WinSizeNPosition is a Firefox add-on that provides the functionality to save and restore the size and position of your browser window. It fully supports multi-monitor environments and allows manual input of total resolution and positional relationship of monitors. After changing multi-monitor settings, you can easily reset to the previous configuration using the Resetsafemode:P feature.
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3.0.0
Full supported for multi-monitor environment
However, since Javascript can't automatically acquire the resolution other than the main monitor used for displaying the browser window, manually calculate and input the total resolution of the entire environment.
Since the positional relationship of the monitors can not be automatically acquired in the same way, please manually calculate and input it.
After changing multi monitor settings etc, when the browser window to boldly go where no man has gone before,please you use to Resetsafemode:P(Press to Alt+0)
User reviews
It's been a while since pop-up windows don't fit perfectly with the side edges of the desktop. despite trying to increase or decrease the distance from the left, nothing changes. for the left window I tried to pot a negative value but still the window is far from the edge