Merge PDF — Combine Multiple PDFs into One File, Free
Free · Private · No sign-up🔒 Your files never leave your device
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Merge two or more PDF files into a single document in seconds. Drag your files in, reorder them however you like, and download the combined PDF. Everything happens locally in your browser using JavaScript — your PDF is never uploaded to a server, so it's safe to use for private, sensitive, or confidential documents.
How to use merge pdf
- 1Drag and drop two or more PDF files, or click to browse.
- 2Reorder the files using the ↑ / ↓ buttons so pages end up in the order you want.
- 3Click "Merge PDFs" to combine them into a single file.
- 4Your merged PDF downloads automatically — nothing is stored anywhere.
Frequently asked questions
Is there a limit to how many PDFs I can merge?
No artificial limit — since merging happens in your browser, you can combine as many files as your device's memory allows.
Will merging change the quality of my PDFs?
No. Pages are copied directly from the source files, preserving the original text, images, and formatting exactly.
Are my files uploaded anywhere?
No. All merging happens locally on your device using JavaScript — your files never leave your browser.