Merge PDF

Merge multiple PDF files into one document free. No upload, no signup, no limits. Drag and drop to reorder and combine. 100% browser-based.

How to Use Merge PDF

  1. Upload two or more PDF files by dragging them into the merge zone.
  2. Reorder the files by dragging them into your desired sequence.
  3. Click Merge PDF to combine all documents into one.
  4. Download the merged PDF file — ready to share or archive.

Why Choose Krynn Tools for Merge PDF?

  • Unlimited Merging: Combine as many PDF files as you need into a single document without any restrictions.
  • Drag-and-Drop Reordering: Visually arrange pages or entire documents in the exact order you want before merging.
  • 100% Private: All merging happens in your browser. Your sensitive documents are never uploaded to any server.
  • Preserves Quality: Text, images, fonts, and layouts are preserved exactly as they appear in the original files.

Frequently Asked Questions

Is there a limit to how many PDFs I can merge?

No. You can merge two PDFs or twenty — the tool handles any number of files. The only practical limit is your browser's memory.

Will merging compress my PDFs?

No. Merging combines files without altering their internal structure. If you need to reduce the combined file size, use our Compress PDF tool afterward.

Can I merge PDFs with different page sizes?

Yes. The tool handles mixed page sizes and will preserve each page's original dimensions in the merged output.

Does this work on mobile?

Yes. The merge tool is fully responsive and works on iOS Safari, Android Chrome, and any modern mobile browser.