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Split PDF by Bookmarks

Split a bookmarked technical report at its top-level section starts for review by topic. Outline bookmarks set the cuts; visible headings do not.

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 single file: 10 MB

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A practical guide

Keep section boundaries tied to the document outline.

  1. Choose a report with top-level bookmarks at the desired section starts.
  2. Run bookmark split and download the ZIP.
  3. Compare each section's title and source-page range with the outline.

Try this example

Use the six-page sample where bookmarks start chapters on pages 1 and 4. Verify the outputs cover 1-3 and 4-6 before attaching them to a project record.

Before

  • Chapter 1
  • Chapter 2

After

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

Before you start: PDF outline bookmarks control the split; the operation does not infer chapters from visible text.

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

One PDF. Up to 200 bookmarks, 4 levels deep, titles up to 200 characters. Existing bookmarks are replaced.

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.