How to Merge Multiple PDF Files Online — Free & Fast

Why You Need PDF Merging

Reports, invoices, shipping manifests — they often arrive as separate files. Merging them into a single PDF keeps everything organized and professional.

How to Merge PDFs with PDF4u

1. Go to Merge PDF
2. Upload all your PDF files
3. Drag to reorder them as needed
4. Click Merge and download your combined PDF

Use Cases

• Combining monthly invoices into one file
• Merging shipping manifests from multiple couriers
• Creating a single portfolio PDF from multiple document pages