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Merge PDF

Combine multiple PDF files into one document in seconds. 100% free, private and right in your browser.

Updated: August 2026

  • 100% browser-based Your files never leave your device.
  • No registration Start instantly – no account, no login.
  • Privacy first No upload, no storage on servers.

Process PDF

Select two or more PDFs to merge them into one.

Key features

  • Unlimited files Combine as many PDFs as you like in one step.
  • Drag & drop ordering Reorder pages easily by dragging.
  • 100% local processing No file ever leaves your browser – maximum privacy.
  • Original quality Every page keeps its full original quality.
  • Free, no sign-up Free forever, no registration, no limits.
  • → One document instead of many: Send and archive a single clean file.
  • → Faster sharing: One attachment instead of many – emails stay tidy.
  • → Private and secure: Confidential content never leaves your device.

Notes & limitations

  • • Password-protected files: Protected PDFs must first be opened with Unlock PDF.
  • • Large files: Very large files depend on your device's memory.

How it works

Three steps to a finished PDF – no sign-up.

  1. 01

    Choose a file

    Drag & drop your PDF into the field or pick it from your device.

  2. 02

    Run the tool

    Adjust options and click Process – everything runs locally in your browser.

  3. 03

    Download

    Save the finished PDF straight to your device.

How does this PDF tool work?

Our free PDF merge tool runs entirely in your browser. You never upload files to a server — processing happens locally on your device. This makes the process both fast and private, which matters for users who care about data protection.

After selecting your documents, you can reorder pages freely with drag & drop. One click combines everything into a single, continuous PDF. Original quality is preserved at 100% because pages are simply repackaged.

When is a PDF merge useful?

A merged document is easier to send and archive. Common cases include combining contracts, bundling invoices for accounting, or joining scanned pages into one file. Instead of several attachments, you send a single professional PDF.

Is this tool free?

Yes. Merging PDFs is free forever and requires no registration. There are no hidden limits on the number of files.

Are my files safe?

Completely. Because processing happens only in the browser, none of your files ever leave your device. We store no content on our servers.

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Frequently asked questions

Is this tool really free?
Yes. Merging PDF files is completely free and requires no registration.
Are my files uploaded?
No. All files are processed locally in your browser. Nothing is uploaded to our servers.
How many PDFs can I merge?
You can combine as many files as you like. Reorder them with drag & drop.
Does merging affect quality?
No. Original page quality is preserved because files are repackaged locally.
Does it work on mobile?
Yes. Because processing runs in the browser, it works on phones, tablets and desktops.
Can I mix pages from different documents?
Yes. Pages from all selected files are combined in the order you want.
Can I change the order afterwards?
Yes. Reorder the files with drag & drop before merging.
What about password-protected PDFs?
Protected files must first be opened with our Unlock PDF tool.
What file sizes are possible?
There is no fixed limit. Processing depends on your device's memory; typical documents are fine.