How do you lower the file size on screenshots?

Discussion in 'macOS' started by forza69, Jan 12, 2013.

  1. forza69 macrumors 6502a

    forza69

    Joined:
    Jan 30, 2010
    Location:
    San Diego, CA
    #1
    I recently upgraded to a 15 inch rMBP and it is the first Mac I have ever owned. I need to take some screenshots and upload them to a site but whenever I try and upload it says file too big (8-10MB). Is there an easy way to lower the file size to say, 2MB? I'm using the 1920x1200 resolution setting at the moment. TYIA
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    As screenshots are stored in PNG format, file sizes are big, especially with your resolution.

    However, you can open those PNGs via double click in Preview, then adjust the physical size via Menu Bar > Tools > Adjust Size and enter pixel values you find enough.
    Then you can save the PNG as JPEG via File > Save As (CMD+SHIFT+S) > select Format > JPEG and be done with it. That should get you files smaller than 2 MB, if the resolution is not 3840 x 2400 pixel or so.
     
  3. Bear macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #3
    I believe the default for screenshots is PNG, you could switch it to JPG which will produce noticeably smaller files. In Terminal:
    Code:
    defaults write com.apple.screencapture type jpg
    killall SystemUIServer
    
    This would save having to go through Preview.
     
  4. switon, Jan 12, 2013
    Last edited: Jan 12, 2013

    switon macrumors 6502a

    Joined:
    Sep 10, 2012
    #4
    RE: jpg instead of png...

    Why not change the default format for screen shots:

    Code:
    defaults write com.apple.screencapture type jpg; killall SystemUIServer
    Regards,
    Switon

    P.S. Whoops, but Bear beat me to it.
     
  5. forza69 thread starter macrumors 6502a

    forza69

    Joined:
    Jan 30, 2010
    Location:
    San Diego, CA
    #5
    Thanks guys! I tried out an app called RetinaCapture and it seems to do the job easily. I'll probably uninstall it now and do what you guys recommend which is even easier.
     
  6. charlieegan3 macrumors 68020

    charlieegan3

    Joined:
    Feb 16, 2012
    Location:
    U.K
    #6
    Open in preview, tools > adjust size and save.
     

Share This Page