I would like to set browser size (mainly width) larger than the screen resolution in Windows XP. It looks like there is no easy way of dragging the browser window and resizing it. It resizes to maximum width and height of the actual screen, but no larger.
I need to check and test some webpages on large screens, but I have only a small notebook of my own. Is there a way how to accomplish a larger browser window? Preferrably in Chrome, but any browser in Windows will do.
I managed to resize the Chrome window using ScreenSpace from dandeware.com (no affiliation). There's a free lite version as well as a paid version.
After you install Screenspace, select the Chrome window and press Ctrl-Alt-R. The software then shows a virtual window and lets you resize the Chrome window in any direction beyond the virtual window. Click on the green checkmark and the Chrome window will have the same size on your physical screen.
In Firefox Responsive Design Mode
Menu -> Developer -> Responsive Design Mode (Ctrl-Shift-M)
gives you a drop-down to select the window size.
copy of answer to https://superuser.com/questions/1263519/how-to-create-a-1280x800-screenshot-of-a-chrome-browser-viewport/1263523