Combine two or more PDFs into a single document. Everything happens on your device — nothing is uploaded anywhere.
Each PDF you add is read and combined directly in your browser using a JavaScript PDF library. Pages are copied over in the order your files are listed, then packaged into one new PDF you can download immediately.
Add two or more PDF files using the box above, arrange them in the order you want (they merge in the order shown), then click Merge & Download. The combined PDF downloads straight to your device.
There's no hard limit enforced by this tool, though very large combined files may take longer to process since everything runs in your browser rather than on a server.
No. Merging happens entirely inside your browser using JavaScript. Your PDF files are never sent to a server, which makes this a safe option for private or sensitive documents.
Need to go the other way? Try Split PDF or Rotate PDF, or see the full tools homepage.