How to Combine PDFs on Windows 10 and 11 for Free
September 8, 2026
Windows can open, print and save PDFs, but neither Windows 10 nor Windows 11 can combine them out of the box, and Microsoft Edge's PDF viewer has no merge button either. So "how do I merge PDFs on Windows" really means "which free tool should I use". Here are the options, from no-install to installed, with the trade-offs of each.
The quickest free way: merge in your browser
You already have a browser, so this needs no download and no admin rights. That makes it a good fit for work and school PCs.
- Open Merge PDF in Edge, Chrome or Firefox.
- Select your PDFs in File Explorer (hold Ctrl and click each one) and drag them onto the drop area. Or click the drop area and pick them in the Open dialog, again with Ctrl+click.
- Set the order with the up and down arrows next to each file. Add more files any time by dropping them in.
- Click Merge. The combined file saves to your Downloads folder as
merged.pdf.
Press Ctrl+J in the browser to open your downloads list and find the file straight away. Rename it in File Explorer with F2.
The merge runs inside the browser on your PC, so the files aren't uploaded. If you're combining contracts, payslips or anything confidential on a work machine, that keeps them off third-party servers.
The Edge "print" workaround (only for two or three files)
People often suggest combining PDFs with Microsoft Print to PDF. It doesn't merge files directly; it only re-prints one document at a time into a new PDF. You end up repeating print-and-save steps for each file, and anything beyond two or three files gets tedious. Re-printing can also drop clickable links and fillable form fields. It works in a pinch, but a merge tool is simpler and keeps the original pages intact.
Installed apps
If you merge PDFs every day, a desktop app can be worth installing. There are free and open-source PDF programs that run fully offline (PDFsam Basic is a well-known one). Things to check before installing anything:
- Bundled extras. Some free installers try to add toolbars or other software. Download only from the developer's own site and read each installer screen.
- Watermarks and limits. Some "free" PDF editors add a watermark or limit the number of files until you pay.
- Admin rights. On a work or school PC you often can't install software at all. The browser method avoids that.
Which option to use
| Situation | Best option |
|---|---|
| Merging now and then, on any PC | Merge PDF in your browser |
| Work or school PC where you can't install software | Merge PDF in your browser |
| Just two short files and nothing else to hand | Edge + Microsoft Print to PDF |
| Heavy daily use, very large batches, scripting | An installed desktop app |
Merging problems on Windows
One file causes an error. It's password-protected or restricted, which is typical for bank statements and some company documents. Unlock it with Remove Password (you need the password), then merge again.
Files are in the wrong order. In Merge PDF, the order is exactly what the list shows, so move files with the arrows before merging. To move single pages afterwards, use Organize Pages.
The merged PDF is too large to email or upload. Run it through Compress PDF. Choose Target size and enter the limit, like 10 MB for email or 2 MB for a portal.
Some pages are sideways. Scans often come in rotated. Fix them with Rotate PDF before or after merging.
FAQ
How do I combine PDF files on Windows 11 for free? Windows 11 has no built-in merge tool. The free no-install option is Merge PDF in Edge or Chrome: drop in the files, set the order, click Merge.
Is it the same on Windows 10? Yes. Neither version can merge PDFs on its own, and the browser method works identically on both.
Can I merge PDFs in Microsoft Edge? Edge can open and print PDFs but has no merge feature. You can use a merge website in Edge, like Merge PDF, which runs in the browser without uploading files.
Can I merge PDFs without uploading them? Yes. Merge PDF combines the files in your browser. You can check this yourself: open the browser's developer tools (F12), go to the Network tab, and merge. No upload request appears.
How many PDFs can I merge at once? There's no fixed limit. Very large batches are limited only by your PC's memory.