ThoseBoringTools
📄 Document Tools

Merge PDF Files

Combine multiple PDF files into a single document, in the order you choose — processed entirely on your device, nothing is uploaded.

Add PDF files to merge

Click to browse, or drag and drop

How to use this tool

  1. 1Add two or more PDF files.
  2. 2Drag to reorder them if needed.
  3. 3Click Merge and download the combined PDF.

Frequently asked questions

Are my files uploaded to a server?
No. Merging happens entirely in your browser using WebAssembly — your files never leave your device.
Is there a file size or page limit?
There's no artificial limit imposed by this tool, but very large PDFs (hundreds of MB) may be slow or hit your browser's memory limits, since everything runs on your device rather than a server.
Will this work with password-protected PDFs?
No, encrypted or password-protected PDFs need to be unlocked first before they can be merged.

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