In OS X Apple have again changed the way that 2 pdf files merge in the free OSX Preview App. To Merge 2 pdf files in OS X Mojave you need to drag the thumbnails of one pdf file into the thumbnail view of the second pdf file. You can’t drag a pdf file directly from the desktop into the new thumbnail window or the files will not merge.
The “Create Booklet” PDF action stopped working when Mojave was released. It seems to be to do with Apple requiring an increased level of application signing. What this means is that the old version of Create Booklet (that was free) that I wrote about here no longer works. You need to download the new version from the Apple App Store. (It costs $20). I’m not sure if it’s worth $20 just to be able to make a booklet. It may be worth it to you. In my opinion it should be a feature that the built in OSX print driver can do. But for now I cannot find any free options to do this.
As I mentioned in this post Apple regularly change the way to merge a PDF document. Yet again it’s changed with High Sierra – for the better. Now when you drag a pdf onto the thumbnail window of an existing pdf the two documents will ALWAYS merge. This make it easier than ever to merge 2 pdf documents. Here’s how to merge 2 documents in High Sierra.
If you’ve ever been given a pdf file that you want to edit, or a pdf form that you need to complete and return electronically, you’ll realise that it’s not obvious how to edit a pdf file in OS X. You can make simple changes to a pdf file using the free built-in Preview App that comes free with OS X. Here’s how.
Apple’s built in pdf reader app called ‘Preview’ can merge 2 PDF files and edit PDF files. In macOS Sierra 10.12 all you need to do is drag the thumbnails that you want to merge from one PDF document to the other and then save the document.
Read on for some screenshots of what this looks like.
This might be a bit obscure, but if you ever need to do it then this will save you a lot of time! Today I had 33 separate pdf files that I wanted to print out. I wanted them all printed out in alphabetical order. It took me 3 attempts. Here is how to get them to open in Preview in alphabetical order first go so you can print them in bulk.