I have important photos that are rotated 90 or 180, I've taken them with my Android phone. Fortunately, once uploaded to google photos, it's easy to rotate them by selecting them each and pressing shift-right, I answered a question in fact about how do it. Now, the problem is, I don't want to make a lossy conversion that reduces the quality. Can you point me to a resource or location, such as google post forum or something that says if the rotation is lossless? I need to know exactly if the quality will be worst.
How much quality is lost when rotating photos 90 in Google Photos interface?
google photos