How to change DPI of a PNG file? (in command line, without ImageMagick)

Is 2.10 MB small enough? If yes, use NConvert and a batch command like:

nconvert -out png -dpi 150 -keepdocsize -keepfiledate mysource.png

What is NConvert for?

XnView is a GUI-based application, you can change and manipulate images using a graphical user interface. NConvert has about the same capabilities as XnView, but it is a command line tool and has no graphical user interface. You can use NConvert in Batch scripts or another application can call it.

Helpful links

  • Beginner guide and Wiki with some examples to start
  • Help file to see what command line parameters are available (Uploaded on pastebin)
  • A graphical front-end using Nconvert is XnConvert. Use this to create & export Nconvert batch files
  • Forum for Xnconvert and Nconvert for

Tags:

Png

Dpi

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