Military Map compression help

Discussion in 'Network Information, Suggestions and Feedback' started by buggsy, Mar 1, 2017.

  1. buggsy

    buggsy Junior Member

    Hi everyone, I am trying to compress military maps to add to my web site and am unable to shrink them down small enough. Can anyone tell me how I can go about this. They are saved as tiff files (around 230mb) and I am able to compress them to, at the lowest, 104mb. I have tried Zip, PDF and jpeg. at the lowest settings. I need to get them down to 25mb. Any help would be greatly appreciated.
    Thanks, Buggsy
     
  2. idler

    idler GeneralList Patron

    There is the jpeg2000 format if your software supports it. I will admit to being a bit behind on these matters, I'm still on Photoshop Elements 4!
    Other than that, halving the resolution should quarter the file size, so it might be worth seeing what they look like.
     
  3. Blutto

    Blutto Plane mad

    The biggest factor in file size is the dpi (dots per inch) or pixels. The 'Paint' program in Windows will resize (select pixels not cms). As a test I've just reduced a 105mb file to 702kb. Resolution suffers, but with experimenting you should be able to find a balance between that and file size.

    Picture file formats are already quite heavily compressed, which is why programs like zip etc. make little difference.

    upload_2017-3-2_14-50-53.png
     
  4. Recce_Mitch

    Recce_Mitch Very Senior Member

    You could try SnipClik. It resizes quite well.

    Cheers
    Paul
     
  5. buggsy

    buggsy Junior Member

    Thanks everyone for your help. I did get it to work by using Adobe Acrobat DC. It will compress maps (250mb) to between 5 and 6mb. They are a little fuzzy when large but are very clear when you zoom in once or twice. I had 20 maps to compress so I am very happy that this worked so easily. Thanks again you all have been really nice for trying to help.
    Buggsy
     

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