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Split Large PDFs into Smaller Files | Rune
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Split Large PDFs into Smaller Files | Rune

Divide large PDF files into smaller, manageable documents. Perfect for email attachments, sharing, and organization.

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2 min read

Large PDF files create problems: they're hard to email, slow to load, and cumbersome to navigate. Splitting them into smaller files solves all these issues.

Why Split Large PDFs?

Email Attachment Limits

Most email services limit attachments to 10-25MB. A 50MB PDF won't send without splitting.

Faster Loading

Smaller files open faster, especially on mobile devices or slow connections.

Easier Navigation

Finding information in a 500-page PDF is harder than searching a focused 50-page document.

Targeted Sharing

Share only relevant sections rather than the entire file.

Methods for Splitting Large PDFs

Split Every N Pages

Automatically divide into equal sections.

Example:

  • 50-page PDF
  • Split every 10 pages
  • Result: 5 separate PDFs (pages 1-10, 11-20, 21-30, 31-40, 41-50)

Custom Ranges

Define logical section breaks manually.

Example:

  • 100-page report
  • Split into: Intro (1-5), Analysis (6-50), Data (51-80), Appendix (81-100)
  • Result: 4 focused documents

How to Split Large PDFs

  1. Open Rune's Split PDF.
  2. Upload your large PDF.
  3. Choose splitting method:
    • Every N pages: For equal divisions.
    • Custom ranges: For logical sections.
  4. Configure your settings.
  5. Click "Split PDF."
  6. Download all or individual files.

Splitting for Different Purposes

Purpose Recommended Method
Email attachment limits Split every 10-20 pages
Chapter separation Custom ranges by chapter
Handout creation Split every 2-5 pages
Archive organization Custom ranges by section

Example: Splitting a Large Report

Original File

Annual_Report_2024.pdf (150 pages, 45MB)

Splitting Strategy

  • Executive Summary: Pages 1-5
  • Financial Overview: Pages 6-30
  • Operations: Pages 31-80
  • Market Analysis: Pages 81-120
  • Appendices: Pages 121-150

Result

5 focused PDFs, each under 15MB, easy to email and navigate.

File Size Considerations

  • Split files are approximately proportional to page count.
  • A 50MB PDF split in half becomes ~25MB each.
  • Image-heavy pages may result in larger individual files.

Conclusion

Large PDFs don't have to stay large. Use Rune's Split PDF to divide them into manageable, shareable, and organized files.

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