How to Merge PDF Files on Windows (Free, In-Browser)

A contract here, a scanned signature page there, an exported report — and you need to send them all as a single PDF. Windows 10 and Windows 11 do not include a built-in tool to merge PDFs, so a lot of people end up paying for Adobe Acrobat or wrestling with confusing desktop apps. You do not need to do either.

Here is how to merge PDF files on Windows for free, without installing software.

What Windows offers out of the box

• Microsoft Edge opens and reads PDFs but cannot combine files
• Microsoft Print to PDF re-saves a single file but cannot merge multiple PDFs
• Microsoft Word can open a PDF but reformats complex layouts during the round-trip
• No built-in merger exists in Windows 10 or 11

Merge PDFs on Windows in your browser

Use a browser-based merging tool in Edge or Chrome, pull in all your PDFs, arrange them, and download one combined file:

1. 1Open the Merge PDF tool in Edge or Chrome on your Windows PC.
2. 2Drag your PDF files from File Explorer into the upload area, or click to browse and select them — you can add as many as you need.
3. 3Drag the thumbnails to set the order you want the pages to appear.
4. 4Click merge and review the combined document.
5. 5Download the merged PDF and share it.

Because the merge runs in your browser, the files are processed on your device — they never have to be uploaded to a server, which matters when the PDFs contain personal information.

Merging scans and images into the mix

You are not limited to PDFs. If a scanned page exists as a JPG or HEIC image, convert it to a PDF first and add it to the merge, so a photographed signature page or diagram sits in the right place in the combined document.

Check the result before you send it

After merging, open the final PDF and flip through it once to confirm the pages are in the right order and nothing is missing. Keep the original files until you are happy, so you can always start over. If the merged file comes out too large to email, compress it after merging rather than reworking the whole document.