Merge PDF
Combine multiple PDF files into a single document. Reorder pages, then download — all in your browser, never uploaded.
How to use the Merge PDF
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Add the PDF files you want to merge.
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Drag them into the order you want.
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Click Merge and download the combined PDF.
How to merge PDF files
Merging PDFs joins two or more documents into one continuous file — handy for combining invoices, reports, scanned chapters or signed contracts. This tool reads each file in your browser with pdf-lib, copies every page in your chosen order, and writes a fresh PDF. Because all of it runs locally, even confidential documents never touch a server.
Key features
- Combine unlimited PDFs into one file
- Drag to reorder before merging
- Remove a file or start over anytime
- 100% client-side — nothing is uploaded
Frequently asked questions
Are my files uploaded to a server?
No. Merging happens entirely in your browser, so your documents never leave your device.
Is there a limit on how many PDFs I can merge?
There's no hard limit — it depends only on your device's available memory.
Will merging reduce the quality of my PDFs?
No. Pages are copied losslessly, so text, images and fonts stay exactly as they were.