How to Split a PDF Online for Free (No Upload Needed)

Splitting a PDF — extracting a chapter, isolating a single page, or separating a scanned invoice from a contract — is one of the most frequent document tasks. The good news: you can do it entirely in your browser without uploading to a third-party server, or from the command line in a single command.

Method 1 — Browser-based (no upload)

DevBench's PDF Splitter runs entirely in your browser using PDF.js. Your file is never uploaded to any server:

1. Open the DevBench PDF Splitter
2. Drop your PDF or click to browse
3. Enter the page range — for example 1-3 to extract the first three pages, or 5,8,12 for individual pages
4. Click Split — the resulting PDF downloads directly to your device

Because everything runs client-side, this is safe for confidential documents. There are no file size limits imposed by upload quotas (only browser memory).

Page range syntax

Method 2 — macOS Preview (built-in)

1. Open the PDF in Preview
2. Open the Thumbnails sidebar (View → Thumbnails)
3. Select the pages you want to extract (Cmd+click for non-contiguous pages)
4. Drag the selected thumbnails out of the window to your Desktop — this creates a new PDF with just those pages

Alternatively, print to PDF: select the pages you want, choose File → Print, set the page range, then click PDF → Save as PDF.

Method 3 — Python (pypdf)

pypdf is the standard Python library for PDF manipulation. Install it with pip install pypdf:

from pypdf import PdfReader, PdfWriter

reader = PdfReader("input.pdf")
writer = PdfWriter()

# Extract pages 3–7 (0-indexed: 2–6)
for page_num in range(2, 7):
    writer.add_page(reader.pages[page_num])

with open("extracted.pdf", "wb") as f:
    writer.write(f)
print(f"Extracted {len(writer.pages)} pages")

To split into individual single-page PDFs:

from pypdf import PdfReader, PdfWriter

reader = PdfReader("input.pdf")

for i, page in enumerate(reader.pages):
    writer = PdfWriter()
    writer.add_page(page)
    with open(f"page_{i+1}.pdf", "wb") as f:
        writer.write(f)

Method 4 — Ghostscript (command line)

# Extract pages 3 to 7
gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH    -dFirstPage=3 -dLastPage=7    -sOutputFile=extracted.pdf input.pdf

# macOS/Linux — single page (page 5)
gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH    -dFirstPage=5 -dLastPage=5    -sOutputFile=page5.pdf input.pdf

Ghostscript is pre-installed on many Linux distributions. On macOS, install with brew install ghostscript.

Handling password-protected PDFs

If the PDF is password-protected, you need to supply the password before splitting:

from pypdf import PdfReader, PdfWriter

reader = PdfReader("protected.pdf")
if reader.is_encrypted:
    reader.decrypt("your-password")

# Now proceed with splitting normally

When the file size is unexpectedly large after splitting

A PDF may embed fonts and images once for the whole document. When you extract a few pages, each output file may still include those full embedded resources. To optimise file size after splitting, run the output through a PDF compressor or use Ghostscript with the -dPDFSETTINGS=/ebook flag.