How to Upload Download Files in Node.js Using Express, Multer and MongoDB
Handling file uploads is a core requirement for many web applications—whether you are building an e-commerce store for product images, a profile picture uploader, or an inventory management system. In this tutorial, we will walk through how to build a complete file upload pipeline from scratch using Node.js, Express, Multer (for handling multipart form data), EJS (for server-side rendering), and Mongoose (to store file paths and metadata in MongoDB). Prerequisites & Tech Stack Make sure you have Node.js and MongoDB installed on your system. We will use the following packages: Express: Fast web framework for handling server routes and requests. EJS: Template engine used to render dynamic HTML views. Body-Parser: Middleware to parse incoming form request bodies. Multer: Middleware specifically designed for handling multipart/form-data file uploads. Mongoose: Object Data Modeling (ODM) library to connect and interact with MongoDB. Step 1: Setup Your Project Directory Open...