Hidden Firefox feature and the plugin Pencil

September 3, 2008

I found something interesting, which I guess some already know, but still I though its a nice feature. Copy following into your Firefox browser address bar and hit enter.

javascript:document.designMode='on'; void 0


You can now change a homepage by deleting stuff or replacing some text to test something or making a faked screenshot. I think this can be really handy sometimes and it is build in. Something more sophisticated is following Firefox 3.x plugin, called Pencil (You can also download it here). Pencil is a Firefox add-on to do GUI prototyping and simple sketching, take a look at this blog post which shows what Pencil can do. As a teaser I put a screenshot at the end to this post 😉