You can open a PDF in Preview, then add, delete, and rearrange pages, or move pages from one PDF to another.
How to Remove Page Breaks. You can remove page breaks you've added and also adjust where Word's automatic page breaks appear. To remove a manual page break: 1. A File Opens With on Your Mac. I phoned Apple Support who resolved it and removed Bing from re-directing my search engine away from Google. They installed Malware Bytes for Mac (which Apple have approved to use) which found the files within 10 seconds, deleted them and restarted mac and bingo. All good now. Worked for me and hopefully works for you 😀.
How To Remove A Manual Page Break Mac 10.14 10
In the Preview app on your Mac, open the PDF you want to change.
Do any of the following:
Add a page to a PDF: Select the page you want to appear after the new page, choose Edit > Insert, then choose Page from File or Blank Page.
The new page is inserted before the current page.
Delete a page from a PDF: Choose View > Thumbnails or View > Contact Sheet, select the page or pages to delete, then press the Delete key on your keyboard (or choose Edit > Delete).
When you delete a page from a PDF, all the annotations on the page are removed as well.
Move pages in a PDF: Choose View > Thumbnails or View > Contact Sheet, then drag the pages to their new location.
Copy a page from one PDF to another: In each PDF, choose View > Thumbnails or View > Contact Sheet, then drag thumbnail images from one PDF to the other.
You can also create a new PDF by dragging thumbnails from a PDF sidebar to the desktop.