Split PDF Pages in Half (one scanned spread into two pages)

How it works

Tap or click the box to pick the document, then choose where to split. The most common case is a book or notebook scanned open on a copier or with a phone app, two pages side by side in each shot: a 100-page book fits into 50 landscape scans, but on a phone each scan shows two tiny pages. Splitting down the middle turns every scan into a left and a right half; 50 scans become 100 portrait pages in the order left, right, left, right. For a book read right to left, such as Arabic, Hebrew or Persian, choose "right half first" and the order comes out correct. Covers are usually scanned as single pages; to avoid cutting them in half, choose "keep the cover whole" or "keep front and back cover whole". Splitting across the middle separates the top and bottom halves instead, which suits scans of two half-letter forms printed on one sheet. The tool adjusts the visible area of each page; nothing is redrawn, so the scan quality is unchanged and any text stays selectable. On rotated scans, "left" means the left you see on screen. The result line reports how many pages were split. The file never leaves your browser.

This tool is also known as split pdf pages in half, split scanned book pages, split double page scan pdf, split pdf page down the middle, separate two page spread pdf, halve pdf pages.

What is Two-page spread scan?

A spread scan captures a book or notebook lying open, both facing pages in one image. On a copier, and in phone scanning apps, it is the fastest way to digitize a book: you open it once and capture two pages instead of turning and scanning each page separately. The result is a PDF page wider than it is tall. For reading on screen, printing or quoting page by page, each half needs to become a page of its own.

What is Visible area (crop box)?

Every PDF page has a visible area; viewers and printers show only what lies inside that box. This tool copies each scan twice and sets the visible area of one copy to the left half and of the other to the right half. Nothing is redrawn, so there is no loss of quality. The flip side is that the hidden half is not deleted from the file; it only lies outside the box and can be made visible again in a PDF editor.

What is Right-to-left reading order?

Books in right-to-left scripts such as Arabic, Hebrew and Persian also open from the right: in an open book the right-hand page is read before the left-hand one. Split such a spread left to right and every other page lands in the wrong place, scrambling the text from start to finish. The "right half first" choice puts the right half of each scan ahead and keeps the reading order intact.

The hidden half stays in the file — know this before sharing

This tool does not physically cut the page; it narrows the visible area of each scan. On screen and on paper only the chosen half shows, but the other half is still inside the file. That is also why the file does not get smaller: every scan is used on two pages, so the page count doubles while the file size stays about the same.

Most of the time this does not matter, but in one case it is critical: if you want to share only half of a page and hide the other half, this tool is not enough. The hidden half can be brought back by widening the visible area in a PDF editor. To truly remove a half that carries personal information, export the page as an image and crop it.

For the same reason, compressing the file after splitting does not delete the hidden half. For reading, printing or quoting a book page by page, though, this is the cleanest way to split: the scan is not recompressed and quality does not drop.

Which setting suits which scan?

If the book's spine falls exactly in the middle of the scan, splitting down the middle gives two even halves. If the book slid during scanning, the gutter may be off-center; the tool always splits at the exact middle, so centering the book on the glass is what decides the result.

Front and back covers are usually scanned as single portrait pages. Splitting them produces half a cover; "keep the cover whole" or "keep front and back cover whole" leaves those pages as they are. If you scanned the cover into a separate file, "split every page" is all you need.

Splitting across the middle is meant less for books than for forms: scans where two half-letter forms were printed one above the other, or two copies of a receipt stacked on one sheet, become separate pages for the top and the bottom.

• Book or notebook in a left-to-right script: down the middle · left half first
• Arabic, Hebrew or Persian book: down the middle · right half first
• Cover scanned separately: split every page · cover inside the scan: keep the cover whole
• Two half-letter forms on one sheet: across the middle

Frequently asked questions

How do I split a two-page book scan into single pages?

Select the scanned PDF, keep "down the middle — left half first" and press the button. Every scan becomes two separate pages: a PDF of 50 scans turns into a 100-page document. The result line shows how many pages were split.

Is this the same as splitting a PDF?

No. Splitting a PDF breaks one file into several files by page groups and leaves the pages untouched. This tool produces a single file but cuts each page into two pages. To break a document into several files, use the PDF split tool.

Does the file get smaller?

No, it stays about the same. Each scan is used on two pages and the hidden half is not removed, only made invisible. To make the file smaller, run the PDF compression tool after splitting.

What about the shadow of the book's spine?

The tool splits at the exact middle and leaves the image untouched, so the spine shadow stays as a thin strip along the inner edge of both halves. Pressing the book flat on the glass and centering it during scanning keeps that strip to a minimum.

Does it work on password-protected PDFs?

No. If a file asks for a password, the tool stops and says so. Save an unprotected copy from a program that opens the document and use that copy.