Aha! Exactly what I wanted!!  Thanks!!!

On Fri, 18 May 2007 16:57, you wrote:
> Andrew Errington wrote:
> > Hello,
> >
> > What is the best tool for editing the dpi information in a JPG image? 
> > I have resized the original with ImageMagick, and the EXIF dpi is 72 in
> > X and 72 in y.  I want to edit these values to be 300 dpi in both axes.
> > ImageMagick will print out the EXIF values, and I have found some
> > utilities to edit the EXIF fields, but they only seem to allow editing
> > of the 'coventional' fields like date and time, title, copyright string
> > etc.
> >
> > Thanks in advance,
> >
> > Andrew
>
> The -density option to convert specifies the resolution in dpi, unless
> you change the units with the -units option
>
> Stephen
>
>
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