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Free PDF Merger

Combine multiple PDF files into one, in the order you choose. Nothing is uploaded, everything happens on your device.

What this does: merges multiple PDF files into a single PDF, entirely in your browser using the pdf-lib JavaScript library. It is free, with no signup and no server upload: your files never leave your device.

Click to select PDF files or drag and drop them here.

You can add several files and reorder them below.

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    Frequently asked questions

    Is this PDF merger really free, and does it work in my browser?

    Yes. It is 100% free with no signup and no limits, and it runs entirely client-side in your browser using the pdf-lib JavaScript library. There is no server upload step: your PDFs are combined on your own device.

    Can I reorder the PDF files before merging them?

    Yes. After adding files, use the up and down arrow buttons next to each file in the list to change the order they will appear in the final merged PDF.

    Are my PDF files uploaded to a server?

    No. Everything happens locally in your browser using JavaScript. Your files are never transmitted anywhere, and the merge still works if you disconnect from the internet after the page has loaded.