modify the picture resolution

[Frédéric Vailleau]

Hi there,
I tried to reduce the resolution of an image from 300dpi to 72dpi but I
didn't succeed ...
I can use the imagecopyresampled() function to modify the width and height
of my image but I can't modify the resolution.
Any help ??
TIA
Fred

[BKDotCom]

I've never used the GD library, but on quick look, it doesn't appear to
handle any file formats that maintain a "resolution". There is no
DPI... only dimensions: X pixels, by Y pixles. You can resize the
image though.

[Kenneth Downs]

Frédéric Vailleau wrote:

Hi there,
I tried to reduce the resolution of an image from 300dpi to 72dpi but I
didn't succeed ...
I can use the imagecopyresampled() function to modify the width and height
of my image but I can't modify the resolution.
Any help ??
TIA
Fred

if you are on linux, the 'convert' command is super-cool. do convert --help
to see the options.
--
Kenneth Downs
Secure Data Software, Inc.
(Ken)nneth@(Sec)ure(Dat)a(.com)