  • Free: All features included.

Pros

  • +Ensures data privacy by performing all masking operations locally within the browser.
  • +Offers a free tier with full functionality, making it accessible to all users.
  • +Provides flexible masking options, including automatic detection and custom rule registration for specific data.
  • +Compatible with major AI chat platforms like ChatGPT, Gemini, and Claude.
  • +Allows site-specific control, enabling users to manage masking preferences for different websites.
  • +Designed without ads, analytics, or telemetry, enhancing user trust and privacy.

Cons

  • −Limited to the Chrome browser, excluding users of other web browsers.
  • −Requires manual configuration for custom rules and unsupported web forms.
  • −As a browser extension, its functionality is confined to web-based interactions and does not extend to desktop applications.
  • −The provided URL (legacy-tools.dev) might suggest a stable but potentially less frequently updated status compared to actively developed tools.

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