Glow Web App

A PWA app showing how to implement Breez SDK with WebAssembly.

See it in action here.

Overview

Built with React, this demo app showcases best practices for integrating Lightning in a web environment using the Breez SDK’s WebAssembly bindings. It enables users to:

• Send payments via various protocols such as: Lightning address, LNURL-Pay, Bolt11, BTC address, Spark address
• Receive payments via various protocols such as: Lightning address, LNURL-Pay, Bolt11, BTC address

Technologies Used

• Breez SDK for all the bitcoin functionality
• React with TypeScript
• Tailwind CSS for styling

Getting Started

Clone the repository

git clone https://github.com/breez/glow-web.git
cd glow-web

Install dependencies

npm install

Set up environment variables

1. Copy the example environment file:

cp example.env .env.local

2. Edit .env.local and add your Breez API key (required):

VITE_BREEZ_API_KEY="your_breez_api_key_here"

See example.env for all available configuration options.

Start the development server

npm run dev

The application will be available at http://localhost:5173

Building for Production

npm run build

The build output will be in the dist directory.

Security Note

If you don’t use a passkey (recommended), your recovery phrase is stored in localStorage which is not a secure storage mechanism. Any JavaScript running in the browser (including XSS attacks or malicious extensions) can access it, potentially compromising your funds.