With
a Zoom tool active, select Resize Windows To Fit in the options
bar. The window changes size as you magnify or reduce the view of
the image.
When Resize Windows To Fit is deselected, the window maintains
a constant size regardless of the image’s magnification. This can
be helpful when you are using smaller monitors or working with tiled
images.
Note: To automatically resize the window when using keyboard
shortcuts to reduce or magnify an image view, in the Editor, choose
Edit > Preferences > General, and then select
the Zoom Resizes Windows preference and click OK.