/jxl.js

JPEG XL decoder in JavaScript using WebAssembly (WASM)

Primary LanguageJavaScriptApache License 2.0Apache-2.0

JXL.js

This is a JPEG XL decoder in JavaScript using WebAssembly implementation from the Squoosh app running in Web Worker.

Usage

Just insert your JPEG XL images to your HTML document as usual: <img src="image.jxl" alt="..." width="..." height="..."> and append the minified JXL.js script to the <head> of your web page:

<script src="jxl.min.js"></script>

JXL.js uses Mutation Observer to watch for <img> tags being added to the DOM as well as CSS background images and it decodes them as they appear using WebAssembly decoder in Web Worker. JXL.js leverages Cache API for faster subsequent page views, optionally compressed by SnappyJS.

See the demo

To do

  • <picture> HTML element
  • performance improvements

License

© 2022 Jerzy Głowacki and Squoosh Developers under Apache 2.0 License.