# Supabase Storage vs Vercel Blob for Next.js

Both are storage batteries. A repo takes one of them, not both.

| | Supabase Storage | Vercel Blob |
| --- | --- | --- |
| What it is | Object storage on the Supabase project you already have. A migration creates a private bucket with row level security policies. Signed upload URLs are issued only after an authorisation check. You also get signed downloads, on-the-fly image transformation and a token-only dropzone that uploads straight to storage. | Object storage on the platform you already deploy to, in a private Blob store. Client uploads go straight from the browser to Blob after an authorisation check. Each client token is locked to one pathname, one content type and one size. Downloads use short-lived signed URLs, and the dropzone has progress and cancel. |
| Pricing | Part of your Supabase plan. Free: 1 GB stored and 5 GB egress. Pro: 100 GB stored, then $0.0213/GB, and 250 GB egress, then $0.09/GB ($0.03/GB for cached egress). Image transformations need Pro: 100 origin images included, then $5 per 1,000. | Hobby: free up to 1 GB stored, 10,000 simple and 2,000 advanced operations, and 10 GB of transfer a month. Past the limit, Blob stops until the 30 days reset. Pro bills by usage. Prices below are for iad1. Storage is $0.023 per GB-month and transfer $0.05 per GB. Simple operations (cache-miss reads) are $0.40 per million. Advanced operations (put, copy, list) are $5 per million. Deletes are free. Client uploads have no transfer charge. |
| Best for | Teams already on Supabase who want files under the same policies as their rows. Same migrations, same pull request. Strongest for private per-user files (avatars, invoices, imports) where "the owner and nobody else" is the whole access model. | Apps already on Vercel that want user uploads (avatars, attachments, imports) without adding a cloud account, IAM, CORS rules or a second bill. Strongest when files are small to medium and read by their owner. |

- [Build with Supabase Storage](https://agenticboilerplate.com/build?b=supabase-storage)
- [Build with Vercel Blob](https://agenticboilerplate.com/build?b=vercel-blob)

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