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How to Split a PDF: All Methods Compared 2026

SynthPDF Team·6 min read·May 19, 2026

When You Need to Split a PDF

PDF splitting is one of the most frequently needed document operations — and one of the most frequently done wrong (hello, copy-pasting page by page). Here are the most common reasons to split a PDF:

  • A 50-page report where you only need pages 12–18 to share with a colleague
  • A combined contract-and-exhibits PDF where each exhibit needs to go to a different party
  • A scanned multi-page document where each page needs to be processed separately
  • A bank statement where you need one month extracted from a 12-month combined PDF
  • A book PDF where each chapter needs to be a separate file for distribution

The right method depends on how often you need to split, how technical you are, and how sensitive the document is.

Method 1: SynthPDF Split Tool (Online, Browser-Only)

The fastest option for most situations. Files never leave your device.

How to split:

  1. Go to SynthPDF Split PDF
  2. Upload your PDF (up to 25 MB free)
  3. Choose your split mode:
    • Split all pages — every page becomes a separate PDF, downloaded as a ZIP
    • Extract page range — enter "5-12" to get pages 5 through 12 as one PDF
    • Select specific pages — click page thumbnails to pick non-consecutive pages
  4. Click Split
  5. Download your file(s)

Privacy note: Like the Merge tool, splitting runs entirely in your browser using PDF-lib. No data is sent to any server. This is ideal for financial statements, legal contracts, and medical records.

Free plan limits: Up to 25 MB per file. No page count limit.

Method 2: Adobe Acrobat (Desktop)

For complex splitting with precise control:

  1. Open Acrobat Pro and go to Tools > Organize Pages
  2. Click Split
  3. Choose: split by number of pages, file size, or bookmarks
  4. Set the output folder
  5. Click Output Options > Split

Unique capability: Acrobat can split a PDF by bookmarks (outline entries), which is useful for splitting long documents (books, manuals) into chapters without manually entering page ranges.

Cost: Acrobat Pro, $19.99/month.

Method 3: macOS Preview

For Mac users, Preview splits PDFs without any additional software:

Extract specific pages:

  1. Open the PDF in Preview
  2. Go to View > Thumbnails
  3. Select the pages you want to extract (Cmd+click for multiple)
  4. Drag those thumbnails to the Finder (desktop or folder)
  5. Preview creates a new PDF with just those pages

Split into individual pages:

  1. With thumbnails visible, select all pages (Cmd+A)
  2. Go to File > Export Selected Pages to PDF (if available in your version)
  3. Or drag each thumbnail individually to the Finder

Limitation: Exporting individual pages is tedious for large documents. For PDFs over 30 pages, an online tool is faster.

Method 4: Command Line with pdfnup / pdftotext / pdftk

Using pdftk (PDF Toolkit)

# Install on Ubuntu/Debian
sudo apt install pdftk

# Install on macOS via Homebrew
brew install pdftk-java

# Extract pages 5 through 12
pdftk input.pdf cat 5-12 output pages_5_to_12.pdf

# Extract specific non-consecutive pages (1, 4, 7, 10)
pdftk input.pdf cat 1 4 7 10 output selected_pages.pdf

# Split every page into its own file
pdftk input.pdf burst output page_%04d.pdf

Using Ghostscript

# Extract pages 5–12
gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dQUIET \
   -dFirstPage=5 -dLastPage=12 \
   -sOutputFile=pages_5_to_12.pdf input.pdf

Using poppler-utils (pdfnup / pdfseparate)

# Install
sudo apt install poppler-utils

# Split every page into separate files (page-1.pdf, page-2.pdf, ...)
pdfseparate input.pdf page-%d.pdf

# Extract a page range
pdfseparate -f 5 -l 12 input.pdf pages-%d.pdf

Method 5: Python (pypdf)

For automated workflows:

from pypdf import PdfWriter, PdfReader

def extract_page_range(input_path: str, output_path: str, start: int, end: int) -> None:
    # start/end are 1-indexed, inclusive
    reader = PdfReader(input_path)
    writer = PdfWriter()
    for page_num in range(start - 1, end):
        writer.add_page(reader.pages[page_num])
    with open(output_path, "wb") as f:
        writer.write(f)

def split_all_pages(input_path: str, output_dir: str) -> list[str]:
    # returns list of output paths
    import os
    reader = PdfReader(input_path)
    output_paths = []
    for i, page in enumerate(reader.pages, 1):
        writer = PdfWriter()
        writer.add_page(page)
        out_path = os.path.join(output_dir, f"page_{i:04d}.pdf")
        with open(out_path, "wb") as f:
            writer.write(f)
        output_paths.append(out_path)
    return output_paths

# Usage
extract_page_range("report.pdf", "pages_5_to_12.pdf", 5, 12)
split_all_pages("multi_page.pdf", "./pages/")

Using PyMuPDF for faster splitting

import fitz  # PyMuPDF

def split_pdf_range(input_path: str, output_path: str, start: int, end: int) -> None:
    # start/end are 0-indexed, end is exclusive
    doc = fitz.open(input_path)
    new_doc = fitz.open()
    new_doc.insert_pdf(doc, from_page=start, to_page=end - 1)
    new_doc.save(output_path)
    doc.close()
    new_doc.close()

PyMuPDF is significantly faster than pypdf for large files due to its C++ core.

Split vs. Remove Pages — What's the Difference?

People often confuse these two operations:

Split extracts pages into a new document. The original file is unchanged. You get a new PDF containing only the pages you selected.

Remove Pages deletes pages from a copy of the original document and returns the remainder. Use our Remove Pages tool to delete specific pages and keep everything else.

Use case summary:

  • "I want pages 5–12 as a separate file" → Split
  • "I want the document without pages 5–12" → Remove Pages

Privacy Comparison by Method

MethodFiles Leave Your Device?Notes
SynthPDFNoBrowser-only, PDF-lib
macOS PreviewNoLocal processing
Command line (pdftk, gs)NoLocal processing
Python (pypdf, PyMuPDF)NoLocal processing
Adobe AcrobatNoLocal processing
Smallpdf onlineYesServer upload
iLovePDF onlineYesServer upload

SynthPDF is the only online tool in this list that processes files in the browser. If you need a web interface (not command line) and cannot upload sensitive files, SynthPDF is the choice.

Feature Comparison

MethodExtract RangeSelect PagesSplit AllZIP DownloadFree
SynthPDF✓✓✓✓✓
Acrobat✓✓✓✗No ($20/mo)
Preview (Mac)✓✓Manual✗✓
pdftk CLI✓✓✓✗✓
pypdf Python✓✓✓✓ with code✓

Which Method Should You Use?

Occasional use, privacy-sensitive documents: SynthPDF — browser-only, no upload, visual page selection

Mac with no extras: macOS Preview — built-in, drag and drop

Technical / automated workflow: pdftk or pypdf — fast, scriptable, zero cost

Large files needing bookmark-based splitting: Adobe Acrobat — the only GUI tool with this feature

High volume pipeline: PyMuPDF — fastest Python library for bulk splitting

Troubleshooting Common Split Issues

Encrypted/password-protected PDFs: Remove the password first with Unlock PDF, then split.

Pages come out rotated: Some PDFs store rotation metadata. Check Rotate PDF after splitting if orientation is wrong.

Split pages are larger than expected: Each split page retains all fonts embedded in the original PDF, even if only a few glyphs are used on that page. Run the output through Compress PDF to remove unused font data and reduce size.

Bookmarks/table of contents broken after split: PDF bookmarks (outline) reference pages by index. After splitting, page indices change. Bookmarks need to be reconstructed manually in Acrobat or using a PDF editing library.

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