Merge PDF Files on Windows
Combine several PDFs into a single document, in exactly the order you want.
- ✓Files never uploaded
- ✓No file limits
- ✓No sign-up
- ✓No watermark
Windows has a great built-in PDF viewer in Microsoft Edge, but it can't combine several PDFs into one. That's why people usually end up searching for a free PDF merger for Windows, and then find desktop programs full of upsells or websites that want their files uploaded. pdfdots gives you a third option: a merger that runs inside Edge, Chrome or Firefox but processes everything locally on your PC, so it's as private as installed software without the installation.
To merge on Windows 10 or Windows 11, open this page, then drag your PDFs from File Explorer onto the drop area — you can select several at once with Ctrl or Shift. Arrange them with the up and down buttons, click Merge PDF and the finished document is saved to your Downloads folder. It also works on locked-down office computers where you're not allowed to install programs, and on older laptops, because the heavy lifting is simple page copying rather than re-rendering.
A common Windows workaround is to print documents to Microsoft Print to PDF, but that only handles one document at a time and flattens the file, so links and selectable text can suffer. Merging here keeps every page exactly as it was. If you need Word or Excel files in the mix, save them as PDF from Office first (File > Save As > PDF), then combine them all here. Afterwards you can compress the result or add page numbers without leaving the browser.
Tip: Windows sorts files alphabetically in File Explorer, so the selection order may not match the order you want in the final document. Always check the list before clicking Merge PDF and fix it with the arrows.
How to Merge PDF
- 1Drop two or more PDF files into the box, or click to choose them.
- 2Use the up and down arrows to put the files in the right order.
- 3Click Merge PDF and your combined file downloads automatically.
Why pdfdots?
Private by design
All processing happens locally in your browser. Your documents are never uploaded to a server, so nobody else can see them.
No limits
No daily task caps, no file-count limits and no premium tier. Process as many PDFs as your device can handle.
Fast
There's no upload or download queue. Work starts the moment you drop a file and finishes at the speed of your own computer.
Works everywhere
Windows, Mac, Linux, iPhone, Android or Chromebook — if it has a modern browser, pdfdots runs on it. Nothing to install.
Combining PDFs without uploading them
Merging is one of the most common PDF jobs: a cover letter plus a CV, a contract plus its signed annexes, a stack of monthly invoices that your accountant wants as one file. Most online mergers send every document to a remote server first. pdfdots does the whole job inside your browser tab, so a confidential agreement or a bank statement is never copied anywhere. You can even disconnect from the internet after the page loads and the merge will still work.
The merged document keeps the original pages exactly as they were. Text stays selectable and searchable, links and vector graphics are preserved, and there's no loss of image quality because nothing is re-rendered. Pages simply get copied from each source file into a new PDF in the order shown in the list. If you need to fine-tune the order of individual pages rather than whole files, merge first and then open the result in Organize PDF, where you can drag page thumbnails around and delete the ones you don't need.
There is no cap on how many files you add or how large they are; the practical limit is your device's memory. On a typical laptop, merging dozens of files with hundreds of pages takes a few seconds. If the final file is too big for an email or an upload form, run it through Compress PDF afterwards. Password-protected PDFs need to be unlocked before they can be combined.
Our take
We reach for Merge PDF most often at the very end of a paperwork job: a rental application where the landlord wants ID, payslips and a reference letter as one attachment, or an expense claim where every receipt has to travel together.
Our habit is to name the files 01, 02, 03 before dropping them in, so the list already arrives in the right order and the arrows are only for small fixes. We merge first and do everything else, like page numbers or compression, on the combined file.
The pitfall we see most is merging one password-protected file into the stack; it simply cannot be read until it is unlocked with Unlock PDF. And if you need to move single pages rather than whole files, Organize PDF is the better tool after the merge.
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Frequently asked questions
Can Windows merge PDFs without extra software?+
Windows itself can't combine PDFs, but this page does it in Edge or Chrome without installing anything.
Does this work on Windows 10 and Windows 11?+
Yes. Any recent version of Edge, Chrome or Firefox on Windows 10 or 11 works.
Can I use it on a work PC where I can't install programs?+
Yes. It needs only a browser, and your files never leave the computer.
How do I add Word documents to the merge?+
Save each Word file as PDF first using File > Save As > PDF, then merge the PDFs here.
Is it safe to merge confidential PDFs here?+
Yes. The files are processed locally in your browser and are never uploaded, so no server ever receives a copy.
How many PDFs can I merge at once?+
There is no fixed limit. You can add as many files as your device's memory can handle, which is usually dozens or more.
Will merging reduce the quality of my PDFs?+
No. Pages are copied as they are, so text, images and links stay exactly the same as in the originals.
Can I change the order of the files?+
Yes. Use the up and down buttons next to each file before merging. To reorder individual pages, use Organize PDF on the merged file.
Does the merged PDF get a watermark?+
No. pdfdots never adds watermarks, and there's no paid version with extra features.
Can I merge PDFs on my phone?+
Yes. The tool works in mobile browsers like Safari on iPhone and Chrome on Android, with nothing to install.