How to Merge PDFs on Windows | Free Methods for Windows 11 & 10

Want to merge PDF files on Windows but not sure how? Can Windows do it natively? Is there a free way? The short answer: Windows 11 and Windows 10 have no built-in PDF merge feature. But there are several free solutions. This guide covers every method available to Windows users, organized by use case.

Can Windows Merge PDFs Natively?

First, let's clear up a common misconception: neither Windows 11 nor Windows 10 can merge PDFs with built-in tools alone. Here's why two commonly confused features don't help.

Microsoft Print to PDF Can't Merge PDFs

"Microsoft Print to PDF" is a virtual printer bundled with Windows. It converts documents and web pages into PDF format — but it cannot combine multiple existing PDF files into one.

Since it works through the print dialog, it only creates new PDFs from other content. Merging existing PDFs requires a different tool.

Microsoft Edge Can't Merge PDFs Either

Microsoft Edge, the default browser on Windows 11, can open, annotate, rotate, and print PDFs. However, it does not support combining multiple PDFs into one file.

Edge is a PDF viewer and light editor — file merging is outside its scope.

Method 1: Use an Online Tool (sakutto) — Recommended

The easiest and safest option is a browser-based online tool. sakutto requires no installation, no registration, and is completely free.

Steps

1. Open sakutto's PDF merge tool in your browser
2. Add the PDFs you want to merge (drag and drop, or click to select)
3. Drag files to reorder them
4. Click "Merge" and download the result

Why sakutto Is Recommended

Even if your company's security policy restricts software installations, a browser-only tool like sakutto works without any issues.

Method 2: Free Software (CubePDF Utility)

You can also install free software on your PC. CubePDF Utility is a popular choice for Windows.

Steps

1. Download and install CubePDF Utility from the official site
2. Launch the software and drag and drop your PDFs
3. Reorder files by dragging
4. Click "Merge" and choose a save location

Pros and Cons

• Pros: Works offline, local processing for safety, Japanese-language support
• Cons: Requires installation, Windows-only, watch for bundled software during setup

CubePDF Utility is Windows-only. For Mac or mobile, use an online tool like sakutto.

Method 3: Command Line (pdftk or PowerShell)

For users comfortable with the command line, or those who need to batch-process large numbers of PDFs, command-line tools are an option.

Using pdftk

pdftk is a command-line tool for PDF manipulation.

pdftk file1.pdf file2.pdf file3.pdf cat output merged.pdf

Wildcards work too — merge all PDFs in a folder with one command:

pdftk *.pdf cat output merged.pdf

Using PowerShell with Ghostscript

If Ghostscript is installed, you can merge from PowerShell:

& "C:\Program Files\gs\gs10.0\bin\gswin64c.exe" -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=merged.pdf file1.pdf file2.pdf

Pros and Cons

• Pros: Scriptable, automatable, handles large batches, no GUI needed
• Cons: Requires tool installation and PATH configuration, command-line experience needed

This is best for engineers and admins who want to automate recurring tasks. For a quick one-off merge, sakutto is far simpler.

Method 4: Adobe Acrobat (Paid)

Adobe Acrobat is the full-featured PDF editing standard. It handles merging, splitting, reordering, deleting, rotating, and annotating.

Steps

1. Open Adobe Acrobat, go to Tools → Combine Files
2. Add the PDFs you want to merge
3. Reorder as needed, then click "Combine"

Cost and Considerations

Acrobat Pro starts at around $20/month. If merging is all you need, it's overkill — free tools handle that just fine. But if you already have a subscription, take advantage of its merge feature.

Windows PDF Merge Methods: Comparison

When in doubt, go with sakutto — no installation, ready to use right now.

FAQ

Can Windows 11 merge PDFs with built-in features?

No. Windows 11 has no native PDF merge function. Microsoft Edge and Microsoft Print to PDF are for viewing and creating PDFs, not merging them. Use an online tool like sakutto or free software instead.

Do these methods work on Windows 10 too?

Yes. Every method in this article works on Windows 10. sakutto is browser-based, so it works regardless of your Windows version. CubePDF Utility and pdftk also support Windows 10.

Can Edge merge PDFs?

No. Microsoft Edge alone cannot merge PDFs. It can view, annotate, and print them, but combining multiple files is not supported. The easiest way to merge from Edge is to visit sakutto in the browser.

Is there free PDF merge software for Windows?

CubePDF Utility is the go-to free PDF merge software for Windows. It requires installation but supports Japanese and is easy to use. For an install-free option, sakutto works directly in your browser.

Are there security concerns with merging PDFs?

Some online tools upload your PDFs to a server for processing. When handling confidential documents, choose a tool like sakutto that processes files in the browser (via WebAssembly) and never sends them to a server. Local software like CubePDF Utility is also safe since it doesn't transmit files.

Summary

Windows 11 and Windows 10 don't include a built-in PDF merge feature, so you'll need an external tool. The easiest option is sakutto — a free, no-install, no-registration online tool that processes files entirely in your browser. Your files are never sent to a server, so there's nothing to worry about. Open your browser and try it now.