Rails, Dropzone.js, Amazon S3 and imgix

1 · Ryan Bigg · Aug. 27, 2017, 2 p.m.
In this tutorial I'll cover how you can upload files directly to S3 by using a feature called PresignedPost. I'll then show how you can use imgix to resize these images dynamically after they've been uploaded. The Rails app that I use for this tutorial is dropzone-example, with the finished branch being the final version of the code from this tutorial. Background I've got a small hobby Rails app that I use to share photos with my extended family. This app had humble beginnings: it was a very lig...