PDFBox

Merge PDF

Combine multiple PDF files into one document.

How it works

  1. 1

    Choose the PDF files you want to combine

  2. 2

    Arrange them in the order you need

  3. 3

    Download the merged PDF

Why PDFBox

Fast

Files are processed on your device, so there is no upload wait and no queue.

Private

Live tools run entirely in your browser — your PDFs never leave your device.

Easy to use

One tool per page, no accounts, no clutter and no setup to work through.

Frequently asked questions

Is Merge PDF free to use?
Yes. The tool is completely free, with no account, no watermark and no daily limit.
Will my files be uploaded to a server?
No. Everything happens locally in your browser using JavaScript, so your PDF never leaves your device.
Do I need an account?
No. PDFBox has no accounts, no sign-up and no email required to use a tool.
Is there a file size limit?
There is no fixed limit, but very large PDFs depend on the memory your browser and device can spare.
Which devices are supported?
Any modern browser on desktop, tablet or phone. The layout adapts to small screens.