Bookmarklets for Testing Browsers

Bookmarklets for Testing Browsers

I've been doing a lot of bug-hunting for Mozilla, and several times I've found bookmarklets to be useful for testing browser features. These are the bookmarklets that tended to show the most bugs in Mozilla. (I've found plenty of bugs in Microsoft Internet Explorer with them as well, but haven't been keeping track of those bookmarklets and bugs as closely.)

If you've made it this far, you might be interested in this chart that shows how well various Windows browsers support bookmarklets.

(To keep bookmarklets in order to use them on other web pages, drag them to your Bookmarks Toolbar. Or, install them all at once.)

Bookmarklet	Description	Works in
Add borders	Adds a green border around each element on the page. Details
Buttonify	Turns the entire page into a <button>. Details
Rewrite page	Rewrites the page using document.write(innerHTML). Details
reset innerHTML	Rewrites the page using innerHTML = innerHTML. Details
Reset body HTML	Rewrites the page using body.innerHTML = body.innerHTML. Details
clone document	Copies the document into a new window. Details
clone slowly	Clones page several chars at a time (to test incremental rendering) Details