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paula_8304
Participant
January 18, 2026
Question

Converting images to 300 dpi using bridge

  • January 18, 2026
  • 3 replies
  • 129 views

Is it possible to convert images in a PDF file from 72 dpi to 300 dpi by using a bridge to Photoshop? Thank you for your help!

3 replies

Stephen Marsh
Community Expert
Stephen MarshCommunity Expert
Community Expert
January 19, 2026

@paula_8304 


Inventing (interpolation, resampling, up-scaling) pixel density/resolution isn't recommended. Your PDF might pass a preflight check, but the images may not look any better*.

 

Bridge doesn't sound like the right tool for this job.

Are you extracting the separate images from the PDF without needing them to be updated in the PDF? If so, Photoshop would be the choice.

If you need to update the images within the PDF, then Acrobat Pro and Photoshop would be the tools of choice (or Acrobat Pro with Enfocus PitStop Pro).

 

It's usually easier to replace the low resolution images with higher resolution images in the original authoring program and then output a new higher resolution PDF, than to edit the low resolution PDF.

 

*There are AI and other resizing tools which could be used, YMMV.

 

P.S. That would be PPI (not DPI), as images are comprised of pixels.

    P
    paula_8304Author
    Participant
    January 19, 2026

    Thank you, Stephen. I'm hiring a formatter to do this so I don't know the details. I gave her a Word doc containing 72 dpi images, and I want her to make them 300 dpi for printing. She has Acrobat, but the bridge is how she does this. Could you possibly describe (for a non-tech person) the simplest and best procedure for accomplishing what I want? Thanks so much!

    Stephen Marsh
    Community Expert
    Stephen MarshCommunity Expert
    Community Expert
    January 19, 2026

    Best not to encapsulate the images into a Word document.

     

    Supply the images in their original pixel resolution and format.

     

    It all comes down to the print size of the image, the effective resolution.

     

    Take the following example:

     

    An image that is 600 x 900px in size.

     

    At 72 pixels per inch resolution, the print size is 8.3 x 12.5 inches in size.

     

    If this is printed at 2 x 3 inches in size, the effective resolution is 300 ppi - but it's still the original 600 x 900 pixels in size!

     

    Print the same 600 x 900 pixel image at 4 x 6 inches in size and the effective resolution would be 150 ppi.

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