Bookmarklets are not well-supported in the iPad browser, but here is a work-around to use the Pepperplate bookmarklet.
- Open Bookmarks on the iPad in Chrome or Safari
- Create a new bookmark on any site you are visiting
- Replace the new bookmark url with the following code snippet
With this script activated in the iPad bookmark toolbar on Safari or Chrome browsers, you should be able to activate the bookmarklet on your iPad.