Google Photos just introduced a new smart feature which allows you to edit your photos without the risk of destroying the originals. 
In the past, before each processing, it was necessary to create a backup copy, to avoid unpleasant situations. Google Photos starting today offers one button called “Undo Changes.” The new button removes any changes you made to the photo.
Editing images will automatically save one copy of the original within the photo itself, making it possible to restore any changes.
To use the new feature, simply click the menu button in the upper right corner and click "Undo Edits."
You can download the new one application by Google Play Store.
At this time, the feature is available exclusively for Android users. Google has not confirmed that we will see the feature in iOS, but do not be surprised to hear it later.
