How do I resize my images to fit SlideRoom's restrictions?
On a Windows computer, there is an open source program you can download called Image Resizer. It will allow you to right click on any image and define a new image size. A safe guideline is to make the largest dimension 1024 px.
You can download it here.
On a Mac, you can use Preview. Open the image in Preview, then go to Tools > Adjust image size. Within this window, you can enter a new size in terms of pixels. 1024 x 1024 px @ 72 ppi is a good standard to use for browser-based viewing. Please note that these dimensions are just a general guideline. Your image size does NOT need to match exactly.