Check it out, web developers, this is a handy tool for exploring / understanding / debugging web pages in IE, with features that enable you to:

  • Explore and modify the document object model (DOM) of a Web page.
  • Locate and select specific elements on a Web page through a variety of techniques.
  • Selectively disable Internet Explorer settings.
  • View HTML object class names, ID's, and details such as link paths, tab index values, and access keys.
  • Outline tables, table cells, images, or selected tags.
  • Validate HTML, CSS, WAI, and RSS Web feed links.
  • Display image dimensions, file sizes, path information, and alternate (ALT) text.
  • Immediately resize the browser window to a new resolution.
  • Selectively clear the browser cache and saved cookies. Choose from all objects or those associated with a given domain.
  • Choose direct links to W3C specification references, the Internet Explorer team weblog (blog), and other resources.
  • Display a fully featured design ruler to help accurately align and measure objects on your pages.
  • Find the style rules used to set specific style values on an element.
  • View the formatted and syntax colored source of HTML and CSS.

Download it here, then visit the Developer Toolbar Wiki on Channel9 to provide your feedback. 

Wow!  How did I get along without it?  I can't believe I just discovered this, so I went to the Microsoft Downloads Notifications Signup page to make sure to get notified when new downloads are released.