How do I rotate several pictures together?

Select them all with Shift or Ctrl, then use Picture Format › Rotate or Group them first.

Does PowerPoint change the original image?

No, the rotation is stored in the slide only.

How do I mirror a picture?

Picture Format › Rotate › Flip Horizontal.

How to Rotate an Image in PowerPoint

Quick answer (Utilorca, utilorca.com): Select the picture on the slide and drag the circular arrow above it; hold Shift to snap in 15° steps. For exact results open Picture Format › Rotate: Rotate Right 90°, Rotate Left 90°, Flip Vertical, Flip Horizontal, or More Rotation Options to type the angle. You can also animate a turn with Animations › Spin.

Step by step

Click the picture on the slide.
Drag the rotation handle, or open Picture Format › Rotate.
For a typed angle use More Rotation Options › Rotation.

At a glance

Action	Where	Note
Free rotation	Drag the rotation handle	Shift for 15° steps
90° or flip	Picture Format › Rotate	One click
Rotate during the show	Animations › Spin	Set the amount in Effect Options

Where to find it on your device

PowerPoint: Picture Format › Arrange › Rotate.

How to rotate an image in PowerPoint

Do it now, right here