With Mountain Lion (OSX 10.8) Apple have made it even simpler to join two pdf files together – you just need to drag any pdf file into the thumbnail window of an existing pdf file and the two will be merged together! This is a simple 4 click process… (1) Open the first pdf file, (2) Open the thumbnails draw (3) Drag in the second pdf file and (4) Save the new pdf. Here are some pictures to help you do it!
- To make a new pdf preserving the original one use ‘Duplicate’ then ‘Save’.
- To copy only one page, open the second pdf page in thumbnail view and drag just one page across.
- This does not work with protected pdf files. (Protected pdf files are not common.) If a pdf file has been locked by the author you cannot change it without a password.
- It’s a little more complicated on older versions of OSX (eg Leopard, Snow Leopard and Lion) because the exact location that you drop the new pdf makes a difference - see this post for how to merge pdf files in Leopard, Snow Leopard or Lion (10.5,10.6 and 10.7)