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How to Split PDF Into Multiple Files — Free Online

There are many situations where you need to split a PDF into multiple files: extracting a few pages from a 200-page report, separating chapters from a combined document, or pulling out specific invoices from a batch scan. The Split PDF tool lets you do this for free in your browser—no upload to a server, no software needed.

When Do You Need to Split a PDF?

Common reasons to split a PDF:

  • Extract specific pages: Share only the relevant section of a large report without sending the whole document.
  • Separate scanned documents: A batch scan combines multiple separate documents (invoices, letters, forms). You need each as its own file.
  • Divide a book: Split a long PDF book by chapter for easier reading or distribution.
  • Fix accidental merges: A PDF was merged incorrectly — now you need to un-merge it.
  • Reduce email attachment size: Split a large PDF into smaller chunks that fit within email attachment limits.

Splitting is often the first step before compressing each section or sharing targeted parts of a document.

How to Split a PDF — Step by Step

Method 1: Extract a Page Range

Use this when you know exactly which pages you need.

  1. Go to Split PDF
  2. Upload your PDF
  3. Select "By page range"
  4. Enter your range (e.g. 1-5 for pages 1 through 5, or 1-3, 7, 10-12 for multiple ranges)
  5. Click Split — each range becomes a separate PDF
  6. Download the result as a ZIP file containing one PDF per range

Range syntax examples:

| You type | You get | |----------|---------| | 1-5 | Pages 1 to 5 as one PDF | | 1-3, 7 | Pages 1–3 as PDF 1; page 7 as PDF 2 | | 1, 2, 3 | Each page as its own PDF | | 5- | Pages 5 to the end |

Method 2: Split Every N Pages

Use this for uniform splitting — dividing a 100-page document into 10-page chunks, for example.

  1. Go to Split PDF
  2. Upload your PDF
  3. Select "Every N pages"
  4. Enter the chunk size (e.g. 10 for 10 pages per file)
  5. Click Split — the tool creates one PDF per chunk and packages them in a ZIP

This is ideal for batch-scanned documents where each document is a known number of pages.

How to Extract a Single Page

To extract a single page from a PDF, use the page range method with a single page number:

  1. Upload your PDF
  2. Choose "By page range"
  3. Enter just the page number, e.g. 7
  4. Download — you'll get a single-page PDF

Splitting vs Extracting: What's the Difference?

These terms are sometimes used interchangeably, but there's a useful distinction:

  • Splitting typically means dividing the entire document into multiple output files (every page becomes a file, or uniform chunk splitting)
  • Extracting means pulling out a subset of pages and discarding the rest

The Split PDF tool supports both via its two modes.

How to Un-Merge a PDF

If you accidentally merged PDFs and want to reverse it, you can't directly "undo" a merge. But you can:

  1. Split the merged PDF by page range — specify the page ranges that correspond to each original document
  2. You'll get back each section as its own PDF

This works best when you remember which pages belonged to which original file. If you don't, open the merged PDF and note the page numbers where each section starts.

Tips for Splitting Large PDFs

Splitting a 300-page document by single pages creates 300 output files, which can be slow in the browser. If you need every page as its own file, batch in groups: split pages 1–50, then 51–100, and so on.

Splitting scanned PDFs: Scanned PDFs are image-based, so each "page" is really a full-page image. Splitting works fine — each output file contains the correct scanned page images.

Naming output files: The tool names output files page-1-5.pdf, page-6-10.pdf, etc. by range, or chunk-1.pdf, chunk-2.pdf, etc. for uniform splits. Rename them as needed after downloading.

After Splitting: What's Next?

Once you've split your PDF, common next steps include:

  • Compress PDF — reduce each section's file size before emailing
  • Merge PDF — re-combine specific sections in a new order
  • Add Page Numbers — re-number pages that were disrupted by splitting
  • Protect PDF — password-protect individual sections for different audiences

Frequently Asked Questions

Is the split tool free?
Yes, completely free. No account, no watermark, no file size cap below 100 MB.

Are my files safe?
Splitting happens entirely in your browser using pdf-lib (WebAssembly). No file is ever sent to a server.

Can I split a password-protected PDF?
You'll need to unlock the PDF first, then split it, and optionally re-protect the individual sections.

What if I split incorrectly?
The original uploaded file is unchanged. Just split again with corrected page ranges.