Supabase Storage

S3-compatible object storage for files, media, analytics data, and vector embeddings. Stores metadata in Postgres and enforces access control through row-level security policies, so permissions flow directly from your database schema.

Part of the Supabase platform, trusted by startups and teams such as Chatbase. Differentiates from standalone S3 alternatives by unifying storage with Auth and Postgres: a thin API layer leverages Postgres for permissions and performance, and policies can combine SQL, Postgres functions, and custom metadata.

Key capabilities:

• S3-compatible API plus REST API and TUS resumable uploads
• Three bucket types: Files for general assets, Analytics for Apache Iceberg data lakes, Vector for embeddings and similarity search
• Global CDN delivery from over 285 edge locations
• On-the-fly image resizing, compression, and transformations
• Row-level security and custom policies for fine-grained access control

Teams use it for user-generated content, media libraries, avatars, and document storage. Analytics buckets fit time-series data, logs, and ETL outputs queryable via Postgres foreign tables. Vector buckets support RAG systems, semantic search, and AI-powered applications. Integrates with Supabase Auth and works with the JavaScript client library for straightforward frontend and backend usage.