How do I insert a blank page or a divider into a PDF?

Adding an empty page sounds like a small job, but people need it all the time, for four quite different reasons.

Why people need one

Double-sided printing. A section that must start on a right-hand page needs the previous section to end on a left-hand one. When it does not, a blank page goes in between. This is why printed books have those "this page intentionally left blank" sheets. They aren't mistakes. They keep each section starting on the right side.

Separating merged documents. When several PDFs are combined into one, you can't see the joins, so the reader can't tell where one document ended. A blank sheet, or better one with a heading typed on it, makes the structure clear.

Room to write. Forms, worksheets and meeting packs often need a page for notes, signatures or a stamp that the original does not have.

Fixing a numbering plan. Adding a page shifts everything after it. Sometimes that is exactly what you need, when a document has to line up with an index kept somewhere else.

Where to put it

Position is the part people get wrong. "Insert at page 5" can mean before or after the current page 5, and they are different documents.

Add Blank Page inserts *before* the page you name, so inserting at 5 makes the new sheet the fifth page and pushes the old fifth to sixth. If you want it after, name the next page.

The blank page matches the size and orientation of the document it joins, so it prints on the same paper as everything else.

Then write on it

A blank page is rarely the end of the job. Once it is in, you can add a section heading, a note or a signature block with the PDF editor, and the empty sheet becomes a proper divider.

The related jobs

If you are inserting several blanks to make sections start on the right, do it after merging, because the positions change once the documents are joined.