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PDF Merger

Combine multiple PDF files into a single document seamlessly.

💡 PDF Merger combines multiple PDF files into a single document.

🔒 All processing happens locally — your files never leave your browser.

📌 Use the ▲ and ▼ buttons to reorder files in the merged PDF.

All processing happens locally in your browser — nothing is uploaded

How to Merge PDF Files Online

  1. 1. Click "Add PDFs" or drag and drop your PDF files into the tool above.
  2. 2. Reorder the files by dragging them into your desired sequence.
  3. 3. Click "Merge PDFs" — your combined PDF downloads instantly to your device.

Frequently Asked Questions

Is this PDF merger free?

Yes, 100% free. LittleDevBox PDF Merger is completely free to use with no file size limits, no watermarks, and no account required.

Are my PDF files safe when merging online?

Absolutely. All PDF processing happens entirely inside your browser — your files are never uploaded to any server. This makes it the most private PDF merger tool available online.

How many PDFs can I combine at once?

There is no hard limit. You can combine as many PDF files as your browser can handle. For very large files, modern browsers can typically handle dozens of PDFs at once.

Does the merged PDF maintain quality?

Yes. The PDF merge process preserves the original quality of all your documents, including images, fonts, and formatting. No compression or quality loss is applied.