Split a PDF in Half, or Cut Every Page in Two
or drop files here
Divide the document into two files at a page you choose, or slice each sheet into a left and right (or top and bottom) page. Nothing is re-rendered, and the file is handled entirely on your device.
Pick the half, check the line, save.
Open the PDF
Drop in the long report, the scanned book or the sheet of duplicated forms. A password-protected file asks for its password once, inside this tab.
Choose what gets halved
The document gives two PDFs with a split point you can move. Every page cuts each sheet left and right or top and bottom, with the cut line drawn on page 1.
Save the result
Two halves of a document arrive as a ZIP of two PDFs. Cut pages come back as one PDF with twice the page count, already in reading order.
Two pages on one sheet, or one file too many.
Halving comes up in two quite different shapes: a sheet that really holds two pages, and a document that would be easier to handle as two. Both are covered here.
Scanned books and notebooks
Flatbed scanners and phone scanning apps often capture two facing pages in one image. A left and right cut turns each spread into two single pages that read comfortably on a phone or e-reader.
A3 scans into A4 pages
A landscape A3 sheet is exactly two A4 pages side by side. Cutting it down the centre gives two A4-sized portrait pages that print on an ordinary office printer at full scale.
Two-up printouts
Notes or slides printed two to a sheet, side by side on landscape paper or stacked on portrait paper, can be cut back into one page each for reading on screen.
Two copies on one sheet
Offices often print a slip, receipt or form twice on one page to save paper, and tickets or shipping labels come two to a sheet. A top and bottom cut gives each copy its own page to file or forward.
Right-to-left books and manga
In Arabic, Hebrew and Urdu books, and in manga, the right-hand page comes first. Turning on Right half first keeps the order correct after the cut, so the story does not run backwards.
Halving a long document
When a reviewer or an upload form wants shorter files, two PDFs divided at a chapter break are often enough. If the rule is a size in megabytes rather than a page count, a size-based split suits it better.
How a page is cut without being redrawn.
Every PDF page carries a CropBox, the rectangle a viewer actually shows. In Every page mode the tool makes two copies of each page, sets the CropBox of the first over one half and the CropBox of the second over the other half. The drawing instructions, fonts and scanned images underneath are left alone, so each new page is exactly as sharp as the source and there is no rendering step to wait for.
Both copies of a page point at the same stored content, which is why a scanned book does not double in size when its page count does.
The cut is worked out from the page as you see it. When a page is stored sideways and turned upright by a rotation setting, left, right, top and bottom still mean what they look like on screen, and the halves are put in reading order. The line always sits at the exact centre of the visible page, so if the spine of a scan is off to one side, trim it with Crop PDF first and the cut will follow the trimmed page.
One honest caveat: a crop window hides the other half, it does not delete it. Text search, copying all text, or an editor that resets page boxes can still reach it. When the halves go to different people, say two employees' payslips printed on one sheet, run Flatten PDF with the Image-only option on the result, so only the visible half survives.
Halving the document itself is simpler still: the page list is divided at your split point and each side is copied into a new PDF unchanged. If what you need is to stay under a megabyte cap rather than a page count, Split PDF by Size measures the parts for you, and Split PDF handles any other set of page ranges.
Hatched area: hidden from view, but still inside the page data.
Which setting do I need?
| Your file | Choose |
|---|---|
| Book or notebook scanned two pages at a time | Every page, Left and right |
| Manga, or a book in Arabic, Hebrew or Urdu | Every page, Left and right, Right half first |
| Landscape A3 scan holding two A4 pages | Every page, Left and right |
| Handout with two slides stacked on a portrait sheet | Every page, Top and bottom |
| Two copies of a form, ticket or label on one sheet | Every page, Top and bottom |
| Long report to send as two files | The document, split point at a chapter break |
| An upload limit given in MB | Split PDF by Size |
Questions answered.
Should I halve the document or cut every page?
Where does the document split by default?
Does cutting pages lower the quality?
The spine of my scan is not in the middle. What can I do?
In what order do the halves come out?
Can I cut a one-page PDF?
Is the hidden half really gone from each page?
What happens to a cover that was scanned on its own?
Is my file uploaded?
More tools you might need.
Related Guides & Tutorials
How to Repair and Recover Corrupted PDF Files That Won't Open (Recovery Guide)
Why PDFs get damaged, how to tell whether a broken file can be saved, and how to rebuild a missing cross-reference table or end marker to get the pages back.
How to Convert CMYK PDF to sRGB for Web and Social Media Sharing (True Color Guide)
Why a print-ready CMYK PDF looks off on screens and social media, and how to convert it to sRGB in InDesign, Illustrator, Acrobat Pro or Ghostscript, or export the pages as images.
Why Is My Printer Printing PDF Pages in Landscape Instead of Portrait? (Orientation Fix)
Why portrait PDF pages print sideways: automatic orientation, a landscape driver default, two pages per sheet, or a rotated page in the file. Fixes for Acrobat, Chrome, Preview and Windows.