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Runs locally in your browser. 100% private & secure.
About Merge PDF
How PDF Merging Works
Merging PDFs used to require expensive desktop software like Adobe Acrobat. Now, thanks to modern web technologies like pdf-lib, you can manipulate PDF documents directly inside your web browser.
Secure by Design
This tool loads your PDF files into your browser's memory, creates a new blank PDF, and then copies every page from your uploaded files into the new document sequentially. Because it runs locally, you can safely merge confidential documents like contracts or financial records without worrying about them being intercepted or stored on a third-party server.
Frequently Asked Questions
Is there a limit to how many PDFs I can merge?
Technically, no. However, since the merging happens in your browser's memory, merging hundreds of large PDFs might cause your browser to crash or slow down.