Generate app main image

A Python script that generates beautiful images with gradient backgrounds and centered color emojis. This is useful to generate the image of an application

Features

• Gradient Background: Creates a diagonal gradient (135°) with customizable colors
• Color Emojis: Renders emojis in full color using the Twemoji library (same emojis as Twitter/web browsers)
• Customizable: Control image size, emoji size, and colors
• Simple: Easy-to-use command-line interface

How It Works

1. Color Processing: Converts hex color to RGB and creates a lighter variant for the gradient start
2. Gradient Creation: Generates a 135° diagonal gradient from light (15% opacity) to full color
3. Emoji Rendering: Uses the pilmoji library to render color emojis from Twemoji
4. Centering: Automatically centers the emoji in the image
5. Output: Saves the final image as PNG

Technical Details

Gradient Algorithm

The script creates a diagonal gradient at 135 degrees (from top-right to bottom-left) by:

• Mixing the base color with white at 15% for the start color
• Using the full base color for the end color
• Interpolating colors pixel-by-pixel along the diagonal

Emoji Rendering

Color emojis are rendered using the pilmoji library, which:

• Downloads Twemoji assets (Twitter's open-source emoji set)
• Composites them onto the image with proper transparency
• Maintains full color fidelity

Dependencies

• numpy: For efficient gradient calculations
• Pillow (PIL): For image creation and manipulation
• pilmoji: For color emoji rendering
• emoji: Required by pilmoji (version 2.2.0 for compatibility)