Emoji Collage Maker
A web-based tool that transforms any image into a collage composed entirely of emojis.
Overview
This tool analyzes an uploaded image pixel by pixel and replaces each pixel with the emoji that best matches its color. It uses a large, pre-processed palette of emojis and a sophisticated color-matching algorithm to create surprisingly detailed and colorful results.
Features
- Image-to-Emoji Conversion: Upload any image to see it recreated with emojis.
- Customizable Output: Adjust the resolution (number of emojis) and the background color of the final collage.
- Smart Background Suggestion: Automatically suggests a background color by analyzing the borders of your uploaded image.
- Advanced Color Matching: Converts colors to the CIELAB space to find emojis that are perceptually closest to the original pixel colors.
- Large Emoji Palette: On first use, the tool generates and caches a comprehensive palette of thousands of emojis and their corresponding colors for accurate matching.
- Multiple Export Options: Download your finished collage as a high-resolution PNG, a scalable SVG, or open it in a new full-page tab.
- Interactive Preview: Zoom in and out of the generated collage to inspect the details.
- Client-Side Privacy: All image processing and collage generation happens locally in your browser. No data is sent to a server.
Usage
- Open the Emoji Collage Maker.
- On your first visit, the tool will take a moment to build and cache its emoji color palette. A progress bar will be displayed.
- Upload an Image using the file input.
- Optionally, adjust the Resolution and Background Color.
- Click Generate Collage.
- Use the preview controls to zoom, or use the download buttons to save your creation.
Technical Details
- Framework: Built with Preact and styled with TailwindCSS, loaded via CDN.
- Image Processing: Uses the HTML5 Canvas API to read pixel data from the uploaded image.
- Color Science: Implements RGB to CIELAB color space conversion for more accurate, human-perception-based color matching.
- Performance: Caches the extensive emoji color palette in
localStorage to significantly speed up subsequent visits.
Credits
Created by Oskar Austegard (@oaustegard)
For issues, feature requests, or contributions, please open an issue on GitHub.