jxl-winthumb

A JPEG XL (*.jxl) thumbnail handler for Windows File Explorer.

Now with WIC decoding support, which means you can use Windows Photo Viewer or any WIC-capable image viewers to view JXL files.

How to install

0. Install Microsoft Visual C++ Redistributable for Visual Studio 2022 if it's not already installed.
1. Download the latest dll file from the releases page.
2. Open a terminal window as administrator
3. Move to your download directory
4. regsvr32 jxl_winthumb.dll, or to uninstall, regsvr32 /u jxl_winthumb.dll.

Build environment

Please read the requirements to build the libjxl dependency, or take a look at the CI configuration.

Helpful resources

• Integration with Windows Photo Gallery and Windows Explorer
• Using Kind Names

Inspired by

• Intercom thumbnail provider example
• FlifWICCodec
• flif_windows_plugin
• jpegxl-wic