Stitch images together

[Gregjazz]

I'm looking for a graphics utility that can stitch multiple images together into one, vertically or horizontally. I've been using Trentstitch, but that only supports BMP files. I also have a mysterious little program called "masker" that can stitch images together. However, the problem I'm using PNG files because I'm using the alpha channel. "Masker" doesn't get the alpha channel.

Any ideas?

[Andail]

What about just increasing the canvas size in, for instance, Photoshop and paste in the new picture?
I don't see why you'd need a brand new application for this task?

[Gregjazz]

What about just increasing the canvas size in, for instance, Photoshop and paste in the new picture?
I don't see why you'd need a brand new application for this task?

It'd take a while to do that for 100+ images.

However, I just found something that works with PNGs (and is actually created for my specific purpose):

pngStitch:

http://www.niallmoody.com/otherprograms.htm

[Andail]

Oh, I see. I didn't know you were talking about that many pictures.
Nice program you've found there.

[Gregjazz]

Yup, and it's open source, too!

[Ali]

Using the 'Automate > Photomerge' function in Photoshop might work, but it would probably be slow for over a hundred images. I thought it worth mentioning that for people who have Photoshop, but can't afford free open source software...

[Phemar]

You could try Hugin I suppose.