Merge PDF files
Combine multiple PDFs in the exact order you want. Drag to reorder, then strike — the result is a single, perfectly fused document.
or drop PDFs here
How to merge pdf online free
Step 1
Upload files in the order you want them merged
Step 2
You can upload up to 20 PDFs at once
Step 3
Files are deleted from our servers after 24 hours
Frequently Asked Questions
Is this merge pdf tool free?
Yes, ThePDFNinja's merge pdf tool is 100% free to use. There are no hidden fees, subscriptions, or credit cards required.
How do I merge pdf for free?
Simply upload your document using the box above, configure any necessary options, and our servers will instantly process your file for free.
Do you store my files?
No. All files uploaded to ThePDFNinja are strictly confidential and are automatically and permanently deleted from our servers after 1 hour.
Does this work on Mac, iPhone, and Android?
Yes, as a web-based tool, it works flawlessly across all operating systems and devices, including Mac, Windows, iOS (iPhone/iPad), Android, and Linux.
Will there be a watermark on my file?
Absolutely not. We never add watermarks to your documents.
Why use ThePDFNinja to merge pdf?
ThePDFNinja provides the fastest, most reliable way to merge pdf online. Unlike other tools that force you to create accounts, pay subscription fees, or deal with heavy watermarks, our Merge PDF tool is completely free and accessible directly from your browser.
We prioritize your privacy above all else. Every document uploaded for merge pdf is processed in an isolated environment using AES-256 SSL encryption. Once your task is complete, the original and processed files are permanently deleted from our servers within 24 hours. We guarantee that your data is never read, analyzed, or shared with third parties.
Whether you are working from a desktop PC, a Mac, or a mobile device, you can easily merge pdf anywhere, anytime, without installing any software.