Need 300dpi PNG and PDF

[lepagano]

Hello all,

I have a question regarding PNG and PDF dpi. I am running a program that outputs PNG and PDF images. Unfortunately, the PNG's are only 96dpi. I need these images to be in 300dpi. Also, I have PDF's that I convert to PNG's which also need to be 300dpi. Does anyone know if there is a way to convert the PNG's to be a high resolution (300dpi)?

Thank you.

Regards,

Lara

[fmw42]

if I recall, PNG does not support dots per inch only dots per centimeter. So you will need to convert whatever dpi you want to the equivalent dpc, then use -density and -units

see http://www.imagemagick.org/Usage/formats/#png_density