What is Supabase?

Supabase is a backend platform built on PostgreSQL. It adds authentication, file storage, realtime updates, and auto-generated APIs.

Backend platform. Updated November 12, 2026 by DATAL Projects

Made by: Supabase Inc.
First released: 2020
License: Open source, mainly Apache 2.0
Type: Backend platform built on PostgreSQL
Runs on: Hosted cloud, or self-hosted with Docker
Official site: supabase.com

What Supabase is

Supabase is a backend platform built on PostgreSQL. It adds authentication, file storage, realtime updates, and auto-generated APIs. It provides a full backend without running your own servers, and the data stays in a standard PostgreSQL database.

Supabase was founded in 2020 by Paul Copplestone and Ant Wilson. They presented it as an open source alternative to Firebase, the backend service owned by Google. Instead of writing a new database, they chose to build on PostgreSQL and combine existing open source tools around it.

The platform started with a hosted database, sign-in and automatic APIs, then added file storage, Edge Functions and vector search for AI features. It moved out of beta to general availability in 2024. The code is developed in the open on GitHub.

How Supabase works

Every Supabase project is a full PostgreSQL database with a set of services placed around it. You create tables in a dashboard or with SQL, and Supabase turns them into a REST API automatically using a tool called PostgREST. Your website or mobile app talks to that API through a client library such as supabase-js.

Because the browser can talk to the database API directly, security is handled inside the database with Row Level Security, often shortened to RLS. You write policies that say which rows a signed-in user may read or change. The Auth service handles sign-up, login, social sign-in and issues a token that those policies can check.

Other parts cover common backend needs. Storage keeps files such as images in buckets, Realtime sends live updates over WebSockets when data changes, and Edge Functions run your own server code close to users. You can use all of them or only the database.

Key features of Supabase

Postgres database
Each project gets a real PostgreSQL database with full SQL access. You can use extensions, views, functions and standard database tools.
Authentication
Built-in sign-up and login with email, magic links, phone and social providers such as Google and GitHub. Users are stored in your own database.
Auto-generated APIs
Tables are exposed as REST endpoints as soon as you create them. Client libraries exist for JavaScript and several other languages.
Row Level Security
Access rules live in the database as policies. This lets a frontend query data safely without a custom server in between.
File storage
Buckets hold images, videos and documents, with the same policy system controlling who can read or upload.
Realtime and functions
Realtime pushes database changes to connected clients. Edge Functions run custom TypeScript code for tasks such as webhooks or payments.

When to use Supabase

A good choice for

Getting a new app or MVP online quickly with login and a database
Small teams without a dedicated backend developer
Apps built with Next.js, React, Flutter or mobile frameworks
Projects that want a managed backend but standard SQL data
Live features such as chat, presence or dashboards

Pick something else when

Teams that need a non-relational or document-first data model
Complex backend logic that is easier to keep in a dedicated server
Organizations that must run everything on their own hardware and lack the staff to self-host it
Developers who are not ready to learn Row Level Security, since mistakes there can expose data

Supabase compared with alternatives

Supabase vs Firebase

Firebase is a backend platform from Google with a similar set of services. Its main database, Firestore, is a NoSQL document store, while Supabase uses relational PostgreSQL with SQL. Supabase is open source and can be self-hosted, and Firebase is tied to Google Cloud.

Supabase vs Plain PostgreSQL

You can run PostgreSQL yourself and build sign-in, APIs and file storage by hand. That gives full control but takes more time. Supabase gives you the same database with those parts ready to use.

Supabase vs A custom Node.js backend

Writing your own server in Node.js lets you shape every endpoint and rule exactly as you want. Supabase removes most of that work for standard features. Many projects use both, with Supabase for data and login and a small server for special logic.

How to start learning Supabase

01Create a free project at supabase.com and explore the dashboard.
02Use the Table Editor or SQL Editor to make a table and add a few rows.
03Read the Row Level Security guide in the official Supabase docs and add a policy to your table.
04Install the client with npm install @supabase/supabase-js and fetch your rows from a small web page.
05Build a first project such as a to-do app with email login, where each user sees only their own items.

What Supabase costs

Supabase has a free plan that is suitable for learning and small projects, with limits on usage. Paid plans add more resources, backups and support for production apps. Check the official pricing page for current plans, or self-host the open source version on your own servers.

How DATAL Projects uses Supabase

Supabase is part of our backend development work in the Philippines. Common uses:

User sign-in and accounts
File and image storage
Realtime dashboards

Common questions about Supabase

What is Supabase used for?

Supabase is used as the backend for web and mobile apps. It provides the database, user login, file storage and APIs so developers can focus on the app itself.

Is Supabase free?

There is a free plan with usage limits, which is enough to learn and to run small projects. Larger or busier apps need a paid plan, so check the official pricing page.

Supabase vs Firebase: which should I use?

Choose Supabase if you want a SQL database, open source code and the option to move your data to any PostgreSQL host. Choose Firebase if you prefer a document database and already rely on Google services.

Is Supabase a database?

Supabase is a platform built around a database. The database itself is PostgreSQL, and Supabase adds authentication, storage, realtime updates and APIs on top.

Is Supabase hard to learn?

The dashboard and client libraries are friendly to beginners. The parts that take real study are SQL and Row Level Security, which you need to understand before going live.

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