How to set file upload size limit in Supabase?

 

Step 1: Understand Supabase Storage Limits

 

Supabase doesn't have a built-in mechanism to directly set file upload size limits at the storage level. Instead, limiting file upload size typically needs to be handled client-side or by configuring a backend server. However, you can work with certain parameters to ensure it doesn't exceed your preferred size.

 

Step 2: Implement Client-Side Validation

 

To set a file size limit from the client side, you can enforce a size check before the upload process. Here's an example using JavaScript:

const maxSize = 5 _ 1024 _ 1024; // 5 MB

document.getElementById('fileInput').addEventListener('change', function(event) {
    const file = event.target.files[0];
    
    if (file.size > maxSize) {
        alert('File is too large!');
    } else {
        // Proceed with Supabase upload here
    }
});

 

Step 3: Configure Server-Side Validation

 

If you have a backend server, you can also set up an API that enforces upload size limits before continuing to Supabase. Here's a simple example using Node.js with Express:

const express = require('express');
const app = express();

const maxSize = 5 _ 1024 _ 1024; // 5 MB

app.post('/upload', (req, res) => {
    const file = req.files.file; // Assume using express-fileupload middleware

    if (file.size > maxSize) {
        return res.status(400).send('File is too large!');
    }
    
    // Continue to upload to Supabase Storage here
});

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

 

Step 4: Utilize Supabase Hooks (Optional)

 

For more control over the upload process, you might explore Supabase Functions (Edge Functions) or Hooks to handle files after they are uploaded. This isn't directly limiting the size but could provide additional handling like size verifications.

 

Step 5: Additional Considerations

 

• Ensure to communicate file size requirements to users in your frontend UI to enhance user experience.
• Regularly check for updates from Supabase as platform capabilities may enhance, potentially integrating upload size configurations directly in future releases.

By following these steps, you can effectively implement file size limits in a Supabase project by controlling it from the client or server side.