Docento.app Logo
Docento.app
All Posts

How to Combine and Merge PDF Files Online for Free

August 10, 2025

You have three scanned receipts, a cover page, and a final report, all saved as separate PDFs. Now you need to send them as a single, organized document. Combining (or merging) PDF files is a common task, but it can be frustrating if you don't have the right tools.

This guide will show you how to merge multiple PDF files into one, for free, using online tools.

Why Merge PDFs?

  • Organization: Keep related documents together in one file.
  • Convenience: It's much easier to send, receive, and review one file instead of many.
  • Professionalism: A single, well-ordered document looks more professional than a folder full of separate files.

How to Combine Your PDFs Online

While Docento.app focuses on signing and annotating existing PDFs, the PDF ecosystem is full of specialized tools. For merging files, many of the services we mentioned in our Top 5 Free PDF Editors guide offer free and easy-to-use merging tools.

Here’s the typical process:

  1. Choose a Merging Tool: Visit a site like iLovePDF or Smallpdf.
  2. Upload Your Files: Drag and drop all the PDF files you want to combine into the tool. Most tools allow you to upload multiple files at once.
  3. Order Your Files: Once uploaded, you'll see thumbnails of your documents. You can drag and drop them to arrange them in the correct order.
  4. Click Merge: Hit the "Merge PDF" or "Combine" button. The tool will process your files and create a single PDF.
  5. Download Your File: Download the new, combined PDF to your computer.

After You Merge...

Once you have your newly combined PDF, you might need to make a few final touches. That's where an editor like Docento.app comes in. You can easily:

  • Add Page Numbers: (A feature we hope to add soon!) Manually add page numbers using the Text Tool.
  • Add a Signature: If your combined document is a contract or report, you can add your signature in seconds.
  • Add Annotations: Add comments or highlight important sections.

Combining PDFs is a simple