PhantomShot is a simple JavaScript library that enables you to take predefined screenshots from web pages using the headless WebKit PhantomJS. Viewports and screenshot URLs are defined in a configuration file.

Features

• Shoot multiple screenshots in a row
• Define custom viewport sizes and device pixel ratios
• Take screenshots of pages that require login
• Only save portions of the screen (clipping)

Use cases

Keep screenshots up to date in documentation content, user manuals or on your product website.

This is a very, very early working prototype. Do not expect too much in terms of error handling or code quality.

Usage

Basic

First create a config file (take a look at sample-config.json for some inspiration). Then call the script from command line:

phantomjs phantomshot.js [path-to-config-file]

Make sure you are cd'd to the directory of the config file, otherwise it won't work.

The config file

TBD (take a look at sample-config.json in the meantime)

Shooting a page that requires login

Add a small block of login information to your config.json:

"login": {
    "url": "/login",
    "script": "login-script.js"
}

Before taking screenshots the specified URL will be called. After pageload the login script will be injected into the page. It should fill the required form fields and sumit the login form (see sample-login.js). PhantomShot starts taking screenshots after the login has been performed.

Building

Requirements

You need to have node up and running, then:

npm install -g gulp tsd

After checking out the phantomshot repository, install dependencies:

npm i && tsd reinstall --save

A build task is configured in gulp

gulp build
# or
gulp watch

Misc

About PhantomJS

PhantomJS is a headless WebKit with JavaScript API. You should use the most recent version 2 to get web font support and accurate rendering like in your modern desktop browser.

Just grab a binary from the download page or create a custom build.