How to Merge PDF Files on Windows 10/11
Unlike Mac, Windows doesn't have a built-in Preview-style PDF merger. But there are three good free options — and the browser-based tool is the easiest one.
Fastest option — works in Edge, Chrome, Firefox on Windows 10/11
Merge PDF Free →Method 1: Browser Tool (Recommended for Windows)
The fastest, highest-quality option. Works in Microsoft Edge, Chrome, Firefox, and any modern browser. Files are processed locally using JavaScript — nothing is uploaded.
- 1Open your browser and go to irreva.app/merge-pdf.
- 2Click to upload or drag your PDF files into the upload area.
- 3Drag the file rows to reorder them if needed.
- 4Click Merge PDF.
- 5Click Download to save the combined PDF.
Method 2: Microsoft Print to PDF (Built-in, No Software)
Windows 10 and 11 include a virtual printer called "Microsoft Print to PDF." You can use it to combine PDFs by printing them one after another into a single file — but note that this re-renders pages, which may slightly affect quality.
- 1Open the first PDF in Microsoft Edge (the default PDF viewer on Windows).
- 2Press Ctrl+P to open the print dialog.
- 3Select Microsoft Print to PDF as the printer.
- 4Click Print and save the file.
- 5Open the second PDF, print it to PDF as well, appending if your PDF viewer supports it.
- 6Note: Edge doesn't natively append pages. For multi-file merging, the browser tool (Method 1) is more reliable.
Method 3: PowerShell (For Developers)
For command-line users, you can install PdfSharp or iTextSharp via PowerShell:
# Install PDFtk (download installer from pdftk.com) then:
pdftk file1.pdf file2.pdf cat output merged.pdf
# Or use Python (if installed):
pip install PyPDF2
python -c "
from PyPDF2 import PdfMerger
m = PdfMerger()
m.append('file1.pdf')
m.append('file2.pdf')
m.write('merged.pdf')
m.close()
"Frequently Asked Questions
Does Windows 10/11 have a built-in PDF merge tool?
Not exactly — Windows doesn't have a direct 'merge PDFs' option. The closest built-in option is Microsoft Print to PDF, which lets you print multiple pages into a new PDF, but it re-renders the content which can affect quality. The browser-based tool is the better free option for Windows users.
Can I merge PDFs on Windows without installing software?
Yes. The browser-based tool at irreva.app/merge-pdf works in Edge, Chrome, Firefox, or any modern browser on Windows. No installation required, and files never leave your device.
Does merging PDFs reduce quality on Windows?
The browser-based tool preserves original quality — it copies pages directly using pdf-lib without re-encoding. The Microsoft Print to PDF method re-renders pages through the Windows print system which can slightly reduce quality.
Can I merge password-protected PDFs?
Unlock the PDFs first using the PDF Unlock tool, then merge them. You need to know the password — this cannot bypass unknown passwords.