Skip to main content
D
defaults34jld5w0219
Participant
May 11, 2021
Answered

Compression PDFs

  • May 11, 2021
  • 3 replies
  • 3808 views

By compressing a file of 1.20 mb ('Medium Compression' option) with the online version Acrobat Tools it becomes 420 Kb, while with my Acrobat Pro Desktop version it becomes 1.01 mb.
Why?

    Correct answer JR Boulay

    Certainly because these two tools do not use the same compression parameters.

    3 replies

    JR Boulay
    Community Expert
    JR BoulayCommunity Expert
    Community Expert
    May 12, 2021

    Never, never, never downsample images to 72 dpi!

    It corresponds to the resolution of old cathode ray screens and it is therefore completely obsolete since current screens are rarely less than 110/120 dpi and some exceed 500 dpi.

    You should not use a value lower than 200 dpi. Knowing that it is more the compression rate which reduces the size of a file than the downsampling.

    Acrobate du PDF, InDesigner et Photoshopographe
    T
    Test Screen Name
    Legend
    May 12, 2021

    "Never, never, never downsample images to 72 dpi!" Well, it depends what you want. If I want a rough layout I go down to 50 ppi or less. Also, for photos (not screen shots) it's a myth that you can only get acceptable results if image resolution is at least screen resolution. Try it! 

     

    And if size is the priority, then we must be prepared to compromise quality. 

     

    I would continue to recommend 72 ppi for almost all work intended for screen viewing. I would advise against using anything over 100 ppi, it just makes a needlessly large file no matter what nominal screen resolution.

    D
    defaults34jld5w0219Author
    Participant
    May 12, 2021

    it would be nice to know which settings use online tasks from the web

     

     

    JR Boulay
    Community Expert
    JR BoulayCommunity ExpertCorrect answer
    Community Expert
    May 11, 2021

    Certainly because these two tools do not use the same compression parameters.

    Acrobate du PDF, InDesigner et Photoshopographe
    D
    defaults34jld5w0219Author
    Participant
    May 12, 2021

    Ok, I understood this but what are the settings for the 'medium compression' options? I've tried everything but it doesn't work for me.

    is this the configuration panel?

    thanks

     

     

     

    T
    Test Screen Name
    Legend
    May 12, 2021

    There is no simple rule of PDF compression. "Medium" isn't a standard thing, it's just what one app chooses to do. You need to play with Acrobat's settings. Tip: Audit Space Usage will be your main tool.

    Bernd Alheit
    Community Expert
    Bernd AlheitCommunity Expert
    Community Expert
    May 11, 2021

    What options does you use in Acrobat?

    Terms & ConditionsAccessibility statement
    Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices