JXL.js as a Chrome extension

This is an experimental extension that converts any JXL (JPEG XL) image file in the page to WEBP.

It uses the following code for conversion:

• https://github.com/niutech/jxl.js

You can find my fork here:

• https://bit.ly/jxl-as-Chrome-extension

Limitations:

• Conversion may take a couple of seconds, especially for large images.
• No support for animated JXL files. Only the first frame is rendered.
• May cause some pages to not load at all. If this happens, please uninstall the extension.

This is a work in progress. I'll add more explanation on use cases, tips, and workarounds here as I encounter them.