Adding an empty page sounds like the most trivial edit imaginable, and it's surprisingly hard to do in most PDF readers. But the reasons you'd want one are real and specific:
- Double-sided printing. A section that must start on a right-hand page needs a blank inserted before it, or the whole booklet falls out of alignment.
- Section breaks. A deliberate divider between parts of a document.
- A notes page. Somewhere for the reader to write, after a form or a worksheet.
- A placeholder. A slot for a page that's coming later — a signature sheet, an exhibit still being prepared.
This guide covers inserting a blank page at any position.
The steps
Open Blackpdf's Organize PDF tool and drop your PDF in. Every page appears as a numbered thumbnail.
Click the gap where the blank should go. Hover in the space between two thumbnails and click — a small insert menu appears.
Choose "Blank page". An empty page slots in at that position, and everything after it shifts down and renumbers.
Repeat for as many blanks as you need — click another gap, insert another blank.
Click Save and download.
One thing to know: the blank page is A4
Worth being upfront about, because it can surprise you: inserted blank pages are A4 (595 × 842 points).
If your document is already A4 — which it is for most of the world — that's exactly right and there's nothing to think about.
If your document is US Letter (612 × 792 points), the inserted blank will be a slightly different size from the pages around it. On screen you will never notice. It only matters if the document is going to be printed, bound, or submitted somewhere that enforces a uniform page size. In that case, run the finished file through Resize PDF Pages afterwards to normalise every page to Letter — a few seconds of work that makes the whole document consistent. Our page sizes explainer covers why mixed sizes cause trouble.
Blank pages for double-sided printing
This is the classic use, and it's worth getting the logic right.
In duplex printing, odd-numbered pages land on the right-hand side of the spread and even-numbered pages on the left. So if a chapter must open on a right-hand page, it has to fall on an odd page number.
If your chapter currently starts on an even page, insert one blank page before it. That pushes it to the next odd number, and the blank becomes the (empty) back of the preceding sheet — exactly what a printed book does.
Check the thumbnail numbering after inserting: your chapter openers should all sit on odd numbers.
Common questions
Can I add a blank page at the very start or end?
Yes — the gap before the first thumbnail and after the last one both work. A blank first page is a quick way to add a cover placeholder.
How do I add several blanks in a row?
Insert one, then click the gap again and insert another. Each one slots in at the position you clicked.
Can I put content on the blank page afterwards?
Not in the organize view — it's a genuinely empty page. To put something on it, you'd add the content elsewhere (a watermark, or a page built in another program and converted to PDF) and then insert that page instead of a blank. Our adding pages guide covers inserting from another PDF.
Will my printed page numbers still be right?
The thumbnails renumber automatically, but numbers stamped onto the page are part of the content and don't shift. If your document carries printed page numbers, re-apply them after inserting with Add Page Numbers.
Can I remove a blank page later?
Yes — select it and delete it, either in the same organize view or with Delete PDF Pages.
Wrap-up
- Drop your PDF into Organize PDF.
- Click the gap where the blank belongs.
- Choose Blank page.
- Save and download.
Two things to remember: the inserted blank is A4, so resize afterwards if your document is Letter and uniformity matters — and for double-sided printing, a blank before a section pushes it onto the next odd page, where a right-hand chapter opener belongs.