BUG: JXL exports files much larger than JPG

[pfalkingham]

What happened?

[Firstly, thank you so much for adding JXL export support]

When exporting images, an 80% quality JXL is significantly larger than an 80% JPEG.

Example test case:

JPG export: 2.78MB, JXL export: 6.07MB

(these numbers are accurate to actual files)

What did you expect to happen?

JXL should be significantly smaller than JPG. If I use imageMagick to convert an original file to JXL at quality 80 filesize is 3.5MB (which is still higher than the jpg above, which is odd, but it is nearly half the size of the jxl from RapidRaw)

How can we reproduce this?

Go to save/export
Select jxl
Set quality to 80
Export.

Operating System

Windows 11

RapidRAW Version

1.52

Additional information

No response

Acknowledgement

• I have verified that my camera and lenses are supported by the external libraries listed above, or my issue is unrelated to camera/lens support.
• I have searched all existing issues, both open and closed, and did not find a duplicate.

[R-Laine]

jxl is meant to be more efficient so a larger file size than jpg makes no sense whatsoever