how to rotate photo files

[bukzin]

I am looking for ideas (or an app) for rotating a quantity of photos on my
iphone 6.

I know how to do them one at a time but was looking for a 'all at once' option.

If I can't do that directly on the phone is there a why to do the same
on my Windows 7 desktop machine?

Thx!

 

[sarahgad]

So far there is no relevant result on this. Sadly, you will have to do each picture individually.
On desktop machine you can select all pictures with pressing CTRL and after you have selected right click to rotate. All the images will rotate in one go.