Secure PDF Merger - 100% Private, No Server Uploads

Process unlimited PDFs locally in your browser. Your files never leave your computer, ensuring maximum privacy and security.

Drop your PDF files here

How to Combine PDFs in 3 Simple Steps

  1. 1. Select PDF Files to Combine

    Add multiple PDF documents using drag and drop or your file browser.

  2. 2. Arrange Document Order

    Sort and organize your documents using our simple drag and drop interface.

  3. 3. Merge and Save Your PDF

    Click 'Merge' to combine all selected PDFs into one document.

Key Features

🔒 Complete Privacy

Your files never leave your computer. All processing happens directly in your browser.

∞ No Limits

Combine as many files as you need, with no restrictions on file size or quantity.

📝 High Quality

Preserves original document quality, perfect for professional and image-heavy files.

🚀 No Watermarks

Get clean, professional results without any watermarks or branding.

Common Questions About Our Free PDF Combiner

PDF Merging Basics

How many PDF documents can I combine at once?
There's no limit to the number of PDF files you can combine. Your device's capabilities are the only constraint, allowing you to process as many documents as you need in one go.
What is the maximum PDF file size for combining?
Our PDF combiner is designed to efficiently handle large PDF files of any size. Even on a standard computer with 8GB of RAM, you can expect to:
  • Combine over 1000 small PDF documents (such as invoices or forms)
  • Merge large PDF documents, each potentially containing 1000+ pages
  • Process individual PDF files larger than 1GB

Please note that these figures are estimates based on typical usage and system configurations. Actual performance may vary depending on factors like the complexity of the PDF content, specific system resources, and other background processes. For even more demanding tasks, a more powerful computer will deliver enhanced performance.

Can I merge PDF files without size restrictions?
Unlike other PDF tools that limit you to merging 20-50 files, our PDF combiner has no artificial restrictions. Since all processing happens on your device, you can combine PDF files of any size or quantity without server limitations.

Tips for Best Results when Merging PDFs

How to efficiently combine large PDF files?
For best results when combining large PDF documents:
  • Free up system memory by closing unused applications.
  • Ensure your device has adequate RAM (8GB or more recommended).
  • When joining very large PDF files, consider processing them in smaller groups.
What should I do if PDF merging stops working?
This usually indicates your device has reached its memory limits. Try these solutions:
  • Combine your PDFs in smaller batches.
  • Use a more powerful computer with ample RAM.
  • Restart your browser to clear its memory cache.
  • Ensure your browser is up-to-date.