Is it safe to merge sensitive PDF files here?

Yes, 100% safe. ScanFlow processes your files entirely within your web browser. Your files are NEVER uploaded to any server.

Is this tool completely free?

Yes, our tool is completely free to use with no hidden limits.

Merge PDF files locally

Upload multiple PDF documents, combine them into one file, and download the result without sending anything to a server.

Accepts PDF files only. You can add as many as you need.

100% Private: Files are processed offline in your browser. No server uploads.

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Add at least two PDFs to begin.

Download once the merge is complete.

Merge results will appear here.