pageres

Capture screenshots of websites in various resolutions. A good way to make sure your websites are responsive.

It's speedy and generates 100 screenshots from 10 different websites in just over a minute.

Install

$ npm install --global pageres

PhantomJS, which is used for generating the screenshots, is installed automagically, but in some rare cases it might fail to and you'll get an Error: spawn EACCES error. Download PhantomJS manually and reinstall pageres if that happens.

Usage

Specify urls and screen resolutions as arguments. Order doesn't matter.

If no resolution is specified it will default to 1366x768 which is the most popular resolution.

$ pageres <url> <resolution>
$ pageres <resolution> <url>

# <url> can also be a local file path.
$ pageres <file> <resolution>

List multiple urls and resolutions for pageres to capture all combinations.

$ pageres <url> <resolution> ...

$ pageres todomvc.com 1024x768 1366x768 # 2 screenshots
$ pageres todomvc.com yeoman.io 1024x768 # 2 screenshots
$ pageres todomvc.com yeoman.io 1024x768 1366x768 # 4 screenshots

Pipe in a newline separated list of urls and screen resolutions which will get merged with the arguments.

# In this case a list of screen resolutions
$ pageres <url> < screen-resolutions.txt

Group arguments with square brackets.

$ pageres [ <url> <resolution> ] [ <url> <resolution> ]
$ pageres [ <url> <resolution> ... ]

# Mix grouped and single arguments
$ pageres [ yeoman.io 1024x768 1600x900 ] todomvc.com 1366x768

# Options defined inside a group will override the outer ones.
$ pageres [ yeoman.io 1024x768 --no-crop ] todomvc.com 1366x768 --crop

Screenshots are saved in the current directory.

Examples

# Basic multi-url, multi-resolution usage
pageres todomvc.com yeoman.io 1366x768 1600x900

# Override outer option within group
pageres [ yeoman.io 1366x768 1600x900 --no-crop ] [ todomvc.com 1024x768 480x320 ] --crop

# Provide a custom filename template
pageres todomvc.com 1024x768 --filename '<%= date %> - <%= url %>'

# Capture a specific element
pageres yeoman.io 1366x768 --selector '.page-header'

# Hide a specific element
pageres yeoman.io 1366x768 --hide '.page-header'

# Delay and pipe in a list of urls
pageres --delay 3 1366x768 < urls.txt

# Capture a local file
pageres unicorn.html 1366x768

# Pipe in resolutions
cat screen-resolutions.txt | pageres todomvc.com yeoman.io

Options

-v, --verbose

Verbose output to see errors if you need to troubleshoot.

-c, --crop

Crop to the set height.

$ pageres todomvc.com 1024x768 --crop

-d, --delay

Delay screenshot capture.

$ pageres todomvc.com 1024x768 --delay 3

--filename <template>

Custom filename.

$ pageres todomvc.com 1024x768 --filename '<%= date %> - <%= url %>'

--selector <element>

Capture DOM element.

$ pageres yeoman.io 1366x768 --selector '.page-header'

--hide <element>

Hide DOM element, can be set multiple times.

$ pageres yeoman.io 1366x768 --hide '.page-header'

--no-crop

Override a global crop option within a group.

$ pageres [ yeoman.io 1366x768 --no-crop ] todomvc.com 1024x768 --crop

--cookie <cookie>

Browser cookie, can be set multiple times.

$ pageres yeoman.io 1024x768 --cookie 'foo=bar'

--username <username>

Username for HTTP auth.

--password <password>

Password for HTTP auth.

--scale <number>

Scale webpage n of times.

--format <string>

Image format. Either png (default) or jpg.

Config file

You can persist your commands into a file and run it whenever with eg. sh .pageres:

# .pageres
pageres [ todomvc.com 1000x1000 --crop ] [ yeoman.io 500x500 ]
pageres [ google.com 1000x1000 --crop ] [ github.com 500x500 ]

Task runners

Check out grunt-pageres if you're using grunt.

For gulp and broccoli, just use the below API directly. No need for a wrapper plugin.
(If you create a useless gulp/broccoli wrapper plugin for this, my cat will be very sad.)

API

Install

$ npm install --save pageres

Usage

var Pageres = require('pageres');

var pageres = new Pageres({delay: 2})
	.src('yeoman.io', ['480x320', '1024x768', 'iphone 5s'], {crop: true})
	.src('todomvc.com', ['1280x1024', '1920x1080'])
	.dest(__dirname);

pageres.run(function (err) {
	if (err) {
		throw err;
	}

	console.log('done');
});

Pageres(options)

options

delay

Type: number (seconds)
Default: 0

Delay capturing the screenshot.

Useful when the site does things after load that you want to capture.

crop

Type: boolean
Default: false

Crop to the set height.

cookies

Type: array of string, object

A string with the same format as a browser cookie or an object of what phantomjs.addCookie accepts.

Tip

Go to the website you want a cookie for and copy-paste it from Dev Tools.

filename

Type: string

Define a customized filename using Lo-Dash templates.
For example <%= date %> - <%= url %>-<%= size %><%= crop %>.

Available variables:

• url: The URL in slugified form, eg. http://yeoman.io/blog/ becomes yeoman.io!blog
• size: Specified size, eg. 1024x1000
• width: Width of the specified size, eg. 1024
• height: Height of the specified size, eg. 1000
• crop: Outputs -cropped when the crop option is true
• date: The current date

selector

Type: string

Capture a specific DOM element.

hide

Type: array

Hide an array of DOM elements.

username

Type: string

Username for authenticating with HTTP auth.

password

Type: string

Password for authenticating with HTTP auth.

scale

Type: Number
Default: 1

Scale webpage n times.

format

Type: String
Default: png
Values: png, jpg

Image format.

pageres.src(url, sizes, options)

Add a page to screenshot.

url

Required
Type: string

URL or local path to the website you want to screenshot.

sizes

Required
Type: array

Use a <width>x<height> notation or a keyword.

A keyword is a version of a device from this list. You can also pass in the w3counter keyword to use the ten most popular resolutions from w3counter.

options

Type: object

Options set here will take precedence over the ones set in the constructor.

pageres.dest(directory)

Set the destination directory.

directory

Type: string

pageres.run(callback)

Run pageres.

callback(error, [items])

Type: function

If you don't set a dest() you'll get items in this callback, which is an array of streams.

pageres.on('warn', callback)

Warnings with eg. page errors.

Google Analytics screen resolutions

You can use the most popular resolutions for your site with pageres by following these steps:

• In Google Analytics go to the site for which you want screen resolutions
• Select Audience => Technology => Browser & OS
• Click the Screen Resolution link in the middle of the screen
• Click the Export button at the top, then Google Spreadsheets, and select yes for importing
• Select all the resolutions and copy them into a new file and save it
• In your terminal run: pageres website.com < file-from-above-step.txt

Credit

Sindre Sorhus (creator)	Kevin Mårtensson (maintainer)

License

MIT © Sindre Sorhus