What is gwm.js?

gwm.js is a lightweight JavaScript library for generating watermarks in web applications. It provides a simple yet powerful way to add watermarks to your web pages, helping to protect sensitive information and track content distribution.

Why Use Watermarks?

Watermarks serve several important purposes in web applications:

1. Information Security: Watermarks can indicate the confidentiality level of information, reminding users to handle the content with appropriate care.

2. Leak Tracing: By including user-specific information in watermarks, you can trace the source of leaked information.

3. Copyright Protection: Watermarks can help establish ownership and deter unauthorized copying of content.

4. Brand Reinforcement: Subtle watermarks can reinforce your brand identity across all content.

Key Features

Multiple Watermark Types

gwm.js supports three different types of watermarks:

• Canvas: Renders watermarks using the HTML5 Canvas API, offering good performance and compatibility.
• SVG: Creates watermarks using SVG, providing better scaling for high-resolution displays.
• Element: Generates watermarks using DOM elements, allowing for more complex content and styling.

Anti-Tampering Protection

gwm.js includes built-in monitoring to detect and respond to attempts to remove or modify watermarks. When tampering is detected, the watermark is automatically regenerated.

Customization Options

The library offers extensive customization options:

• Text content and font settings
• Color and transparency
• Size and position
• Rotation angle
• Container selection

Lightweight and Fast

gwm.js is designed to be lightweight and performant, with minimal impact on your application's loading time and runtime performance.

Browser Compatibility

gwm.js works in all modern browsers, including:

• Chrome
• Firefox
• Safari
• Edge

Next Steps

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