Legacy ImageMagick Discussions Archive

Hello,

I'm trying to resize an image by adding a white band on the top of the image.
My original is a usually a square of 4000x4000.
The expected result is an image of 336x420 with the ogirinal in 336x336 on the bottom and white back on the top on 336x84.

I have written this command using documentation and other command I found on internet :

Code: Select all

magick convert test.jpg -resize 336x420 -background white -gravity south -extent 336x420 testconvert.jpg

I'm facing this error :

Code: Select all

convert: invalid argument for option '-extent': 336x420 testconvert.jpg @ error/convert.c/ConvertImageCommand/1575.

I don't understand why because all examples I found with -extent option are having the same kind of parameter.

My current Image Magick version :

Code: Select all

Version: ImageMagick 7.0.8-21 Q16 x86_64 2018-12-28 https://imagemagick.org

Many thanks by advance for you help,
Regards

What version of IM, on what platform?

For IM v7, I suggest you use "magick", not "magick convert". But that isn't the problem.

I don't see why you get that error from that command. You will get it from this faulty command:

Code: Select all

magick convert test.jpg -resize 336x420 -background white -gravity south -extent "336x420 testconvert.jpg"

It could also happen if the space between "336x420" and "testconvert.jpg" wasn't actually the space character.

Hello Snibgo,

Thanks for you answer.
It seems that one of the spaces was KO. I have removed the spaces and rewrite them and the command is now working:
I have also remove the convert :

Code: Select all

magick test.jpg -resize 336x420 -background white -gravity south -extent 336x420 testconvert2.jpg

Thanks for the tips,
Regards,

Legacy ImageMagick Discussions Archive

Convert with extent option

Convert with extent option

Re: Convert with extent option

Re: Convert with extent option