Step by Step

1. Add
Click the "Add PDF" button and choose the PDF files you want to merge. You can select multiple files at once by holding down the Ctrl or Shift key.

2. Sort
Arrange the files in the order in which you want to merge them by dragging and dropping them with your mouse.

3. Merge
Click the "Merge PDF" button to combine the files. The download will start automatically.

Free and Unlimited

With MergePDF.one, you can merge your PDF files without any cost or limitations. There are no restrictions on file size or the number of PDF files you can merge.

Maximum Security and Privacy

Thanks to client-side processing, your PDF files are not sent to the server, ensuring a high level of privacy and data security.

Easy Merging of PDF Files

Using MergePDF.one is easy - simply select the PDF files, set the order, and click "Merge PDF"!

Merge PDFs without Quality Loss

With our online tool, MergePDF.one, you can merge your PDF files without any compression or loss of quality.

Merge PDFs from Any Device

Our platform-independent solution offers you the freedom and flexibility to merge your PDF files from anywhere, without worrying about compatibility issues.

No Installation Required

With our free online tool, MergePDF.one, you can easily merge multiple PDF files into one without downloading or installing any software.

MergePDF.one - Safe, Free, Unlimited

Are you looking for a free and unlimited tool to merge PDF files across platforms and arrange them in the desired order? Then MergePDF.one is the right tool for you! Our online tool allows you to merge your PDF files quickly and easily, without worrying about data privacy. At MergePDF.one, your files are processed client-side and not transmitted to our server, ensuring their security. And the best part is that our tool is optimized for smartphones, allowing you to merge PDF files on the go.Whether you're a Mac, Windows, Linux, or smartphone user, with MergePDF.one, you can merge your PDF files across platforms, without worrying about compatibility issues. Our online tool is designed to work seamlessly on all devices and operating systems, making it easy for you to merge your PDF files from anywhere.

At MergePDF.one, we are committed to providing you with a safe, free, and unlimited tool for merging your PDF files. Our platform-independent solution ensures that you can merge your PDF files without any limitations or additional costs. With our user-friendly interface and step-by-step instructions, you can quickly and easily merge your PDF files in just a few clicks.

So why wait? Try MergePDF.one today and enjoy the convenience of merging your PDF files without any hassle or restrictions!

Security First

Other Providers

Server-side Processing

After the browser downloads the page, in server-side processing, the PDF documents are uploaded to the operator's server and merged together by the server itself. The merged document is then downloaded from the server.

During the upload and download of the PDF documents, if communication is not sufficiently secured, the documents can be intercepted and misused. In addition, in server-side processing, one must rely on the server operator to delete the uploaded documents from the server to ensure data protection and security.

Our Platform

Client-side Processing

In contrast to server-side processing, in client-side processing, the PDF documents are merged directly in the user's browser without having to upload the documents to a server. This offers the advantage that the documents do not need to be transmitted over unsecured communication channels during processing, which minimizes the risk of interception and misuse of the documents.

Since the documents are not uploaded to a server, there is no need to rely on the server operator to delete the documents after processing. Client-side processing thus provides higher data security and privacy for users.