Do you have sample code for uploading and transforming images using Node.js?

You can find sample projects that demonstrate common Cloudinary use cases in Node.js here:

https://github.com/cloudinary/cloudinary_npm/tree/master/samples

Included are two sample projects:

Basic:

This sample project uploads local and remote images to Cloudinary and generates URLs for applying various image transformations on the uploaded files.

Photo Album:

A fully-working web application that allows you to uploads photos, maintain a database with references to them, list them with their metadata, and display them using various cloud-based transformations. Image uploading is performed both from the server side and directly from the browser using a jQuery plugin.