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javierbyte logoimg2css

Convert any image to pure CSS. Recreates images using only box-shadows.

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Quick Overview

img2css is a unique project that converts images into pure CSS. It generates a single div element with box-shadow properties to recreate the image using only CSS, resulting in a pixel-perfect representation of the original image without using any actual image files.

Pros

  • Creates lightweight, scalable image representations using only CSS
  • Eliminates the need for image files, potentially reducing load times
  • Provides an interesting and creative approach to image rendering on the web
  • Can be used for artistic or experimental web design projects

Cons

  • Generated CSS can be extremely large for complex images
  • Not practical for most real-world use cases due to performance concerns
  • Limited browser support for very large numbers of box-shadow properties
  • Lacks support for transparency or advanced image features

Code Examples

  1. Basic usage:
import { convertImageToCSS } from 'img2css';

const imageUrl = 'path/to/your/image.jpg';
const cssOutput = convertImageToCSS(imageUrl);

console.log(cssOutput);
  1. Customizing pixel size:
const options = {
  pixelSize: 10 // Default is 1
};

const cssOutput = convertImageToCSS(imageUrl, options);
  1. Applying the generated CSS:
<div id="image-container"></div>

<style>
  #image-container {
    width: 1px;
    height: 1px;
    /* Paste the generated CSS here */
    box-shadow: /* ... */;
  }
</style>

Getting Started

To use img2css in your project:

  1. Install the package:

    npm install img2css

  2. Import and use in your JavaScript:

    import { convertImageToCSS } from 'img2css';

const imageUrl = 'path/to/your/image.jpg';
const cssOutput = convertImageToCSS(imageUrl);

// Use the cssOutput in your application

  3. Apply the generated CSS to a div element in your HTML as shown in the code examples above.

Competitor Comparisons

jdan logo

98.css

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A design system for building faithful recreations of old UIs

Pros of 98.css

  • Provides a complete CSS framework for recreating Windows 98-style UIs
  • Includes a wide range of pre-styled components (buttons, form elements, windows)
  • Easier to implement for full application styling

Cons of 98.css

  • Limited to a specific aesthetic (Windows 98), less flexible for modern designs
  • Larger file size due to comprehensive styling
  • May require more effort to customize or override styles

Code Comparison

98.css:

.window {
  background: #c0c0c0;
  border: 1px solid #000000;
  box-shadow: inset -1px -1px #0a0a0a, inset 1px 1px #dfdfdf, inset -2px -2px grey, inset 2px 2px #fff;
}

img2css:

.pixel-art {
  box-shadow: 10px 10px 0 0 rgba(0, 0, 0, 0.1),
              20px 20px 0 0 rgba(0, 0, 0, 0.1),
              30px 30px 0 0 rgba(0, 0, 0, 0.1);
}

Summary

98.css is a comprehensive CSS framework for creating Windows 98-style interfaces, offering pre-styled components and a nostalgic aesthetic. It's ideal for retro-themed projects but may be less suitable for modern designs. img2css, on the other hand, focuses on converting images to CSS, providing a more flexible approach for creating custom pixel art or image-based styles. While 98.css offers a complete styling solution, img2css allows for more creative freedom in generating unique CSS-based visuals.

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purecss-francine

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HTML/CSS drawing in the style of an 18th-century oil painting. Hand-coded entirely in HTML & CSS.

Pros of purecss-francine

  • Creates a highly detailed, artistic portrait using only HTML and CSS
  • Demonstrates advanced CSS techniques and creativity in web design
  • Serves as an impressive showcase of pure CSS capabilities

Cons of purecss-francine

  • Highly specific to one image, not easily adaptable for other inputs
  • Requires significant manual effort and expertise to create
  • Large file size due to complex CSS rules

Code Comparison

purecss-francine:

.hair-shadow {
  width: 100%;
  height: 100%;
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  box-shadow: 0 0 0 9px #2f1d1d;
}

img2css:

function getColorDistance(color1, color2) {
  return Math.sqrt(
    Math.pow(color1.r - color2.r, 2) +
    Math.pow(color1.g - color2.g, 2) +
    Math.pow(color1.b - color2.b, 2)
  );
}

purecss-francine focuses on creating a single, highly detailed image using complex CSS rules, while img2css is a tool that converts any image to CSS pixels, offering more flexibility but less artistic detail. The code snippets highlight the difference in approach: purecss-francine uses intricate CSS styling, while img2css employs JavaScript for color analysis and conversion.

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README

img2css

Convert any image to pure CSS.

img2css

How does it work?

It has two different outputs, pure css shadow matrix [1] and base64 embedded image [2].

  • Pure CSS: This output was created by resizing and setting each pixel as a box-shadow of a single pixel div, so no img tag or background-image is needed. This can result in huge outputs, and the use of this output is not recommended for production unless there is no other option.
  • Base64: The entire image file is embedded inside the <img> tag using base64, so no need external hosting is needed.

Development

Run development server:

npm run dev

Build

npm run build