Ultimate Guide to File Uploads in Next.js

Uploading files may seem simple but they come with a lot of complexity. Uploading through a Next.js server won't work because of the 1MB body size limit. Uploading directly from the client is insecure. The correct approach is using presigned URLs. In this video I show you how to generate presigned URLs using S3 and how to use them to upload files securely. We start by building a fully custom and accessible drag and drop zone. Then we implement file uploads using S3 and presigned URLs. I also show you how to track upload progress using native XHR. At the end we implement file deletion as well. This video is a complete guide to building a secure and user-friendly file upload flow in Next.js using S3 and presigned URLs.