Do you have multiple PDFs you need to merge into one? Making one PDF out of many is easier than you might think on both Windows PCs and Macs. Here's how to do it on each platform. I've been writing ...

Mac OS X only: Free utility Combine PDFs does just that - it merges multiple PDF files into one. Drag and drop your PDF's onto its interface, which lets you rearrange and rotate files. When would you ...