Split PDF Down the Middle
Split 2-up scans (book spreads, A3 layouts) into single-page PDFs down the middle.
Split 2-up scans (A3 → double A4, A4 → double A5) down the middle into single pages — free in your browser.
Calculator Inputs
About Split in Half
Split 2-up scans (book spreads, A3 layouts) into single-page PDFs down the middle.
Upload a 2-up PDF and choose vertical (left/right) or horizontal (top/bottom). Each page becomes two half-size pages; content is cropped, not re-rendered. Text stays selectable.
Processing uses the pdf-lib writer loaded from CDN, but your file never leaves the browser.
Where it is used
Book scans, A3→A4 office scans, 2-up presentation handouts, newspaper scans.
How to use the Split in Half
- Select PDF — select a file (application/pdf,.pdf) — PDF up to 50 MB. Files never leave your browser..
- Split Direction — enter the value.
- Calculate — press the Calculate button to see the result instantly above.
Formula
Each page → two half-size pages (left/right or top/bottom) via embedded page draw with offset.
Examples
Example
direction:vertical
Result: Split PDF in half (after selecting a PDF)
Frequently Asked Questions
- Will text stay selectable?
- Yes — pages are embedded and cropped, not rasterized.