Slide Backgrounds

Unsplash

Unsplash is a great website to look for images to use for a slide background.
Unsplash's License clearly states that all their photos are free to download and use for commercial and non-commercial purposes. Although they appreciate credit, it is not required.

I edited several Unsplash photos to be used for slide backgrounds over in my Talk repo:

github.com/ahandsel/Talks - ./public/background

Highly recommend building out a file to give credit to the creators!
Good thing to do & keeps you from using photos you do not know where you got it from.

Here is mine: Talks/Credits.md

Editing Photos with TouchRetouch

TouchRetouch is a super easy to use photo editing app that works like magic!