Not a major but a semi-annoying problem is that totally out of the blue all PDFs will start opening in Preview instead of Acrobat. All PDF file icons change from the PDF icon to Preview, as if the default program switches. Then it goes back by itself, for no apparent reason after I manually drag PDFs into Acrobat. Just happens randomly and I wonder why that is and how to prevent it, because it happens often enough to be a minor nuisance.
Mac – PDFs randomly open in Preview instead of Acrobat
macpdfpreview
Related Solutions
First, you can only merge pdf if they are not protected, if this is the okay :
- Open both pdf
- Enable the sidebar in each windows of Preview, then select "Thumbnails" view
- Drag & drop the cover (inside the sidebar) of one pdf into the sidebar of the other pdf.
With this method, you can completely merge two pdf or selectively drag & drop the pages you want to merge to create a completely custom new pdf.
You can also extract pages from one pdf still using the same manipulation, but drag & drop to the Desktop.
In 10.8 and later (but not in 10.7) there is a preference for the default view mode:
I don't know any way to change the default size or position of windows, but you can use an application like Slate, ShiftIt, or Moom to assign a keyboard shortcut for resizing a window to fill the right half of a screen.
Related Question
- Switching between open pdfs in Preview without losing your place
- Opening a pdf file from the command line
- MacOS – How to set Adobe DC PDF reader as default for ALL pdfs without having to open security preferences every time
- Preview randomly removing spaces between words
- Open PDF in browser or Preview instead of downloading
- Ugly math in preview of Wikipedia pdfs
- Preview for PDFs – Incorrect Pages are Bookmarked
Best Answer
Right click then select get info. open drop down that says "Open With" then change app.