The headings for each of the bookmarklet blurbs are the bookmarklets. Click on them to test, right-click and bookmark, drag & drop, copy shortcut.. whatever. But check the compatability notes first. If your current browser isn't tested or supported who knows what will happen. You can also copy the bookmarklet from the text field with each, create a new bookmark/favourite and paste it in as the URL.

Constrain Width
 compatible: tested in win32 IE6, FF1.5

Reduces the width of the page by 10% each time you click it.

bookmarklet source:

 

Page Title & Url
 compatible: tested in win32, mac NN3+, win32 IE4+; Mac ie5

Throws a prompt with the current page's title and url, selected for quick copying. Hit escape or return/enter to dismiss the prompt. I find this handy for quickly dropping a url into an email, or compiling a list of pages.

bookmarklet source:

 

Create Link
 compatible: tested in win32, mac NN3+, win32 IE4+; Mac ie5

In the same vein as Page Title & Url, this throws a prompt with the current page's title and url - formatted as a link (<a href="url">title</a>), selected for quick copying. Hit escape or return/enter to dismiss the prompt.

bookmarklet source:

 

Also see

My web development bookmarklets, and myriad others at bookmarklets.com