[I updated this after reading Joe's response in another forum re: the potential image quality loss issue]
I don't get it Joe, you said that 'you don't have to load pictures to any app' then you go on and say you need to open them with Windows Office Picture Manager (WOPM) then manipulate it inside that app. Also, I doubt many people with have that app. And, I am still concerned that as with other windows rotation tool, it will do the job but with a loss of picture quality. With JPEG Lossless Rotater (JLR):
- you don't have to first run JPEG Lossless Rotator - it's built into the Windows Shell
- you navigate to the picture directory with Windows Explorer just as you are proposing with WOPM but then you DON'T have to open them, you just right click on them to rotate - much simpler than your approach; and
- you don't lose any picture quality.
Based on how I understand your approach, my suggestion is easier, can be donw with one or dozens of photos at the same time, takes less steps and doesn't result in image quality loss.
The only benefit to your approach seems to be if you already have WOPM then you won't need to download the free JLR. But even if I had WOPM I'd still prefer my method since its easier.