Legacy ImageMagick Discussions Archive

It is recommended to use the -density option BEFORE the vector file format is specified in the command to preserve output quality. For example:

convert -density 300 "C:\Originals\File.eps" -depth 8 "C:\Previews\File.PNG"

This works for individual images, but how do you enter -depth options BEFORE specifying the vector format in the following recursive command?

FOR /R %a IN (*.eps) DO convert -depth 8 -threshold 40% -alpha off "%~a" "%~dpna.png"

Sorry I do not use Windows so this is a guess. But you need to read the input first apart from the density and put your other arguments after reading the input.

Thanks for your guess, but you did not use the -density option BEFORE specifying the VECTOR format. For vector graphics, ImageMagick has both a render resolution and an output size that are independent of each other so the density must be specified BEFORE the VECTOR format.

Fred's guess is correct. He had:

... convert -density 300 "%~a" ...

In the "convert" command, we specify the "-density" before reading the vector file, so the software that rasterizes the vector data will use that dpi.

Thanks. Now I recognize how Fred's placement of the "%~a" option placed the -density BEFORE the eps was specified.

Please: For those of us who need guidance - when you provide a suggested solution - please explain how your solution fixes the stated problem so we can understand.