Split PDF Online — Free & Secure
Divide PDF documents into separate files or extract specific pages. Choose from multiple splitting modes — all processing happens securely in your browser.
Why Choose Our PDF Splitter?
Complete Privacy
Your PDF never leaves your device. Unlike cloud-based splitters that upload your documents to remote servers, LocalPDF processes everything locally for maximum security.
Multiple Splitting Modes
Split by individual pages, custom page ranges, fixed intervals, extract specific pages, or use AI-powered smart splitting by chapters and sections. Flexible options for any workflow.
AI-Powered Chapter Detection
Automatically detect chapters, sections, and logical breaks in your documents. Perfect for splitting textbooks, manuals, reports, and books without manually counting pages.
No File Size Restrictions
Split PDFs of any size without hitting upload limits. Your browser's memory is the only constraint.
Instant Results
No upload time, no processing queues. Split happens in your browser at native speed — usually under 2 seconds.
Preserve Document Quality
Lossless splitting preserves original resolution, fonts, and formatting. Every page looks identical to the source.
Batch Operations
Split multiple documents sequentially without re-uploading or leaving the page.
Key Features
How It Works
100% Private Sandbox: Your files never leave your device. All processing happens locally in your browser's secure memory.
Frequently Asked Questions
How can I split a PDF by custom page ranges?
Select the 'Custom Ranges' mode and enter your desired pages. For example, '1-5, 10, 15-20' will create three separate documents from those specific sections. Everything is calculated instantly in your browser.
Does splitting a PDF reduce its quality?
No. LocalPDF uses lossless splitting, meaning it extracts the original pages without re-encoding images or changing text formats. The output files will have the exact same quality as the source.
How does the AI 'By Structure' splitting work?
Our smart engine analyzes headings, table of contents, and layout patterns to identify logical chapters and sections. It allows you to split books or long reports into meaningful files without manually checking page numbers.
Can I split password-protected documents?
Yes, you can upload protected PDFs. You will be prompted for the password locally in your browser to unlock the file for splitting. We never see or store your passwords.
Technical Architecture: How it Works
Zero-Knowledge Architecture
Our system is designed so that your data is never seen by anyone else. Processing happens in the browser's secure memory space.
WebAssembly Performance
We use high-performance WebAssembly modules to achieve desktop-grade PDF processing speeds directly in your web browser.