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256-bit Encryption•Max 50 MB per file
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Why use our Merge Pdf tool?
- Combine unlimited PDF files into one document
- Preserves original quality — no compression
- Drag-and-drop file reordering before merging
- Works on Windows, Mac, Linux and mobile
Common use cases
- 1Merge scanned documents into one PDF
- 2Combine chapters of a book or report
- 3Join multiple invoices into a single file
- 4Merge certificates and supporting documents
Back to all tools
How it works
1
Upload your file
Select or drag-and-drop your file. Supports PDF, Word, Excel, images and more.
2
Apply settings
Configure options if needed and click the convert button.
3
Download result
Your file is ready instantly. Automatically deleted after 2 hours.
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Frequently asked questions about Merge Pdf
How do I merge PDF files for free?
Upload all your PDF files, arrange them in the order you want, then click Merge PDF. Download your combined file instantly. No signup required.
Is there a limit on how many PDFs I can merge?
Free users can merge up to 5 files per day. Pro users get unlimited merges with files up to 500MB each.
Will merging PDFs reduce quality?
No. Our tool copies pages directly without re-encoding, so quality is identical to the originals.
Can I merge PDFs on my phone?
Yes. ConvertDocHub works in any mobile browser — no app download needed.
🔒 Your files are encrypted with 256-bit SSL and permanently deleted from our servers 2 hours after processing. We never read or share your documents.