[magick-users] newbie: output to GIF/JPG file based on given size

[Nguyen Vu Hung]

On Tue, Nov 18, 2008 at 3:44 PM, Fred Weinhaus <fmw at alink.net> wrote:
> convert input.jpg -quality xx output.jpg
>
> see http://www.imagemagick.org/script/command-line-options.php#quality
>
>
> See:
>
> http://www.imagemagick.org/script/command-line-options.php
> http://www.imagemagick.org/Usage/
>
>It is a trade-off between filesize and image quality.

As far as I can tell, for JPEG files, by setting -quality 70-100, the
filesize and its quality
change won't be noticeable. However, if you lower more JPEG's "-quality",
we might get smaller filesize but there should be some "perceptional" loss.

The OP may be interested in "-quantize" option and test the images with
his output devices( LCD?, Mobile?, PDA or iPhone?)




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Nguyen Hung Vu ( Nguyễn Vũ Hưng )
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