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title Split Modes
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Split Modes

Batch Split PDFs splits a single PDF into multiple smaller files. The Pages per file setting controls how the split works.

Page-by-page split (pages per file = 1)

Set Pages per file to 1 to extract every page as its own file.

A 12-page PDF becomes 12 files:

document_001.pdf   ← page 1
document_002.pdf   ← page 2
...
document_012.pdf   ← page 12

This is useful for:

  • Extracting individual slides from a presentation PDF
  • Separating scanned documents that were merged together
  • Preparing individual pages for upload or sharing

Chunk split (pages per file = N)

Set Pages per file to any number greater than 1 to group pages into fixed-size chunks.

A 50-page PDF split into 10-page chunks becomes 5 files:

document_001-010.pdf   ← pages 1–10
document_011-020.pdf   ← pages 11–20
document_021-030.pdf   ← pages 21–30
document_031-040.pdf   ← pages 31–40
document_041-050.pdf   ← pages 41–50

If the total page count is not evenly divisible, the last chunk contains the remaining pages:

document_001-010.pdf   ← pages 1–10
document_011-020.pdf   ← pages 11–20
document_021-023.pdf   ← pages 21–23  (3 pages remaining)

Output file naming

Output files are named using the source PDF filename (without extension) plus a zero-padded chunk number or page range:

Pages per file Example output names
1 report_001.pdf, report_002.pdf, …
10 report_001-010.pdf, report_011-020.pdf, …
25 report_001-025.pdf, report_026-050.pdf, …

Zero-padding ensures files sort correctly in filename order in Windows Explorer.

Live preview

Before splitting, the app shows a live count of how many files will be created based on the current Pages per file setting and the total page count. This updates as you change the setting so you can experiment before committing. Live preview is available in Single PDF mode; in Folder of PDFs mode the app instead shows how many PDF files were found in the folder.

Splitting a folder of PDFs

Switch to Folder of PDFs mode to split every PDF in a folder in one run, using the same Pages per file setting for all of them. Check Include subfolders to also process PDFs nested in subfolders of the selected folder.

  • All output files, from every source PDF, are written into the single output folder you choose — there are no per-source subfolders.
  • If two source PDFs share the same filename (for example, two files both named report.pdf found in different subfolders), the app appends a number to one of their output stems (report_2_001.pdf) so their outputs don't collide.
  • A source PDF that fails to load or split (for example, if it's password-protected) doesn't stop the run — the app skips it, keeps processing the rest of the folder, and lists which files failed once it finishes.
  • The finishing summary reports total PDFs processed, total files written, and total pages split across the whole folder.