✂️ PDF Splitter

📖 Overview

What is PDF Splitter?

PDF Splitter is a powerful tool for extracting pages from PDFs and reordering them. Whether you need to split a large PDF into smaller files, extract specific pages, or rearrange page order, PDF Splitter provides an intuitive visual interface.

Key Features

• Smart Selection System: Border selection (blue) for reordering, checkboxes for splitting
• Visual Page Thumbnails: See every page before you split or reorder
• Drag & Drop Reordering: Move pages by dragging thumbnails
• Multi-Page Selection: Select and move multiple pages at once with Ctrl+click
• Flexible Splitting: Extract selected pages, split by range, or split into individual pages
• Save Modified PDF: Save reordered pages back to the original file or a new file
• Compression Options: Choose None, Low, Medium (default), or High compression with image optimization
• Password Protection: Optionally encrypt output PDFs with AES-256 encryption
• Protected PDF Support: Handles password-protected input PDFs with automatic unlock dialog
• Selection Helpers: Select All, Check All, and Clear Selection buttons

🚀 Getting Started

Quick Start Guide

1. Load Your PDF
   Click "Browse" or drag a PDF file into the field, then click "Load PDF".
2. View Thumbnails
   All pages appear as thumbnails in the scrollable area.
3. Select Pages
   Click thumbnails for borders (reorder) or checkboxes (split).
4. Perform Action
   Use "Save as New PDF" to reorder, or "Split Selected Pages" to extract.

🎯 Selection System

Understanding the Two Selection Types

Border Selection (Blue Border)

• How: Click on the thumbnail image itself
• Purpose: Select pages for reordering
• Visual: Blue border appears around thumbnail
• Multi-select: Hold Ctrl and click to select multiple pages
• Action: Drag bordered pages to reorder them

Checkbox Selection

• How: Click the checkbox in the top-right corner
• Purpose: Mark pages for splitting/extraction
• Visual: Checkbox becomes checked (✓)
• Multi-select: Click multiple checkboxes
• Action: Use "Split Selected Pages" to extract checked pages

📋 Common Workflows

Workflow 1: Extract Specific Pages

1. Load your PDF file
2. Click the checkbox on pages you want to extract
3. Click "Split Selected Pages" button
4. Choose where to save the new PDF
5. New PDF contains only the checked pages

Workflow 2: Reorder Pages

1. Load your PDF file
2. Click thumbnails (not checkboxes) to select pages
3. Drag selected pages to new positions
4. Click "Save as New PDF"
5. New PDF has pages in the reordered sequence

Workflow 3: Delete Unwanted Pages

1. Load your PDF
2. Check the boxes on pages you want to KEEP
3. Click "Split Selected Pages"
4. Save the result - unwanted pages are excluded

⚙️ Features

Helper Buttons

• Select All: Adds blue border to all pages (for reordering)
• Check All: Checks all page checkboxes (for splitting)
• Clear Selection: Removes borders and unchecks all boxes

Multi-Page Operations

Select multiple pages at once:

• Hold Ctrl and click to add pages to border selection
• Drag all bordered pages together as a group
• Check multiple boxes to extract several pages

💡 Tips & Best Practices

Efficient Selection

• Use "Select All" then deselect unwanted pages with Ctrl+Click
• Use "Check All" then uncheck pages you don't want to extract
• "Clear Selection" resets everything quickly

🔧 Troubleshooting

Q: Pages won't reorder when I drag them

A: Make sure the pages have blue borders (click thumbnail, not checkbox). Only bordered pages can be dragged.

Q: "Split Selected Pages" creates an empty PDF

A: You need to CHECK the boxes (✓) on pages to split them. Border selection doesn't work for splitting.

Q: I can't select multiple pages

A: Hold Ctrl while clicking thumbnails for border selection. For checkboxes, just click each one.