The Straighten tool is used to correct skewed perspective in any crooked photo.
Straighten a photo
- Select the Straighten tool in the tool strip or press "S".
- Drag in the photo along a line that you want to be horizontal or vertical. Or directly rotate the photo with the "Angle" slider.
- Click "Apply" in the Straighten tool panel or double click on the photo when you’ve finished straightening.