Troubleshooting

Common issues and how to fix them.

The PDF page count shows as 0 or does not appear

  • Make sure the selected file is a valid PDF — try opening it in a PDF viewer first
  • Password-protected PDFs cannot be read; remove the password protection first
  • Very old or non-standard PDF formats may not be supported

Split fails for a specific chunk

  • The source PDF may be corrupted — try opening it in a PDF viewer and saving a fresh copy
  • If the file is very large, ensure you have enough disk space in the output folder
  • Try splitting a smaller range first to isolate which pages cause the issue

Output files are in the wrong order

Output files are named with zero-padded numbers (001, 002, …) so they sort correctly alphabetically in Windows Explorer. If files appear out of order, check that your file explorer is sorting by Name (not by date or size).

Output file already exists

If Skip files that already exist is checked, the app skips chunks that are already present in the output folder. Uncheck this option to overwrite existing files, or delete the existing output files first.

Output folder cannot be created

  • Check that you have write permission to the output location
  • Avoid network drives or synced folders (OneDrive, Dropbox) as the output location — use a local path such as Documents\BatchSplitPDFs instead

App won’t start or crashes on launch

  • Check that Windows is up to date; the app requires Windows 10 or later
  • Reinstall the app from the Microsoft Store if the issue persists

Still stuck?

Email hello@3thousand30.com or open an issue with the error message and a description of the PDF you were splitting.