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📑 Merge PDF

Combine several PDF files into one document in the order you select. Fully in-browser, so files stay private.

About this Merge PDF

Merge PDF joins multiple PDF documents into a single file, keeping the page order of the files as you selected them. It is ideal for combining a CV with certificates, or several scanned pages into one attachment. The merging library runs entirely in your browser, so confidential documents are never uploaded to a server.

How to use it

  1. Select two or more PDF files (hold Ctrl or Cmd to pick several).
  2. Press Merge PDFs and wait a moment.
  3. Check the page count in the result message.
  4. Download the combined merged.pdf file.

Example

A 2-page application form plus a 1-page ID scan becomes one tidy 3-page PDF for an online submission.

Frequently asked questions

In what order are the files merged?

In the order your device lists the selected files, usually alphabetical by name. Rename files with 01-, 02- prefixes if order matters.

Is there a file size limit?

There is no set limit, but very large PDFs (hundreds of MB) can strain browser memory on older phones.

Are my documents uploaded?

No. The pdf-lib library processes everything locally on your device.

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