Simple collection of useful bookmarklets(bookmarks that run Javascript on the page). I've created these bookmarklets to help make testing webpages easier, cutting out the boring repetitive parts of my job. These bookmarklets are small pieces of Javascript, the code appears on a single line and gets added to the URL field when creating a new bookmark.
The prefix of javascript: is added to the start of the code for example javascript: alert('Hello';); everytime the bookmarklet is clicked the sample bit of code is run and will display an alert in the browser to the user.