The before and after image effect is a great way to quickly contrast two images. While this effect is most often created in Flash, you can create a similar effect using PowerPoint and Articulate’s seekbar.

• Preview the final effect
• Download the source file

Step 01: Set up your images

The effect works by animating one image over another. Open PowerPoint and insert two images on your slide. The images should be the same size. The top image is the image that animates over the bottom image.

Step 02: Apply the wipe animation

Let’s add the animation effect. Select the top image and go to Animation > Wipe and set the direction to From Left. Now, you’ll need to modify the animation timing to get the smooth, sliding effect. I find 30 seconds worsk well. With your top image selected, go to Animations > Timing and enter 30.00 in the Duration field. And finally, set the animation Start event to With Previous.

Step 03: Preview the effect

That’s all there is to it. Click Preview or Publish to review your effect. Modify the timing to change the sliding effect. You