PDF Merger - Combine PDF Files Online
Merge multiple PDF files into one document. 100% local processing - no upload, no server storage.
Click or drag and drop PDF files here
Multiple files supported | Maximum 20 files | 50MB per file
Merge multiple PDF files into one document with complete privacy protection. Our PDF merger works 100% locally in your browser - no upload, no server storage. Combine PDFs for free with adjustable order and instant download.
Frequently Asked Questions
Everything you need to know about our PDF tools
Is my PDF data uploaded to your server?
No, absolutely not. Our PDF merger works 100% locally in your browser. Your files never leave your device, and we don't have any server-side processing. This ensures your documents remain completely private and secure.
How many PDF files can I merge at once?
You can merge up to 20 PDF files at once. There's no limit on total pages, but individual files should not exceed 50MB for optimal performance.
Can I change the order of files before merging?
Yes, you can easily reorder your PDF files using the up/down arrows next to each file. The merge order will follow your arranged sequence.
Does this PDF merger work on mobile devices?
Yes, our PDF merger is fully responsive and works on all devices including smartphones and tablets. However, for large PDF files, we recommend using a desktop browser for best performance.
What happens to my files after merging?
Your files are processed in real-time in your browser and are automatically cleared when you close the page. We don't store, collect, or have access to any of your documents.