How to Upload Download Files in Node.js Using Express, Multer and MongoDB
In this tutorial, we will build a complete file upload pipeline using Node.js , Express , Multer (for handling multipart/form-data ), EJS (for server-side rendering), and Mongoose (to store file metadata in MongoDB). To learn more about how middleware works under the hood, you can explore the official Multer documentation . Step 1: Setup Your Project Directory create a new folder using console/terminal. open console/terminal type mkdir followed by the folder name you want to give. change to that folder by typing cd folder name. Step 2: Initialize package.json You can initialize your project automatically using npm, or create the configuration file manually: Automated Setup: Run npm init in your terminal and follow the prompts. Manual Setup: Alternatively, create a file named package.json in your root directory and structure it manually with your project dependencies and entry point. Your package.json will look similar to this once configu...