Skip to contentSkip to tool
Your files stay on your device

File processing runs in your browser. Documents are not uploaded to our servers. The site may download processing engines and send usage or feedback events without file contents.

How we handle your data
All PDF tools

Split PDF by Bookmarks

Split a PDF by bookmarks: turn a bookmarked household guide into chapter PDFs so each section can be shared on its own. The files arrive in one ZIP.

Two real chapter bookmarks start at pages 1 and 4. Splitting by bookmarks should produce two three-page PDFs.

Your documents stay on this device. Tool downloads and usage statistics do not include file contents.

Local limits: Max files: 1 / Max single file: 10 MB / Max pages: 200

Files are processed in your browser. They are not uploaded to this site.

A practical guide

Separate the chapters already marked in the guide.

  1. Choose a PDF whose top-level bookmarks mark chapter starts.
  2. Select bookmark splitting and run the task.
  3. Open the ZIP and verify each chapter title and page range.

Try this example

Use the six-page sample with top-level chapter bookmarks at pages 1 and 4. The ZIP should contain chapter PDFs for pages 1-3 and 4-6; check the titles and ranges.

Before

  • Chapter 1
  • Chapter 2

After

  • Chapter 1.pdf
  • Chapter 2.pdf
Input and expected output for this task. Illustrative example.

Before you start: The split follows PDF bookmarks, not headings read from the page. Output files arrive in a ZIP.

Combine chosen chapters
What you get

Split a PDF at its supported top-level bookmarks. The result is a ZIP with one PDF for each chapter; PDFs without supported bookmarks cannot be split this way.

Limits and important details

Local limits: Max files: 1 / Max single file: 10 MB / Max pages: 200

Up to 40 chapters; pages before the first bookmark count as one. Only bookmarks that point to pages in increasing order are used; other PDFs need page ranges. Links, comments and form fields are kept. The result is a ZIP of chapter PDFs.

Example

Use the six-page sample PDF with top-level chapter bookmarks at pages 1 and 4. Split in bookmark mode, then inspect the ZIP: the chapter PDFs should cover pages 1-3 and 4-6. This follows PDF bookmarks, not headings detected in page text.