How File Uploads Work in Web Apps, with React and Express
· 13 min read
I recently needed to handle file uploads at work, so I took the opportunity to learn how the process works on both sides of a web application. To make things concrete, this post uses a simple example: users can upload one image at a time, in any image format, and the server saves it in a specific folder. Users can drag a file onto the page or click to open the system file picker and choose one.