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Split PDF by Bookmarks

Split a PDF by bookmarks: separate a bookmarked file into chapter PDFs while keeping each chapter's source page order. All chapters arrive in one ZIP.

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

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

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A practical guide

Save bookmarked sections as separate PDFs.

  1. Choose a PDF with top-level bookmarks at the intended section starts.
  2. Split using bookmark chapters.
  3. Unpack the ZIP and verify each chapter's title, range and first page.

Try this example

The six-page sample has top-level chapter bookmarks on pages 1 and 4. Check that the two resulting PDFs contain pages 1-3 and pages 4-6, respectively.

Before

  • Chapter 1
  • Chapter 2

After

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

Before you start: Bookmark splits do not find unmarked headings; keep the original and inspect all ZIP entries.

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.