How to Merge PDF Files Into One (Free)
July 25, 2026 · 3 min read
Applications, contracts and reports often need to arrive as a single PDF — but you have three or four separate files. Merging them into one clean document takes seconds and looks far more professional than sending a pile of attachments.
Here's how to combine PDFs for free, get the order right, and do it without handing your files to a stranger's server.
Recommended tool
Merge PDF
Combine several PDFs into one document, in the order you choose — free, no upload, no sign-up, right in your browser.
Open Merge PDFWhy send one file instead of several
A single PDF is easier for the other person to open, print and store — and many upload forms only accept one file. Merging also lets you control the exact order pages appear in, so your cover letter comes before your resume, or your invoice before its receipts.
Get the order right before you merge
The order you add files isn't always the order you want. A good merge tool lets you rearrange the files first — move each one up or down — so the final document reads correctly from start to finish. Check the order once before you download.
Keep your files private
Many online mergers upload your documents to their servers. A browser-based tool does the combining on your device, so sensitive files — like signed contracts or application documents — never leave your computer.
FAQ
Is merging PDFs free?
Yes. You can combine PDFs for free with no sign-up and no watermark.
Can I choose the order of the files?
Yes. Add your files, then move each one up or down until the order is right before you merge.
Is there a limit on how many I can merge?
There's no fixed limit. Very large files depend on your device's memory, since the work happens locally in your browser.
Do you upload my PDFs?
Not with a browser-based tool — the merge happens on your device and your files never leave your computer.
Recommended tool
Merge PDF
Combine several PDFs into one document, in the order you choose — free, no upload, no sign-up, right in your browser.
Open Merge PDF