XnView Software

Hello,
I would like to batch processes. E.g. rotating all open frames - without saving them before.
Is there any possibiliy to do that ?

Thanks for help.
Christiane

XnView supports batch processing, see FAQ How to Batch convert several images at once.

Batch processing can be applied on the images selected in the XnView browser, but currently it's not possible to apply it to all opened images.