Lovable·Fixdatabaseintermediate

File Upload Not Working in Lovable

Quick Answer

How do I fix File Upload Not Working in Lovable?

File uploads need Supabase Storage configured with proper bucket policies. Lovable may generate a UI without connecting it to storage. Start with "Connect to Supabase Storage" before making broader code changes.

Fix signals

What this answers: Why file upload not working in lovable happens and what to change first.
Fastest move: Connect to Supabase Storage
Use this page if: Upload button does nothing

If this keeps happening

Open the next decision, not just the patch

Use these when the current fix is helpful, but the real answer is a better tool choice, a cleaner workflow layer, or a more trustworthy launch path.

Lovable reviews

Open this when the same full-stack MVP failures keep repeating and you need a harder answer on whether Lovable is still the right bet.

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Cursor review

Open this when the pattern behind the bug is really about generated speed versus owning more of the stack in code.

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Deploy hub

Open this when the fix is exposing a bigger production handoff problem, not just one broken feature.

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Tool picker

Open this when the repeated bug is making you question the whole stack choice instead of the latest patch.

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Firecrawl review

Open this when the app also needs live web data and the next stack decision is no longer only about the builder itself.

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Quick Fix Summary

Most likely cause	File uploads need Supabase Storage configured with proper bucket policies. Lovable may generate a UI without connecting it to storage.
Fastest fix	Connect to Supabase Storage
Use this page if	Upload button does nothing

You're in the right place if...

!Upload button does nothing
!File upload errors after selection
!Files disappear after upload

Why this happens

File uploads need Supabase Storage configured with proper bucket policies. Lovable may generate a UI without connecting it to storage.

Fix

Connect to Supabase Storage

Tell Lovable to set up file uploads properly:

Copy this prompt

File upload is not working. Please:
1. Connect file uploads to Supabase Storage
2. Create an 'uploads' bucket in Supabase Storage
3. Add proper file size validation (max 10MB)
4. Show upload progress to the user
5. Store the file URL in the database after successful upload

Prevent this next time

When your founding prompt includes file uploads, specify: 'use Supabase Storage for file uploads with a 10MB size limit and upload progress indicator.'