How to resize the Firefox window with a bookmarklet

Many developers work on large screens, but want to Preview web design in a 1024×768 browser screen.
To resize the Firefox browser window to 1024 x 768 create a resizing bookmarklet.

Creating a Resizing Bookmarklet

Step 1

Right click on Bookmark Toolbar -> New Bookmark to launch the Bookmark dialog box.

Step 2

Insert the following into the box:

• Name: Give a descriptive name if you are planning to add several bookmarklet.
• Location: Place javascript:window.resizeTo(1024,768) into the textfield. Alter 1024 & 768 to create bookmarklet of another size.

Both Keywords and Description can be left blank.

Step 3

Test your bookmarklet, click and it should resize to it’s specific size.