How to remove blank pages from a PDF on a Mac
By Himanshu Ranjan · Updated 8 November 2026
To remove blank pages from a PDF on a Mac, select it and run Organize › Remove blank pages in FileDial, which writes a new copy beside the original. In Preview you can delete them by hand in the thumbnail sidebar. Always scan through the result to check no real page was dropped.
Where blank pages come from
Blank pages usually come from scanning. A duplex scanner scans both sides of every sheet, so single-sided paper produces a blank back for every page. A stray extra sheet in the feeder, a separator sheet between documents, or a document exported with a blank page at the end of each section all add pages nobody wants.
They cost more than a glance. They add to the page count, waste paper if printed, and make a file harder to read. Removing them in bulk is one of the most common clean-ups after scanning a stack.
Remove them with FileDial
Organize › Remove blank pages finds blank pages and writes a new PDF without them.
- Select the PDF in Finder, or several.
- Hold the right Option key to open the dial and choose the Organize category.
- Release on Organize › Remove blank pages.
- Open the new copy and compare the page count with the original.
- Scan the thumbnails for any page that should have stayed.
Check the result
Automatic detection has to decide how blank is blank. A scanned blank page is never perfectly white: it has dust, paper texture and sometimes faint show-through from the other side. A page with only a small mark, such as a page number, a signature line or a stamp, may or may not count as blank. That is why you should look at the result rather than trusting it.
A useful method is to note the original page count and the number removed. If you expected about thirty blanks and the tool removed three or ninety, something is off. Intentionally blank pages, such as one that says this page left blank, are another case that might disappear, so check documents that rely on page positions.
- Compare page counts before and after.
- Look for pages with faint content that were removed.
- Look for blanks that survived because of noise.
- Check documents that need fixed page positions.
Remove by hand in Preview
Apple's steps: choose View › Thumbnails or View › Contact Sheet, select the pages, and press the Delete key or choose Edit › Delete. Contact Sheet shows many pages at once, which makes blanks easy to spot. Command-click to select several. Save the file under a new name if you want to keep the original.
If you have a handful of blank pages, Preview is quick. If you have hundreds, the automatic tool saves you real time, and you can finish by deleting any stragglers with Organize › Delete pages…
Fix the cause
If blanks appear on every scan, change the scanner setting. Many scanners have a skip blank pages option in their software; turning it on stops the problem at the source. If your scanner does not, scan single-sided paper in simplex mode instead of duplex.
If you do need both sides, and the fronts and backs came out as two files, see our guide to interleaving fronts and backs. And after cleaning, run OCR › Make searchable so the cleaned file can be searched.
A worked example: a 60-page duplex scan of single-sided letters
You scanned 30 single-sided letters on a duplex scanner and got 60 pages, every second page blank. Run Remove blank pages, open the copy and see 30 pages, or close to it. If the count is 31 or 29, find out why: a letter with a blank back might have had a pen mark, or one with a nearly empty page may have been dropped.
Fix the exceptions by comparing against the original: delete a leftover blank with Organize › Delete pages…, or bring back a dropped page by extracting it from the original with Organize › Extract pages… and adding it back with Combine › Merge PDFs. A count check takes seconds and prevents the quiet loss of a real page.
Deleting from the only copy is the main one: always keep the original scan until you have checked. Running the tool before straightening can matter, since a tilted page with shadow edges looks less blank than it is. Not checking the first and last pages is common, because cover sheets and trailing separators are the usual blanks. And discarding the paper before the scan is verified is the costly one; keep the stack until you have read through the result.
Related clean-ups for scans
Scans often need more than one fix. OCR › Straighten scanned pages… straightens tilted pages. The rotate tools fix sideways ones. Pages › Crop margins trims white borders. Compress › Compress PDF reduces large image data. A routine of delete blanks, straighten, rotate, make searchable, compress gives a tidy, small, searchable file.
Stacks of scans are bills, IDs, medical papers and contracts. Cleaning them locally avoids uploading the lot. FileDial writes a new copy and leaves the original scan untouched.
Questions
Why are there blank pages in my scanned PDF?
Duplex scanners scan both sides of every sheet, so single-sided paper gives a blank page after each real one. Separator sheets and stray sheets in the feeder add more. Turn on skip blank pages in the scanner software, or scan in simplex mode.
Will Remove blank pages delete a page with a little text on it?
Detection has to judge how blank a page is, and a page with only a faint mark, such as a page number, may be judged blank. Compare page counts and scan the thumbnails of the result, and restore any page that should remain from the original.
Can I remove blank pages without any software on a Mac?
Yes, by hand. Open the PDF in Preview, show View › Contact Sheet or Thumbnails, select the blank pages, press Delete and save. That is fine for a few pages, though for stacks of scans an automatic tool is much faster.