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FormatDrop
How-To Guide

How to Split a PDF Into Multiple Files

Splitting a PDF is the inverse of merging — extract specific page ranges, separate every page into its own file, or break a long document into chapters. Common use cases: sending only specific pages to a recipient, breaking a book into chapter PDFs, or extracting an exam answer key from a full document.

Step-by-step instructions

  1. 1

    Upload your PDF file

    Select your .pdf file. A dedicated FormatDrop PDF splitter — with page thumbnails and range selection — is coming soon; it is not live yet. Today, the FormatDrop PDF to PNG converter exports every page as its own image file, locally in your browser with no upload. Free tier: 5 files at a time, 10 MB per file; Pro raises the size cap to 500 MB.

    Go to converter
  2. 2

    Split into real PDFs with a desktop tool (today)

    To split a PDF into smaller PDFs today, use a desktop tool. On Mac, Preview works: open the PDF, show thumbnails, select the pages you want, and drag them to a folder — each drag creates a new PDF. On any OS, qpdf is free: `qpdf --pages input.pdf 1-10 -- part1.pdf` extracts pages 1–10. The FAQ below has more commands. FormatDrop's browser splitter is coming soon and will cover these options without an install.

  3. 3

    Save the output files

    qpdf and PDFtk write the split PDFs next to your original, one file per range or per page. Splitting copies pages without re-encoding, so quality is identical to the source. If you used FormatDrop's PDF to PNG route instead, you get one image per page, with a Download-all ZIP for multi-page files.

Why split a PDF?

Splitting PDFs is the inverse of merging — both are routine PDF operations that preserve every byte of quality from the source document.

Your files never leave your device

FormatDrop runs the conversion engine entirely inside your browser using WebAssembly. No file upload. No server. Nothing stored. You can verify this by opening DevTools → Network tab and watching: zero upload requests.

Frequently asked questions

Best command-line tool to split PDF?
qpdf: `qpdf --split-pages input.pdf output-%d.pdf` splits into one file per page. For specific ranges: `qpdf --pages input.pdf 1-10 -- pages-1-10.pdf`. PDFtk: `pdftk input.pdf burst output page_%02d.pdf`.
Will I lose quality when splitting?
No — splitting is a copy operation that preserves the original PDF data exactly. The split files are bit-identical to the original pages.
How do I split by chapter using bookmarks?
qpdf doesn't support this directly; use PyPDF2: `from PyPDF2 import PdfReader, PdfWriter; reader = PdfReader('input.pdf'); for outline in reader.outline: ... `. Or use Calibre's PDF chapter detection feature.
Convert PDF pages to PNG — Free

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