Page Comparison

...

1. In Chrome, click the three-bar icon in the top right, then 'Bookmarks', then 'Bookmark manager'. 
2. Right-click the 'Bookmarks bar' folder and select 'Add page'. 
3. For the 'Name', put 'Hello World!', and for the URL paste in the code below. 
   
   1. javascript: alert('Hello World!');
4. To test the bookmarklet, open a new tab and click the new bookmark. 

How to launch a bookmark in Chrome with a keyboard shortcut

• Try this: https://github.com/courage/bookmark-shortcuts