How to save an image as 72ppi?

FirstDanFirstDan Member Posts: 208
edited December 2011 in Art, Graphics, Music and Sound
Hi all,

In Photoshop CS5, I am currently saving my images with a resolution of 72 dots per inch, is this correct? There is no setting for pixels per inch?

Thanks
Happy New Year!!

Comments

  • RDRD Member Posts: 88
    Hello there, in Photoshop, the DPI can usually be accessed by clicking "Image" and then selecting "Image Size". There is a field which you can change the dpi to whatever, but be warned - changing the dpi also changes the image size overall. Simply change the dpi, and reset the Width & Size to what they were, BEFORE you changed the dpi.
  • MotherHooseMotherHoose Member Posts: 2,456
    in your Mac Preview.app > Tools > Show Inspector … you can verify all the metadata on your image
    you also can > Tools > Adjust Size … to Scale/Resize and/or change dpi.

    for our purposes, at this time, dpi and ppi are interchangeable in definition … (one bit for pixel)
    In GS use only 72dpi

    MH
  • gyroscopegyroscope I am here.Member, Sous Chef, PRO Posts: 6,598
    edited December 2011
    Hi, good advice from the other guys; also it's probably best to save it using Save for Web and Devices. This is because it optimises the image for screens only (i.e iPhone/iPad, etc). Here's a vid about it - it's a bit overkill but useful all the same:

    http://www.wonderhowto.com/how-to-use-save-for-web-feature-adobe-photoshop-cs4-cs5-385914/

    You'll want to save the file as a png-24, with or without transparency, depending on your image.

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  • CloudsClouds Member Posts: 1,599
    FirstDan "In Photoshop CS5, I am currently saving my images with a resolution of 72 dots per inch, is this correct? There is no setting for pixels per inch?"

    People conflate dpi and ppi, as words they're used interchangeably these days, but strictly speaking you want to be generating images at 72 pixels per inch (ppi) - and when you hear someone refer to dpi (certainly in relation to Gamesalad) then assume they mean ppi.

    I have been using Photoshop since around 1991/1992 (showing my age !!) - in every version I've ever used the Image Size panel have always said 'pixels/inch' [verbatim] - still does to this day ! It's never said 'dots/inch', dpi or DPI, never ever ever !

    : )
  • CloudsClouds Member Posts: 1,599
    Dantuma ". . . . in Photoshop, the [pixels/inch] can usually be accessed by clicking "Image" and then selecting "Image Size". There is a field which you can change the [pixels/inch] to whatever, but be warned - changing the [pixels/inch] also changes the image size overall. Simply change the [pixels/inch], and reset the Width & Size to what they were, BEFORE you changed the [pixels/inch]."

    Or simply uncheck the Resample Image box and then enter 72 pixels/inch in the Resolution field.
  • RDRD Member Posts: 88
    edited December 2011
    Oh woops, thanks for the help there Tynan, never knew about the "Resample image" box, and I'll try to say "ppi" all the time. :)
  • CloudsClouds Member Posts: 1,599
    Dantuma ""I'll try to say "ppi" all the time"

    Lol, I will be watching you.

    : )
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