When trying to optimize a Picture for web I can't hit the save button because the window that pops up is bigger than my screen and I can't minimize it by dragging on the corner. Is there anyway I can fix this? :)
What OS are you using to run Photoshop? What screen resolution? If you look in the bottom, right corner of the dialog, do you see a few dots laid out as a triangle? That's the draggable handle to resize the dialog.
In the bottom, right corner of the dialog, you should see a triangle of dots. This is the resize handle for the dialog. You can click and drag it to a new size with this. If you're still not able to see, I would suggest changing your UI Scaling under Edit > Preferences > Interface and setting it to Auto.