[Digikam-users] How to crop a jpg lossless?

[Andreas Borutta]

Gerhard Kulzer schrieb:

> Lossless cropping is not possible unless you crop to exactly 1/4 size or 1/16 and so on. This is a limitation of the underlying jpeg compression algo. 

Yes, I know.

> Only lossless rotation is possible.

Before I migrated to Linux I used the Windows application JPEGCrops
http://ekot.dk/programmer/JPEGCrops/
for lossless cropping.
It is based on jpegtran.