How to Combine PDF Files on Windows Without Acrobat

Windows 10 and 11 can open, print and annotate PDFs in Microsoft Edge, but they can't combine several PDFs into one. The free Adobe Acrobat Reader can't either — combining files is a paid Acrobat feature. The simplest free option is a browser tool: drag your PDFs onto the PDF Merger, arrange them, and download one file. Nothing needs installing and the files aren't uploaded anywhere.

Combine PDFs in Edge or Chrome

1. Open the PDF Merger in Microsoft Edge, Chrome or Firefox.
2. Open File Explorer next to the browser window, select your PDFs (hold Ctrl and click each one, or Shift-click a range) and drag them onto the box that says Click, drop or paste PDF files. You can also click the box and choose the files in the dialog.
3. Look at the list: every file shows its size and page count. Move files up or down with the arrows, or click Sort by file name if they're numbered.
4. Click Merge and then Download merged PDF.

The result is saved as merged.pdf in your Downloads folder. In Edge or Chrome, press Ctrl+J to open the downloads list, then click Show in folder.

Why there's no "merge" option in Windows

It's a common surprise. Windows includes a PDF viewer (Edge) and a PDF printer (Microsoft Print to PDF), but neither combines files:

• Microsoft Edge opens one PDF per tab. You can draw, highlight and add text, but not insert pages from another document.
• Microsoft Print to PDF prints one document at a time, so printing two PDFs gives you two new PDFs.
• Microsoft Word can open a PDF, but it converts the pages into an editable document, and layouts often shift. It's the wrong tool for joining finished PDFs.
• Acrobat Reader shows a Combine Files button, but it asks you to upgrade before it does anything.

A browser-based merger fills the gap without installing anything, which also helps on a work laptop where you can't install software.

Getting the order right

The merger joins files from top to bottom, so the list order is the page order of the final PDF. Two habits make this painless:

• Name files with numbers first — "01 Cover letter.pdf", "02 CV.pdf", "03 Certificates.pdf". Then a single click on Sort by file name puts them in order, and it sorts 2 before 10 the way you'd expect.
• Check the page counts. If your CV should be two pages and the list says one, you've picked the wrong version — far better to notice before you send it.

If you need to move individual pages rather than whole files — say, the signature page of one document into the middle of another — merge first and then fix the order with Rearrange PDF Pages. Unwanted blank pages can be dropped with Remove PDF Pages.

Combining Word, Excel and PDF files together

The merger takes PDFs only. If some of your documents are Word or Excel files, convert them first with Excel / Word to PDF, or in Word itself choose File › Save As and pick PDF. Then merge all the PDFs together. Photos or scans saved as JPG can be turned into a PDF with Image to PDF.

Making the merged file smaller

Joining several scans can produce a file too big for email (Outlook and Gmail both cap attachments at around 20–25 MB). Run the merged PDF through Compress PDF, which shows the new size before you download. If it's still too large, the size is usually in scanned images — re-scan at a lower resolution, or split the document and send it in two parts.

Frequently asked questions

Is it safe for work documents?

Yes. The merging happens inside your browser on your own PC; the files aren't uploaded to a server. That matters for contracts, payslips and HR documents, and it's often what company IT policies require.

How large can the files be?

There's no fixed limit. Hundreds of pages are fine on a normal PC; extremely large scans depend on your computer's memory. If a very big merge fails, combine the files in two batches and then merge the two results.

Can I merge password-protected PDFs?

Not while they're locked — they're marked Password-protected in the list. If you know the password, remove it with Unlock PDF and add the unlocked copy.

Does it work offline?

Once the page has loaded, merging doesn't need the internet, so a slow or flaky connection isn't a problem.