The can be used just like normal bookmarks by clicking on them.
They can perform all kinds of tasks and make modifications to the page
you are viewing.
To test a bookmarklet click on the link.
To install a bookmarklet simply "right-click" on a link and save it as
a bookmark (or favorite) or drag it to your bookmarks.
You can then run the bookmarklet when visiting any page, by
clicking on the bookmark.
← Indicates a directly installable bookmarklet.
Meta Information About Sites
Whois Info - Opens a new window with whois info from domaintools.com for the current site.
Google search this domain - Search within the current domain using Google. Attempts to search in the lowest possible domain related to the current site (e.g. addons.mozilla.org -> mozilla.org). However the list of all second level domains (like co.uk) is currently incomplete, so this search might still search a level too low.
Google search selected text - Select some text on a page and search for it on Google. If you didn't select some text, you'll be prompted for some text to enter manually.
Linkify - Make all URLs clickable. Adapted from the Greasemonkey user script with the same name at http://greasemonkey.mozdev.org/ (try to make this URL clickable). Works in Firefox and Opera only.
Google definition - Select a word or some text on a page and search for the definition of it on Google. If you didn't select some text, you'll be prompted for some text to enter manually.
YourDictionary definition - Select a word or some text on a page and search for the definition of it on YourDictionary. If you didn't select some text, you'll be prompted for some text to enter manually.