Re: Generate thumbnails

[Marc Shapiro <mshapiro_42@yahoo.com>]

kamaraju kusumanchi wrote:

> Craig M. Houck wrote:
>
> > Hey;
> >
> > What is any easy to use program to generate thumbnails from a 'full 
> > sized'
> > image?
> >
> > I have tried many programs found using apt-cache search BUT either I 
> > am to
> > stoopid to figure them out or they really don't do what I want.
> >
> > Fore xample:
> > convert image.JPG -resize 10% images.jpg complains.
> >  
> To create thumbnails use the -thumbnail option of convert. This option 
> preserves the aspect ratio of the picture. So you need to specify just 
> the width or height of your thumbnail.
>
> Sample commands look like
>
> convert -thumbnail 160 original.jpg thumbnail.jpg
> convert -thumbnail x160 original.jpg thumbnail.jpg
>
> The first one creates the thumbnail whose width is 160 pixels. The 
> second one creates a thumbnail whose height is 160 pixels.
>
> Ref :- Linux Multimedia Hacks - Tips & Tools for taming images, audio, 
> and video by Kyle Rankin
>
> hth
> raju
The -thumbnail option does not appear to be needed.  I just use the 
following command:

convert original.jpg -resize 130x130 thumbnail.jpg

This gives me a thumbnail with the largest dimension being 130 and the 
other dimension proportionally smaller.  This way, I know that the image 
will fit in a 130x130px box regardless of its original size and 
orientation.  My 400x600 original picture is resized to 87x130.

--
Marc Shapiro
mshapiro_42@yahoo.com