---
title: Amazon S3
description: AWS S3 (and any S3-compatible bucket). Uses the standard AWS credential chain - environment, IAM role, shared profile.
---

## Installation

`@aws-sdk/client-s3`, `@aws-sdk/s3-presigned-post`, and `@aws-sdk/s3-request-presigner` are optional peer dependencies of `files-sdk` - install alongside the SDK so the adapter's imports resolve at runtime.

```package-install
files-sdk @aws-sdk/client-s3 @aws-sdk/s3-presigned-post @aws-sdk/s3-request-presigner
```

To report true byte-level [upload progress](/docs/api/upload#progress-tracking) via `upload`'s `onProgress` option, also install `@aws-sdk/lib-storage` — it's optional and only loaded when `onProgress` is used.

## Usage

```ts lineNumbers
import { Files } from "files-sdk";
import { s3 } from "files-sdk/s3";

const files = new Files({
  adapter: s3({
    bucket: "uploads",
    region: "us-east-1",
    // credentials auto-loaded from the AWS chain
    // (env vars, IAM role, shared profile, ...)
  }),
});
```

## Options

<AutoTypeTable
  path="../../packages/files-sdk/src/s3/index.ts"
  name="S3AdapterOptions"
/>

## Compatibility

| Method | Status | Notes |
| --- | :-: | --- |
| `upload` | ✅ |  |
| `download` | ✅ |  |
| `delete` | ✅ |  |
| `list` | ⚠️ | The S3 list API returns no per-object `Content-Type`, so `type` is inferred from the key's extension (`application/octet-stream` when unknown). Use `head()` for the stored value. |
| `search` | ✅ |  |
| `head` | ✅ |  |
| `exists` | ✅ |  |
| `copy` | ✅ |  |
| `url` | ✅ |  |
| `signedUploadUrl` | ✅ |  |