Your indispensable test assistant.

The Periodic Background Sync API allows web applications to alert their service worker to make any updates, at a periodic time interval. Uses may include fetching latest content whilst a device is connected to wifi, or allowing background updates to an application. Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for.

With each web page, device and browser, testing time grows exponentially. From live reloads to URL pushing, form replication to click mirroring, Browsersync cuts out repetitive manual tasks. It’s like an extra pair of hands. Customise an array of sync settings from the UI or command line to create a personalised test environment. Need more control? Browsersync is easily integrated with your web platform, build tools, and other Node.js projects.

Integrates with your current build tools like Gulp & Grunt

Awesome Features

Built on Node.JS_ENTRY to support Windows, MacOS and Linux. Setup in less than 5 minutes.

Browsersync is an open source project available to use under the Apache 2.0 License.

Easily integrated with task runners like Grunt and Gulp, or included in other Node projects.

Test your website against a slower connection. Even when devices are connected to wifi.

Sync Firefox

Your scroll, click, refresh and form actions are mirrored between browsers while you test.

Browsers are automatically updated as you change HTML, CSS, images and other project files.

Run the new browser-based UI for quick control, or stick with the original command line usage.

Toggle individual sync settings to create your preferred test environment.

Records your test URLs so you can push them back out to all devices with a single click.

An open source project by JH

BrowserSync is an open-source project created and maintained by the front-end designers/developers at JH. Together with contributors from all over the world, we aim to make modern, multi-device web development faster & easier.

Tried and trusted.

Dave Rupert

Mozilla Sync

Want to feel like a modern day demigod? Fire up Browsersync and control an entire device lab with your phone.

Paravel and Shop Talk Show

Addy Osmani

It has a fantastic feature-set and at least 5 developers I’ve spoken to this week alone swear by it for their own synchronized cross-device testing.

Google and addyosmani.com

Get started in 5 minutes.

1. 1. Install Node.js

   Browsersync is a module for Node.js, a platform for fast network applications. There are convenient installers for MacOS, Windows and Linux.

2. 2. Install Browsersync

   The Node.js package manager (npm) is used to install Browsersync from a repository. Open a terminal window and run the following command:

   You’re telling the package manager to download the Browsersync files and install them globally so they’re available to all your projects.

3. 3. Start Browsersync

   A basic use is to watch all CSS files in the css directory and update connected browsers if a change occurs. Navigate your terminal window to a project and run the appropriate command:

   Static sites

   If you’re only using .html files, you’ll need to use the server mode. Browsersync will start a mini-server and provide a URL to view your site.

   Dynamic sites

   If you’re already running a local server with PHP or similar, you’ll need to use the proxy mode. Browsersync will wrap your vhost with a proxy URL to view your site.

Firefox Sync Server