How to Split a Large PDF — Extract Pages, Chapters, or Sections

Why Split a PDF?

The most common reasons people need to split PDFs:

1. Email attachment limits — Your 45 MB report won't attach. Split into 3 parts of 15 MB each.
2. Extract specific pages — A client needs pages 12-18 from a 200-page document.
3. Separate chapters — Break a book or manual into individual chapter files.
4. Remove pages — Delete irrelevant sections before sharing.
5. Upload limits — LMS, government portals, and court filing systems often cap at 10-25 MB.

Method 1: Extract Specific Pages

Need pages 5, 12, and 30-35 from a 100-page document:

1. Upload to MyPDF Split PDF
2. Enter page ranges: "5, 12, 30-35"
3. Download the extracted pages as a new PDF

The original PDF is untouched. You get a new file containing only the pages you selected.

Method 2: Split into Equal Parts

Need to break a 60-page PDF into three 20-page files:

1. Upload to MyPDF Split PDF
2. Choose "Split every N pages" → set to 20
3. Download three separate PDFs

This is useful for splitting textbooks into weekly readings or breaking large reports into manageable sections.

Method 3: Split Every Page

Sometimes you need every page as a separate file — common for processing scanned documents or archiving individual records:

1. Upload to MyPDF Split PDF
2. Choose "Split every 1 page"
3. Download a ZIP containing individual page PDFs

A 100-page document becomes 100 separate files. Name them systematically (page-001.pdf, page-002.pdf) for sorting.

Method 4: Desktop Software

Preview (Mac): View → Thumbnails → Select pages → drag them to the desktop. Each dragged selection creates a new PDF. Simple but manual. PDF-XChange Editor (Windows, free): Right-click pages in thumbnail view → Extract Pages. More options than Preview. Adobe Acrobat Pro: Organize Pages → Split. The most control (by page count, by file size, by bookmarks/chapters).

Splitting by File Size

When the goal is to get under an email or upload limit:

Original Size	Target Per Part	Pages Per Part (estimate)
50 MB	25 MB	~Half
50 MB	10 MB	~20% each
100 MB	25 MB	~25% each

File size doesn't scale perfectly with page count — pages with images are larger than text-only pages. You may need to adjust splits if one section has many images. MyPDF Compress PDF can often reduce the file enough to avoid splitting entirely. Try compressing first.

After Splitting: Reassembly

If the recipient needs the full document after reviewing individual sections:
→ MyPDF Merge PDF combines the parts back into one file.

Related Tools

• Split PDF — Split PDFs by page range or count
• Extract PDF Pages — Pull specific pages
• Delete PDF Pages — Remove unwanted pages
• Compress PDF — Reduce size to avoid splitting