AccDox: Merge PDF Files

Combine multiple PDF documents into one — no server upload

Drag PDF files here or click to browse
Up to 10 files, 10 MB each.
Files are processed directly in your browser — never uploaded to any server.

Need to split a PDF into pages?

Try PDF Split →

Want to turn photos into a PDF?

Try Image to PDF →

Need to add a watermark to a PDF?

Try Watermark →

Need to redact personal data in a PDF?

Try PDF Redact →

Frequently Asked Questions (FAQ)

No. PDF Merge runs entirely locally - in your browser's memory, using JavaScript. Your files never leave your device and are never uploaded to a server. We have no access to them at any point in the process.

Yes - precisely because all processing happens locally in your browser, with no server upload, the tool is suitable for contracts, invoices and other sensitive documents. Close the tab and everything is cleared from memory.

When you select files, your browser loads them directly into its own memory and merges them using a JavaScript library running client-side. The resulting PDF is also generated locally and downloaded straight to your device.

We don't impose an artificial limit. The real constraint comes only from your device's available RAM and CPU power, since files are processed in your browser's memory rather than on a server.

A connection is only needed to load the page initially. The actual merging of your PDF files then happens fully offline, in your browser.

No. The resulting file is generated temporarily in your browser's memory and downloaded directly to your device - it never passes through our servers and we keep no copy.

In the order shown in the list. Before clicking "Merge", you can reorder files with the up/down arrows or remove any of them.

No, PDF Merge is completely free and requires no registration or account.

Only PDF files (.pdf). If you need to convert another format to PDF, watch for future AccDox tools.

PDF Merge is available in Bulgarian, English and Turkish.