CSS debug bookmarklet
An adaptation of a neat CSS debugging tool created by Patrick Brosset
Keyboard = Leopard Bookmarklet
XKCD inspired frivolity.
Tidy URL Bookmarklet
Strips Google Analytics Tracking parameters from the URL of the currently viewed web page. Uses history.replaceState if available to avoid the need for a page reload.
Video still bookmarklet
Grabs a still from the first video element in the page, inserting it as an image in a new window.