Completely customize the window size of the Firefox browser

Step 1: Create a bookmarks. Or drag a link directly to the Bookmarks Bar.

 

Step 2: Rename the bookmarks. Here we set it to 1024*768. Of course, you can change it to any other name. The name is only used to conveniently view the function of each bookmark link.
The next step is the most important step. Fill in the location, that is, the bookmarks address.Javascript: Windows. resizeTo (1024,768 ).Save the settings. In this way, you only need to click this bookmarks link, and your Firefox browser window will adjust the size of 1024*768 pixels.

 

Step 3, in the same way, you can create 800*600, or any other pixel, or even exceed the Firefox window size of your browser window.

Window. moveTo (x, y); // X, Y is the two coordinate values of the new position.