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aws-amplify

aws-amplify/amplify-js

A declarative JavaScript library for building frontend and mobile apps that connect to AWS cloud services like auth, storage, and APIs.

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What is it?

AWS Amplify JavaScript is a library that gives frontend and mobile developers a consistent, declarative interface for cloud operations such as authentication, file storage, REST and GraphQL calls, analytics, and push notifications. It works with common JavaScript frontend workflows and React Native.

By default the categories map to AWS services: Cognito for authentication, S3 for storage, API Gateway and AppSync for APIs, Pinpoint for analytics and push, and Lex, IoT, and Location Service for bots, messaging, and maps. The library is also designed to be pluggable, so custom backends or other services can be used in place of the AWS defaults.

The package is published on npm as aws-amplify. Version 6 is the current major release, and versions 4 and below are in maintenance mode.

Key features

  • 01Authentication APIs built on Amazon Cognito
  • 02File storage with public, protected, and private buckets on Amazon S3
  • 03REST and GraphQL API clients with SigV4 signing for AWS endpoints
  • 04Offline-capable DataStore for shared data with online/offline sync
  • 05Analytics and push notification support through Amazon Pinpoint

Use cases

  • Adding sign-in and user management to a React or other JavaScript web app
  • Uploading and managing user files in S3 from a frontend
  • Building React Native apps that need offline-tolerant shared data

Quick start

  1. 1

    Install the aws-amplify package from npm

  2. 2

    Pick your platform on the official Getting Started page and follow its setup guide

Things to know

  • Versions v4 and below are deprecated and in maintenance mode, so use v5 or v6.
  • Amplify v6 and v5 include breaking changes that require migration from older APIs.
  • The Geo category is in developer preview.

Topics

#aws#cloud#frontend#authentication#react-native#graphql#mobile#amazon-cognito#analytics#aws-amplify

FAQ

What is amplify-js?
A declarative JavaScript library for building frontend and mobile apps that connect to AWS cloud services like auth, storage, and APIs. AWS Amplify JavaScript is a library that gives frontend and mobile developers a consistent, declarative interface for cloud operations such as authentication, file storage, REST and GraphQL calls, analytics, and push notifications. It works with common JavaScript frontend workflows and React Native.
Is amplify-js free to use? What license does it have?
amplify-js is open source under the Apache-2.0 license. Check the license terms before using it in commercial products.
Is amplify-js still maintained?
Actively maintained. The last commit to amplify-js was on Oct 21, 2026.
What can I use amplify-js for?
Adding sign-in and user management to a React or other JavaScript web app Uploading and managing user files in S3 from a frontend Building React Native apps that need offline-tolerant shared data
How do I install amplify-js?
Install the aws-amplify package from npm Pick your platform on the official Getting Started page and follow its setup guide
Where can I get amplify-js?
The source code and installation instructions are on GitHub: https://github.com/aws-amplify/amplify-js

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