Are my PDF files uploaded to a server?

No. Everything happens locally in your browser using pdf-lib. Your files never leave your device.

Does splitting preserve form fields and annotations?

pdf-lib copies pages including annotations and form fields. However, cross-page form logic may not work correctly after splitting.

Can I split an encrypted PDF?

Encrypted PDFs require a password. If the PDF is encrypted, splitting will fail. Decrypt the file first with a PDF utility.

How many files can I download at once?

For multiple output files you can download each individually or click "Download All as ZIP" to get a single ZIP archive.

What is "every N pages" mode?

This mode groups pages into chunks of N. For a 10-page PDF split every 3 pages you get four PDFs: pages 1-3, 4-6, 7-9, and 10.

PDF Splitter - Toolcroft

How to split a PDF into multiple files

Drop your PDF above, choose a split mode, and click Split PDF. The tool uses pdf-lib to extract the pages you specify and produce separate PDF files: all inside your browser. Nothing is sent to any server.

Splitting by page range vs every-N pages

By ranges gives you full control: enter any combination of single pages and ranges (e.g. 1-5, 7, 10-12) and each entry becomes its own file. Use Every N pages to split a long document into equal-length chunks, ideal for batching or printing. One per page extracts every page as an individual PDF, useful when each page is a separate form or certificate.

Downloading split files

After splitting you can download each file individually or click Download All as ZIP to bundle everything into a single archive: handy when the split produces many files.

Splitting scanned documents by content

The splitter works with any PDF structure - scanned images, text, mixed content. However, for scanned documents where you want to split at section boundaries rather than fixed page counts, you will need to identify the boundary page numbers manually from a preview, then use the By ranges mode to define each section precisely.

Privacy

Your PDF never leaves your device. All processing is performed entirely in your browser using pdf-lib. No account, no upload, no data retention. Closing the tab leaves nothing behind.

Relationship to other PDF tools

The PDF tool family on this site works well in combination:

Split a large document, edit each section independently, then use the PDF Merger to recombine them.
Use the PDF Page Extractor when you want a single output file with a non-contiguous page selection (e.g. pages 1, 5, and 12 combined).
Use the PDF Page Reorder tool to rearrange page order without splitting or merging.