Validate and show source with the Web Developer Extension

I’m a big fan of the Web Developer Extension by Chris Pederick. But when I validate my pages, I prefer to include the source.

That’s an easy thing to accomplish. Here’s how:

1. Type about:config in the address bar of your browser.
2. Scroll down to webdeveloper.tool.3.url
3. Double-click on that line
4. Add ‘&ss=1’ (minus the quotes) to the URI.