PrimeUtil

PDF Merge

Combine two or more PDFs into a single file in seconds. Reorder files before merging and download the result instantly. Processing is fully local in your browser for privacy.

Features

  • Merge any number of PDFs
  • Drag-free reorder with up/down controls
  • 100% client-side processing
  • No account or upload required

Frequently Asked Questions

How do I merge PDF files online for free?
Add two or more PDFs, put them in the order you want (top = first in the output), then merge and download. No account is required.
Are my PDFs uploaded to a server?
No. Merging uses your browser’s memory; files are not sent to PrimeUtil.
Can I change the order of PDFs before merging?
Yes. Use the move controls so the combined document follows your preferred page sequence.
Can I merge password-protected PDFs?
Not directly. Unlock or re-export them without encryption in a PDF app, then merge here.
Is there a file size or page limit?
Practical limits depend on RAM and browser. Huge files or many PDFs may be slow or fail on low-memory devices—try fewer or smaller files if that happens.

From our blog

Merge PDFs in Your Browser: Why Local Processing Matters

When combining PDFs, client-side tools reduce data exposure. What to expect for limits, order, and protected files.

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