Preview makes it easy to view your designs right on a Pebble Time or Pebble Time Round. Just upload an image to a local or remote server, specify the URL to the image in Settings, and press the Select button on your Pebble to refresh and see your updated design.

Some things to note:

– Size designs to the appropriate dimension 
– Optimize colors to match what Pebble supports
– Press Select to refresh the preview

This app was built as a proof-of-concept at the 2015 Pebble Developer Retreat, and is very much a beta.