Free PDF Merger Tool (Combine PDFs Instantly)
Join two or more PDFs into a single file – right in your browser. No uploads, no waiting, no data leaving your device.
Perfect for joining reports, invoices, scanned pages or forms into one tidy document.
Merge PDF Files
Select two or more PDF files and merge them into a single PDF you can download. Everything runs in your browser – your files never leave your device.
How to use the Black Swan PDF Merger
Select your PDF files
Click Select PDF files and choose at least two PDFs from your device.
Tip: hold Ctrl (Windows) or ⌘ (Mac) to pick several at once.Check the file order
The files will appear in the order you selected.
They’ll merge top to bottom — first file becomes page one, and so on.
(If you need to rearrange them, remove and reselect in the right order.)Name your new file (optional)
Enter a custom filename like2025-client-pack.pdf, or leave it blank and we’ll call itmerged-document.pdf.Click “Merge PDFs”
The tool will combine your files in-browser — nothing is uploaded anywhere.
When it’s ready, click Download merged PDF to save it locally.Privacy assurance
The entire process runs securely on your device.
Your documents are never sent, stored or viewed by anyone else.
For details about data handling on our site, see our Privacy Policy, Cookie Policy and Terms of Website Use.
Please try some of our other free PDF tools:
All of our tools run securely in your browser - no uploads, no logins, no data leaving your device. Simple, fast and GDPR-friendly.
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