All official SDK quick starts in one place. Compiled March 2026 from github.com/filestack.

Join the community on Discord

Filestack is a file upload and content management API that powers file handling for thousands of applications. The File Uploader (also called the Picker) is an embeddable widget that lets users upload from their device, cloud drives (Google Drive, Dropbox, Box, OneDrive, and more), or via URL - with no backend infrastructure required.

Get your free API key: Sign Up for free

1. JavaScript
2. React
3. Angular
4. Python
5. PHP
6. Ruby
7. Ruby on Rails
8. Java
9. Android
10. iOS
11. Swift SDK
12. Go
13. Next Steps & Resources

GitHub: filestack/filestack-js Full guide: docs/javascript.md Examples: examples/javascript/

The core JavaScript SDK supports both browser and Node.js environments. It powers the Filestack Picker widget and the full processing/upload API.

npm install filestack-js

Quickest start - CDN (no build step):

<script src="//static.filestackapi.com/filestack-js/4.x.x/filestack.min.js"></script>
<button id="picker">Upload File</button>
<script>
  const client = filestack.init("YOUR_API_KEY");
  client.picker({ onUploadDone: (res) => console.log(res) }).open();
  document.getElementById("picker").addEventListener("click", () => picker.open());
</script>

See full guide

GitHub: filestack/filestack-react Full guide: docs/react.md Examples: examples/react/

A wrapper around filestack-js with ready-to-use React components: PickerOverlay, PickerInline, and PickerDropPane.

npm install filestack-react filestack-js

import { PickerOverlay } from "filestack-react";

function App() {
  return (
    <PickerOverlay
      apikey="YOUR_API_KEY"
      onUploadDone={(res) => console.log("Uploaded:", res.filesUploaded[0].url)}
    />
  );
}

See full guide

GitHub: filestack/filestack-angular Full guide: docs/angular.md Examples: examples/angular/

Official Angular library wrapping filestack-js with picker components and a FilestackService for Observables.

npm i @filestack/angular filestack-js

See full guide

GitHub: filestack/filestack-python Full guide: docs/python.md Examples: examples/python/

Server-side SDK with Client for uploading and Filelink for managing already-uploaded files.

pip install filestack-python

from filestack import Client

client = Client("YOUR_API_KEY")
filelink = client.upload(filepath="path/to/file")
print(filelink.url)

See full guide

GitHub: filestack/filestack-php Full guide: docs/php.md Examples: examples/php/

FilestackClient for uploads and Filelink for transformations and file management.

composer require filestack/filestack-php

See full guide

GitHub: filestack/filestack-ruby Full guide: docs/ruby.md Examples: examples/ruby/

Server-side uploads, transformations, and file management for Ruby apps.

gem install filestack

See full guide

GitHub: filestack/filestack-rails Full guide: docs/ruby-on-rails.md

Rails plugin that injects the Filestack Picker into views via form helpers and layout tags.

# Gemfile
gem 'filestack-rails'

See full guide

GitHub: filestack/filestack-java Full guide: docs/java.md Examples: examples/java/

Upload, transformation, cloud, and file management APIs. Also the underlying engine for the Android SDK.

// build.gradle
implementation 'org.filestack:filestack-java:1.0.1'

See full guide

GitHub: filestack/filestack-android Full guide: docs/android.md Examples: examples/android/

Full-featured picker UI (FsActivity) supporting local files, camera, and 10+ cloud sources.

// app/build.gradle
implementation 'com.filestack:filestack-android:6.0.0'

See full guide

GitHub: filestack/filestack-ios Full guide: docs/ios.md Examples: examples/ios/

Full Filestack Picker UI and programmatic upload for Swift and Objective-C. Requires Xcode 11+, Swift 4.2+, iOS 14+.

# Podfile
pod 'Filestack', '~> 3.0.1'

See full guide

GitHub: filestack/filestack-swift Full guide: docs/swift.md Examples: examples/swift/

Lower-level Swift SDK (FilestackSDK) for programmatic uploads without the picker UI. Use this to build a fully custom upload UI.

# Podfile
pod 'FilestackSDK', '~> 3.0.0'

See full guide

GitHub: filestack/filestack-go Full guide: docs/go.md Examples: examples/go/

Official Go SDK for file uploads, transformations, and file link operations.

go get github.com/filestack/filestack-go

See full guide

Once you've uploaded your first file, explore these Filestack capabilities:

Compiled March 2026 from official Filestack SDK repositories.