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Accessibility Helper

A TypeScript-based accessibility tool that enhances web page usability with customizable font sizes and display settings.

Features

  • Adjustable font size (increase, decrease, reset)
  • Greyscale mode
  • High contrast mode
  • Negative contrast mode
  • Link underlining
  • Readable font option (Arial)

Installation

To use the Accessibility Helper in your project, follow these steps:

  1. Install the package

    npm install @helptheweb/helper
    
  2. Import and initialize the Helper class in your TypeScript or JavaScript file:

    import Helper from '@helptheweb/helper';
    
    const accessibilityHelper = new Helper();

Usage

The Accessibility Helper automatically creates a UI panel that users can interact with.

Initialization Options

You can customize the Helper instance by passing options:

const options = {
  defaultFontSize: 18, // Default is 16
  buttonColor: '#007bff' // Default is '#1e232f'
};

const accessibilityHelper = new Helper(options);

Methods

While the UI provides buttons for all functions, you can also programmatically control the Helper:

// Adjust font size
accessibilityHelper.increaseFontSize();
accessibilityHelper.decreaseFontSize();
accessibilityHelper.resetFontSize();

// Toggle settings
accessibilityHelper.toggleSetting('greyscale');
accessibilityHelper.toggleSetting('highContrast');
accessibilityHelper.toggleSetting('negativeContrast');
accessibilityHelper.toggleSetting('underlineLinks');
accessibilityHelper.toggleSetting('readableFont');

Accessibility Considerations

This tool aims to improve web accessibility, but it's important to note that it should complement, not replace, good accessibility practices in your base website design.

Browser Compatibility

This tool should work in modern browsers that support ES6+ features. Ensure you're using appropriate polyfills or transpilation for older browser support.

Contributing

Contributions are welcome!