Everyday tasks
How to split one big scan into separate documents
By DeckleUpdated
To split one big scan into separate documents, open Split PDF, keep Choose split points, click the scissors after the last page of each document, then choose the Create button, which shows how many PDFs it will make. Each document becomes its own PDF, and you can download them one by one or as a ZIP. The original scan is not changed.
How to split a scanned batch with Deckle
- Open Split PDF and choose the scanned PDF, or drop it onto the page. Deckle shows a thumbnail of every page.
- Under How to split it, keep Choose split points. Split PDF starts with one split after page 3; click its scissors to remove it if your first document does not end there.
- Find the last page of the first document and click the scissors between it and the next page. A coloured bar under each page shows which file it goes into.
- Repeat at every point where a new document starts. Click a scissors again to remove a split.
- Check the Planned files list. Use the eye button on a planned file to preview its pages.
- Choose the button, such as Create 5 PDFs.
- Download each document, or all of them as a ZIP, and rename them.
The result screen tells you how many PDFs were made from how many pages, so a missing split is easy to spot.
Find the breaks quickly
A batch scan from a document feeder puts letters, forms and receipts one after another in a single file. The first page of each document is usually easy to see in the thumbnails: a letterhead, a form title or a logo. Work through the thumbnails from the start, cutting before each first page.
Example: a 23-page scan holds a 3-page bank letter, a 1-page council tax bill, a 12-page insurance policy, a 2-page payslip pair and a 5-page medical report. Split after pages 3, 4, 16 and 18 and you get five PDFs of 3, 1, 12, 2 and 5 pages.
When another mode is quicker
| The scan holds | Use |
|---|---|
| Documents of different lengths | Choose split points |
| One-page documents, such as receipts or letters | One file per page |
| Forms that are all the same length, such as 4-page claim forms | Fixed-size chunks, with Pages per file set to 4 |
| A few documents you need, with the rest to ignore | Page ranges I choose; pages outside every range are left out |
Undo and Reset split options work on split points, modes and ranges until you create the files.
Fix the scan before or after splitting
Scanners often add problems along with the pages:
- Blank pages. Duplex scanning adds a blank back for every one-sided sheet. Remove them in Organize PDF pages before splitting, so they don't end up at the end of each document. See how to delete pages from a PDF.
- Sideways or upside-down pages. Turn them in Rotate PDF, choosing This page for single pages.
- Pages in the wrong place. A sheet fed out of order can be moved in Organize PDF pages before you split.
Doing these fixes on the whole batch first is usually quicker than fixing each document afterwards.
Name and file the documents
Split files are named after the source with a number, such as scan (1).pdf, scan (2).pdf. Rename each one after downloading, with a date and a description, such as 2026-03-insurance-policy.pdf. A consistent pattern makes the files easy to sort and search in a folder.
If you scan your post regularly, keep one folder per year and add documents as you split them.
Tips
- Use split points for most batches. They let you cut exactly where you see the change, without typing numbers.
- Preview before creating. The eye button on a planned file shows its pages, which catches a cut one page too early.
- Download as a ZIP for big batches. The result screen offers all files in one ZIP. A ZIP holds up to 2,048 files.
- Keep the full scan until you have checked the parts. If a document turns out to be split in the wrong place, you can plan the split again from the original.
Other ways to split a scan
- Scan documents one at a time. Most scanner apps can save each document as a separate PDF, if you stop between documents. That suits small batches.
- Print a page range to PDF. Print dialogs on most computers and phones can save selected pages to a new PDF, one document at a time. See how to split a PDF on Windows.
Frequently asked questions
Can I split a scanned PDF into separate files automatically?
Split PDF cuts where you tell it to. It does not detect document breaks on its own. For one-page documents, One file per page does it in one step.
Does splitting reduce the scan quality?
No. Each part is a copy of the source pages, so the scanned images are not recompressed.
Can I split a scan on my phone?
Yes. Split PDF runs in the mobile browser on iPhone and Android. See how to split a PDF on iPhone and iPad.
What if I put a split in the wrong place?
Click the scissors again to remove it, or use Undo. Nothing is created until you choose the button.
Related tools
- Split PDF to cut the batch into documents
- Organize PDF pages to remove blank pages and move sheets first
- Rotate PDF to turn sideways scans