Multipage .pdf file creation

[asterroc]

I have 24 .png files that I want to wrap into a single 24-page .pdf file without losing image resolution (as I would if I pasted the .png files into 24 pages of a Word document and then .pdf printed on my Mac). Any way I can do this for free and legally? I currently have access to both PC, Mac, and linux on a very slow computer; I have a slight preference for Mac.

Comments

[zandperl.livejournal.com]

Zamzar requires individual selection of files, so I might as well use Preview. And then Automator appears able to concatenate .pdf files. (Unfortunately neither Automator nor Preview can .pdf print a group of separate files so far as I can tell.)

Thanks!

Edit: Automator does combine .pdf pages, but I can't find an option to SAVE the combined pages. It appears to combine the pages and NOT output a new file in any fashion. Any clue?