How to Use DENSITY setting BEFORE Vector Designation

[jpeni]

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"

[fmw42]

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.

Code: Select all

FOR /R %a IN (*.eps) DO convert -density 300 "%~a" -depth 8 -threshold 40% -alpha off  "%~dpna.png"

[jpeni]

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.

[snibgo]

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.

[jpeni]

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.