Showcase slides are available in the three most popular aspect ratios: 4:3, 16:9, and 3:2

This means your designs will look great across a number of devices without needing to be amended for each one.

When you create slides for a new showcase, you want to pick the aspect ratio that you think will be in the hands of most of your users. These users will have a pixel-perfect fit with your showcase designs taking up their entire screen.

If a user views your showcase on a device with a different aspect ratio, they’ll still have a pixel-perfect experience (as in, it won’t stretch or distort) but they’ll have some black space around the edges. This is called 'letterboxing' if you're up with the lingo. 

  • If you've got a lot of iPad users, start with our 4:3 template and design your slides at 2048 x 1536 pixels.
  • If your users are mostly going to use Showcase on popular Android devices, iPhones, via our Chrome app, or on early Windows devices, use our 16:9 template and design your slides at 2048 x 1152 pixels.
  • If your users are a fan of late-model Windows devices like the Surface Pro 3, use our 3:2 template and design your slides at 2048 x 1365 pixels.

PPI

If you're used to designing for print, you might be wondering what resolution — or DPI — you should be using in your designs. The nice news is that when designing for showcase slides, the resolution doesn't matter nearly as much as the pixel dimensions above. Make sure you're using the minimum resolution of 72ppi for any PNGs you export, and you should be golden.
 
If your images are coming up large and you want to save some space, we recommend compressing the images with ImageOptim.
 
If size is still a concern, you could always make a non-HD version of your showcase. You can find the HD checkbox when you create a new showcase.