Quick answer: There are four ways to split or merge PDFs. Online services need no install but require uploads. Desktop software works offline and handles large or sensitive files. Free and open-source tools cost nothing for basic tasks. Built-in OS features like macOS Preview or Print to PDF cover simple jobs. Match the method to file size, privacy, and the features you need.
Choose Your Method
Explore different approaches to PDF manipulation, each with unique advantages for various use cases and requirements
When should you use online PDF services?
Web-based tools accessible from any browser without installation
Advantages
- No installation required - instant access
- Cross-platform compatibility
- Often free with basic features
- Regular updates without user action
- No storage space used on device
Disadvantages
- Internet dependency for all operations
- File size limitations on uploads
- Critical security & privacy concerns
- Limited advanced features
- Potential data exposure risks
Popular Examples
iLovePDF
Smallpdf
Sejda
PDF2Go
Adobe Acrobat Online
Why choose desktop PDF software?
Professional offline applications with comprehensive features
Advantages
- Complete offline functionality
- High-speed processing for large files
- Full privacy and confidentiality
- Advanced features (batch processing, filtering)
- Professional-grade capabilities
Disadvantages
- Requires installation and setup
- Often expensive licensing
- Device storage requirements
- Platform-specific limitations
- Manual updates needed
Professional Solutions
Adobe Acrobat Pro
Foxit PhantomPDF
Nitro Pro
Wondershare PDFelement
PDF-XChange Editor
Free & Open-Source
Community-driven solutions with transparent development
Advantages
- Completely free to use
- Open source transparency
- Community support and development
- No licensing restrictions
- Customizable and extensible
Limitations
- Limited professional support
- Steeper learning curve
- Fewer advanced features
- Interface may be less polished
- Documentation can be sparse
Popular Options
LibreOffice Draw
PDFtk
QPDF
Inkscape
PDFsam Basic
Built-in OS Features
Native operating system and application capabilities
Advantages
- Already installed and integrated
- No additional software needed
- Native OS integration
- Zero additional cost
- Familiar interface and workflow
Limitations
- Basic functionality only
- Limited customization options
- Platform-specific availability
- No advanced processing features
- May lack batch operations
Common Features
macOS Preview
Print to PDF
Windows Print Dialog
Browser PDF Tools
Office Suite Features