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How to Auto Resize Application Window on Mac

    How to Auto Resize Application Window on MacOS. Resize App Window on Mac to Exact dimensions. Resize and position any Application Window to a specific size on MacOS using Applescript editor. e.g Safari, Google Chrome, etc to a specific size creating an Applet Script.

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    Auto Resize Application Window on Mac

    To Resize Application window on the desktop to an exact size.
    Open the AppleScript editor and copy this script 1:

    set theApp to "Google Chrome"
    set appHeight to 1080
    set appWidth to 1920

    tell application "Finder"
    set screenResolution to bounds of window of desktop
    end tell

    set screenWidth to item 3 of screenResolution
    set screenHeight to item 4 of screenResolution

    tell application theApp
    activate
    reopen
    set yAxis to (screenHeight - appHeight) / 2 as integer
    set xAxis to (screenWidth - appWidth) / 2 as integer
    set the bounds of the first window to {xAxis, yAxis, appWidth + xAxis, appHeight + yAxis}
    end tell

    To Resize and Position App Window open the AppleScript editor and copy this script 2:

    set theApp to "Safari"
    set appHeight to 720
    set appWidth to 1280
    set positionY to -100
    set positionX to 1000

    tell application "Finder"
    set screenResolution to bounds of window of desktop
    end tell

    set screenWidth to item 3 of screenResolution
    set screenHeight to item 4 of screenResolution

    tell application theApp
    activate
    reopen
    set yAxis to (screenHeight - appHeight - positionY) / 2 as integer
    set xAxis to (screenWidth - appWidth - positionX) / 2 as integer
    set the bounds of the first window to {xAxis, yAxis, appWidth + xAxis, appHeight + yAxis}
    end tell

    Next, change the app name to any App Window you wish to resize.

    Hit play (or press command-R) to run the script, and the window should resize to the the center of the Desktop with exact size you have pre defined. This script works for the majority of MacOS Applications.

    To finish, from Script editor file menu, click to export as Application.


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