charset

charset Obsolete since HTML5

This attribute defines the character encoding of the linked resource. The value is a space- and/or comma-delimited list of character sets as defined in RFC 2045. The default value is ISO-8859-1.
Usage note: This attribute is obsolete in HTML5 and should not be used by authors. To achieve its effect, use the HTTP Content-Type header on the linked resource.

ariya / phantomjs / overview — Bitbucket

PhantomJS - Scriptable Headless WebKit
PhantomJS (www.phantomjs.org) is a headless WebKit scriptable with JavaScript or CoffeeScript. It is used by hundreds of developers and dozens of organizations for web-related development workflow.
The latest stable release is version 1.5 (codenamed "Ghost Flower"). Follow the official Twitter stream @HeadlessPhantom to get the frequent development updates.
PhantomJS is created and maintained by Ariya Hidayat (Twitter: @ariyahidayat), with the help of many contributors.
Use Cases
Headless web testing. Lightning-fast testing without the browser is now possible! Various test frameworks such as Jasmine, Capybara, QUnit, WebDriver, YUI Test, BusterJS, FuncUnit, Robot Framework, and many others are supported.
Site scraping. Access and manipulate webpages with the standard DOM API, or with usual libraries like jQuery.
Page rendering. Capture the full contents, even with SVG and Canvas, to an image. Build server-side web graphics apps, from a screenshot service to a vector chart rasterizer.
Network monitoring. Monitor network activity, track resource loading, perform load-balancing tests, verify contents optimization, and many others.
Features
Multiplatform, available on major operating systems: Windows, Mac OS X, Linux, other Unices.
Fast and native implementation of web standards: DOM, CSS, JavaScript, Canvas, SVG. No emulation!
Pure headless (X11) on Linux, ideal for continuous integration systems. Also runs on Amazon EC2.
Easy to install: Download, unpack, and start having fun in just 5 minutes.
Ecosystem
PhantomJS needs not be used only as a stand-alone tool. Check also some excellent related projects:
CasperJS enables easy navigation scripting and common high-level testing.
Poltergeist allows running Capybara tests headlessly.
Guard::Jasmine automatically tests Jasmine specs on Rails when files are modified.
GhostDriver complements Selenium tests with a PhantomJS WebDriver implementation.
PhantomRobot runs Robot Framework acceptance tests in the background via PhantomJS.
and many others companion projects.
Questions?
Explore the complete documentation.
Read tons of user articles on using PhantomJS.
Join the mailing-list and discuss with other PhantomJS fans.