There’s a simple little fix that prevent webpages from resizing your Firefox browser that I put in every time. There’s nothing I hate more than a website that resizes my whole browser to the size of a 40×40 ad, forcing me to expand it back to my regular 1024×768 size. It’s a very easy method and doesn’t require a information assurance degree to figure out.
Note: Personally, I like to disable all options in this window for best result as it prevent websites from controlling my browser’s behavior.
Hard Method: In the address bar type about:config and hit Enter. Do a search for resize. You will see dom.disable_window_move_resize. Right click that and choose Modify. In the box that pops up, type true and hit OK.