How to use this PDF Organizer:

1. Select multiple PDF files using the button above or by dragging and dropping
2. Files will appear in the organizer list - drag and drop to reorder them
3. Use the control buttons to organize files (move up/down, sort, reverse order)
4. Choose your organization mode: Merge, Reorder Pages, or Split & Organize
5. Click "Organize PDFs" to process the files according to your settings
6. Download the organized PDF file or files

Note: All processing happens in your browser - your files are never uploaded to any server.