Design for smartphones, tablets, and personal computers with the Multiscreen Preview panel. With media query support, developers can style and visualize rendering for a range of devices in a single panel.

Style with the CSS panel, updated to support CSS3. Design view now supports media queries, applying different styles as you adjust screen dimensions. Code for the future with HTML5, with code hinting and Design view rendering support. Live View now includes support for <video> (with QuickTime) and <svg> tags.

Add advanced interactivity with jQuery code hinting. jQuery is the industry-standard JavaScript library, making it simple to add a wide range of interactivity to web pages. Get a jump start with starter templates for mobile phones.

Check your page with Live View, now with an updated WebKit rendering engine. Preview designs for multiple devices with real-time media query  support. HTML5 and CSS3 capabilities and enhancements make designing for mobile devices even more efficient.

Build and package native apps for Android™ and iOS with new PhoneGap functionality. Convert your existing HTML to a mobile phone application within Dreamweaver using the open source PhoneGap framework.

Use the W3C's own online validation service to ensure the accuracy of your standards-based web designs.

Store your files more securely with support for Subversion® software, which has been updated to the version 1.7 protocol.

Deploy files more securely with enhanced FTP support. Dreamweaver CS5.5 now adds native support for the FTPS and FTPeS protocols.