density recompresses jpg
Posted: 2006-09-25T06:44:36-07:00
Hello all,
From the man page: reduces the file size by 10% and drops the quality accordingly. From looking at the pixel difference, I'm pretty sure there's a jpg recompression.
The same is true if I try to add a profile to an existing image: alters the pixel values.
It's so elementary that I must be doing something wrong. So, how do I change density/profiles/... without touching the pixels ?
From the man page:
... except that it doesn't work for me. The commandThe density option is an attribute and does not alter the underlying raster image
Code: Select all
mogrify -density 300 MultipleSummits.jpgThe same is true if I try to add a profile to an existing image:
Code: Select all
mogrify -profile AdobeRGB1998.icc MultipleSummits.jpgIt's so elementary that I must be doing something wrong. So, how do I change density/profiles/... without touching the pixels ?