1. This PowerPoint template is set to size for Facebook Newsfeed Image 104 x 125mm (472 x 394 pixels). It’s part of Elan Communications blog: ‘Make your business look more professional – five things to check and do.’
1. Design your image on a new slide
2. Export slide as jpeg
Click File > Change File Type > JPEG file
Save the file – you can choose which slide you want to save

2. To change size slide to create other templates:
Select the Design tab
Select Custom Slide Size - change to desired size
Make sure you save under different names first!
Common other sizes
Facebook page banner: 225mm x 83mm
Facebook profile picture: mm (or just design something square, it will resize)