PDF compression filters (Unzip and put in your Library folder).zip

The Compact Calendar is a versatile planning calendar that is easy to customize and print with Microsoft Excel. It comes in three different week styles, and is localized for different countries by volunteers around the world.

This program converts PDF documents such as articles, and academic papers into a PDF (or image sequence) so that it can be read on a small screen of e-book devices.

Get a second use out of your misprints with RePrint’s quarterly calendars!

PDF to Keynote converts PDF-based presentations (e.g., made using LaTeX with Prosper, Beamer or foiltex) into Apple's Keynote format.
Once translated into Keynote format, every page of your original PDF file becomes a PDF image, properly scaled and centered on its own slide. Although intended for presentations, you can also use it to create slides for the pages of regular documents.

More than 830 papers you can download and print for free. We've got graph paper, lined paper, financial paper, music paper, and mor

This hint provides information on modifying the OS X “Save PDF Web Receipts Folder” work-flow that’s attached to the print dialog, but it is for 10.4 only.

I Googled around a bit and found “Quality reduced file size in Mac OS X Preview from early 2006. There I discovered that anyone can create their own Quartz filters, which was the key I needed. Thus armed with knowledge, I set about creating a filter that struck, in my estimation, a reasonable balance between image quality and file size reduction. And I think I’ve found it. That 175MB PDF gets taken down to 34MB with what I created.

A framework for creating e-books from Markdown/Textile text markup using Ruby. Using the Prince PDF generator, you'll be able to get high quality PDFs.