🔒 No server uploads · No watermark

Merge PDF on Windows

DukPdf lets you merge PDFs on a Windows PC straight from your browser, so you do not need Adobe Acrobat or any other paid desktop app. Open the Merge PDF tool in Edge, Chrome, or Firefox, drop in your files, and download the combined PDF. No install, no server uploads.

Open Merge PDF →

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A common scenario

You are working on a Windows laptop without admin rights and need to combine several contract PDFs before sending them to legal — installing Acrobat is not an option.

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Why privacy matters here

Many Windows PDF tools either require installation or upload to a server. DukPdf runs entirely in your browser, so the documents never leave your PC.

✓ No watermark✓ Works offline✓ Open DevTools to verify

How to merge pdf on windows

Open the tool and add your file

Click the link below to open the tool in your browser. Drop in your PDF or click to select it. The file is read locally on your device.

Configure the operation

Pick a quality preset, page range, signature style, or whatever the tool needs. Every option runs in your browser — nothing is sent to a server.

Download the result

Click the action button. The result saves to your device. The original file is unchanged unless the tool explicitly modifies it.

Every step runs in your browser. No server uploads, no waiting.

Merge PDF on Windows — questions

Do I need to install anything to merge PDFs on Windows?

No. DukPdf runs in your browser. Open the Merge PDF page, drop in your files, and download the combined result. Nothing is installed and no admin rights are required.

Does it work in Microsoft Edge?

Yes. DukPdf is fully tested in Microsoft Edge on Windows 10 and Windows 11. Chrome, Firefox, and Opera also work the same way.

Are my PDFs uploaded during the merge?

No. The merge runs locally in your browser using WebAssembly. Open DevTools → Network tab and you will see zero upload requests while merging.

Can I reorder pages before merging?

Yes. All pages from all files appear as draggable thumbnails. You can move any page to any position across the entire merged document, and rotate pages individually.

🔒 DukPdf — YOUR FILES NEVER LEAVE YOUR DEVICE

Ready to merge pdf on windows? Your files stay yours.

No server uploads. No watermark. Open the tool, drop your file, and download the result.