Merge PDF

Combine multiple PDF files into one. Drag to reorder.

Add PDFs or drop them here

or click to browse

Files are processed locally: nothing is uploaded.

Merge PDF Files

Combine multiple PDF files into one document directly in your browser.

  • Files stay on your device.
  • Processed locally in your browser.
  • No uploads. No storage.

Merge PDF combines two or more documents into one downloadable PDF without changing the source files on your device.

The output follows the file order shown in the workspace. You can keep the upload order, reverse it, sort by filename, or arrange files manually before processing.

What you can do

  • Preview, add, remove, and reorder source PDFs.
  • Insert a blank separator page between documents.
  • Choose the output filename before merging.

Before you start

  • At least two readable PDF files are required.
  • Encrypted, empty, or damaged files are rejected during validation.
  • Large combined files require enough browser memory to hold the sources and output.

How it works

  1. Choose the PDF files you want to combine.
  2. Arrange the files in the order you need.
  3. Merge and download the combined PDF.

Common questions

Do my files upload while merging PDFs?

No. VaultPDF merges files locally in your browser for core PDF workflows.

Can I reorder files before merging?

Yes. After selecting files, you can arrange them before creating the merged PDF.