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Merge PDF

Enable JavaScript to use this tool. Instructions and FAQs are available below.

Combine multiple PDF files into one document in the order you choose.

Files stay on this device. Close this tool to clear them. Maximum 50 MB per batch.

A LITTLE HELP, WHEN YOU NEED IT

How to use Merge PDF

  1. Choose two or more unencrypted PDF files.
  2. Use the arrows in the file list to arrange them.
  3. Create and download the merged PDF.

Need an example? Read the complete Merge PDF guide →

GOOD QUESTIONS. CLEAR ANSWERS.

Frequently asked questions

Can I choose the order of the merged files?

Yes. Move files up or down in the list before creating the result. Pages within each file keep their original order.

Is there an upload limit?

The browser tool accepts up to 50 MB total per batch. Processing also depends on available device memory. Files are not uploaded to a server.

Will bookmarks and digital signatures be preserved?

Combining PDFs copies pages into a new document. Document-level features may not survive, and existing digital signatures should not be considered valid on the new file.

Where are my documents processed?

This tool processes your files locally in your browser. Document contents are not uploaded to a server. The website host still receives ordinary connection information when you open the page.

PRIVATE BY DESIGN

Know where your files are processed.

The original PDF editing tools and Fill PDF form fields process documents in your browser. The seven server tools send submitted content to PDFDesk over HTTPS and return a download directly. Temporary processing files are removed when the request ends. We do not provide public links to your results. No analytics or advertising cookies are used.

The website host receives ordinary connection information when you open the site. Closing a tool clears its file references; downloaded results remain on your device.

Supports unencrypted PDFs, JPG/PNG images and DOCX files. Word conversion limitations are explained in each tool. Editing a digitally signed PDF can invalidate its signature. PDF-to-image output is limited to 100 pages per run.