Tool Fu
$ toolfu run combine-pdf

Combine PDF — Join Multiple PDFs Into One File

Combine PDF files into one document online. Join multiple PDFs, reorder pages, and download — free, private, no upload needed.

all processing runs in your browser
combine-pdf
input > drop or select PDF files to merge

$ drop PDF files here or click to browse

select multiple PDF files to combine

or paste from clipboard (⌘V / Ctrl+V)

Combine PDF Files Online — Free PDF Joiner

Join multiple PDF documents into a single file in seconds. Everything runs in your browser — no upload, no account required.

Steps to combine PDFs

  • Drop or select the PDF files you want to join
  • Drag to reorder if needed
  • Click combine and download your joined PDF
$ cat FAQ.md
How do I combine PDF files?▶
Add your PDF files by dragging them in or clicking to select. Arrange them in the order you want, then click combine. The joined PDF downloads instantly.
Can I combine PDFs on my phone?▶
Yes. This tool works in any modern browser including mobile Safari and Chrome. Select files, combine, and download right from your phone.
Are my files safe?▶
Completely. All processing happens in your browser. Your PDFs are never uploaded to any server — they stay on your device the entire time.