Bookmarklets or smart bookmarks are javascript links. They don’t waste resources like plugins but do the same work. Bookmarklets are based on javascript so they work with any browser. Here is a list of 5 of the most useful bookmarklets. They can be used simply by dragging the link to your bookmark bar and clicking it when the appropriate page is open.

Subscribe a page to Google reader using the following bookmarklet. Subscribe

You can download Youtube videos using the following bookmarklet. Visit this page for the youtube bookmarklet and detailed information on how to use it: Google system

The bit.ly Bookmarklet shortens your long link so you can share your bit.ly link on Twitter, Gmail, Email, or Facebook. The following page contains the bit.ly bookmarklet: Bit.ly tools

Translate a page with just one click to your language. A link to the set of translate buttons. Google Translate

Make a PDF from any webpage by using this bookmarklet. PDFmyURL