After starting Mathematica 12.3, the default window size is like this, it's too small for me, I don’t want to manually drag the window every time. I have tried this,

SetOptions[$FrontEnd, WindowSize -> {800, 800}]

and change "Options Inspector", these are no longer valid, only SetOptions[InputNotebook[], WindowSize -> {800,800}] works, I added it to "init.m", but each time is delayed to take effect, I don't like this solution. I hope there is a simple way to return to the previous behavior.

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1 Answer 1


I found a solution for this, but only works on latest macOS Ventura.

Open the stage manager: enter image description here

Change the setting to this: enter image description here

then reopen Mathematica ,the default notebook should centered

enter image description here


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