Questions about the Opus internal viewer

[Leo]

Your rotate buttons add/subtract 90 degrees from whatever the current rotation is, so they will never appear highlighted in an "on" state.

Have a look in the viewer's menus for rotation commands that rotate the image to a specific orientation. Those will highlight when the image is in that orientation.

Re saving after flip/rotation, see here:

Picture Viewer can only Save as

Rotation in the viewer is considered a cosmetic change, not one that can be saved, similar to how resizing an image in the viewer doesn't offer to save the result, as it's just changing how it's displayed. But you can make a menu item or toolbar but…

And here:

Rotate & Save Image In One Click

If you want to rotate a file from the file display (e.g. via the right-click menu, or a lister toolbar or lister hotkey), use this as the command: Image ROTATE=90 HERE REPLACE QUALITY=75 If you want to rotate the file in the image viewer (i.e. rota…