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How to Build a File Upload System with Supabase Storage

sowad sheikh·Published ·Updated ·1 min read

A simple image uploader is easy. A production file system requires a little more planning.

Decide What Users Can Upload

First define the allowed file types. For example:

Images PDFs Documents Videos

Don't allow every file type without a reason.

Validate the File

Before uploading, check: File extension MIME type File size User permissions Create a Unique Path

Avoid storing every user's files under the same predictable filename. A user-specific folder and unique filename can make organization easier.

Upload to Storage

Send the file to your Supabase Storage bucket.

Save Metadata

Create a database record containing useful information such as: User ID File path Original filename File size Upload date Control Access Use Storage policies to decide which users can upload, read, update, or delete files.

Add Delete Functionality

A good file management system should also allow users to remove files they no longer need. With these pieces together, Supabase Storage can become the file layer for your application.