• June 17, 2019

Specify the units – I seem to remember having a problem when I omitted this option (although DPI should be the default), for example: convert. convert -units PixelsPerInch -size x xc:black -resample 96 The GIF format actually totally ignores/discards the dpi anyway, as you can see diff finds. #resample. As for your screen — measure it! it is typically (these days) 90 to dpi. Remember dpi.

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This way we can help to solve the problem. Sign up using Email and Password. Usage questions which are too arcane for the normal user list should also be posted here.

Convert to dpi – ImageMagick

Loom 1, 2 19 Sign up or log in Sign up using Google. Sign up or log in Sign up using Google. Select all convert -units PixelsPerInch image -density resultimage.

Secondly, DPI should not be confused with resolution. Convert to dpi Questions and postings pertaining to the usage of ImageMagick regardless of the interface. Convert image with imagemagick command convvert convert tool Ask Question.


Email Required, but never shown. Your fatal flaw was the initial assumption: How can I convert any image to dpi? Thanks for any help in this. It is just a hint which a printing or rendering device or an application may or may not follow when printing, rendering or displaying the image.

convert image 75 dpi to dpi – ImageMagick

Nov 28 ’16 at As such their use is confusing. Select all convert rose1. Super User works best with JavaScript enabled.

DPI is only meaningful if rendered to devices. Also, ImageMagick does not support ‘printing’ as such. The ImageMagick version is 6.

For example, following is a C program compilable via gcc setRes. Under what conditions do you need to have -units first other than for vector images? IT isn’t a problem that the quality will deteriorate, because the image is needed just for the process of making the document not for the document itself.

Does -resample use a different algorithm for scaling from -scale?


Specify the units – I seem to remember having a problem when I omitted this option although DPI should be the defaultfor example:. So there actually was no effect at all. That is to “deep” knowledge for me to be useful. Since ImageMagick is known to be superb and I used it for many other tasks I tried to achieve my goal inagemagick this tool. Also, it is straightforward to write GIMP scripts to automate tasks like this, and also it is possible to change resolutions with small programs.


If you answer questions just by title you are not a help to anyone here. The OP should have chosen the heading: But when I now render my TeX with pdflatex the image is still big and blurry. Stack Overflow works best with JavaScript enabled.

Rui F Ribeiro 39k 14 79