README.md

📚 MCoder 📚

There is mini-codecs collections...

Image Decoders

📷 JNG (JPEG Network Graphics) 📷

Based on pure JavaScript, uses native browser-decoders.

About

• En Wiki
• Ru Wiki
• Specification
• JNGSuite

Features

• Color and gamma correction
• Using OffscreenCanvas
• Alpha channel support
• No plugins required
• Uses browser-native PNG and JPEG
• Support HTML5 Canvas HDR

API?

import { JNG } from "/coder/index.mjs";
const $img = document.querySelector("#jng");
$img.src = URL.createObjectURL(await (new JNG().load($img.src).asPNG()));

📷 JXL (JPEG XL) 📷

Based on WebAssembly compilation.

About

• En Wiki
• Ru Wiki
• Webpage
• Community

Features

• Conversion to PNG 16-bit directly
• Using WebAssembly and Emscripten
• Import ICC profile to PNG format
• Animation support

API?

import {loadJXL} from "/coder/index.mjs";
const $img = document.querySelector("#jxl");
$img.src = URL.createObjectURL(new Blob([await loadJXL($img.src)], {type: 'image/png'}));