Re: [GD-DEVEL] Defining JPG DPI and Bit Depth Parameters

Hello Miguel,

On 1/18/07, Miguel Maldonado <[email protected]> wrote:
> Thanks for the prompt response.  I will take the liberty to shoot a
> couple of more questions:
>
> 1)  Does gd support Tif images, If not are there plans to add this
> feature ?

Not yet, I have a patch for the initial TIF support. That reminds me
to add it in the issue tracker.

> 2) Is there a way to calculate the appropriate pixel dimensios of a
> jpg image by for a particular file size.  For example I would like to
> resize all images in a folder to 20 KB.

That's not an easy task, the compression ratio depending on the
contents of the image. I remember someone having written a class in
PHP to create jpeg images with a maximum size. It is certainly
possible to port it to C. The class was release on phpclasses.org.

Cheers,
--Pierre