Yes, it is a one-trick pony, but this free Firefox add-on performs its single function well, allowing you to quickly resize your browser window with a click of a mouse button.
Yet Another Window Resizer operates via your context menu, giving you four preset dimension options, or letting you easily customize your own through the Options menu. In our tests, the browser window was instantly resized to our specifications with only a couple of clicks.
The functionality is limited, but this freeware provides a helpful service, it's easy to use, and it doesn't take up much space. We recommended for users who wants a quick way to resize windows while browsing with Firefox.
Yet Another Window Resizer extensions allows you to resize browser window to default screen resolutions.