How to Combine or Merge Multiple PDF into One File Easily

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  • Updated On:
    September 1st, 2025
  • Read Time:
    5 minutes

Summary: A business professional was creating a client proposal that included multiple separate documents. Sending individual files will be confusing. Therefore, he looked for ways to merge multiple PDF into one cohesive document. In this comprehensive blog, we will show you manual methods and automated, using the PDF Merge Tool to merge PDFs. The tool will effectively merge multiple PDFs into one without altering the original content. Now, let’s begin exploring the solutions and understanding them in more detail. 

Why Do Users Combine PDFs into One PDF?

To make information more accessible and manageable, merging PDFs into a single PDF document is recommended. Below, we have highlighted certain reasons where users might merge them:

  • Instead of sending several PDF files, merge them into one PDF to easily share and access them. 
  • By combining multiple related documents into one cohesive and polished document.
  • When a user stores the PDF files for future reference, merging them into one PDF will offer better organization. 
  • For better management and saving time, it is a great option to merge the related PDFs into one. 
  • Rather than archiving several PDF files for record-keeping, merge them into one PDF backup file. 

Ways to Merge Multiple PDF into One

Method 01: Use Adobe Acrobat (Paid Version) to Merge PDF into One PDF

This is a reliable method that easily merge multiple PDF into one PDF document. It preserves both formatting and quality as well.

These are the steps to begin the merging process:

  1. Start by launching Adobe Acrobat on your system.
  2. Then, click on File > Create > Combine Files into a Single PDF.
  3. Next, tap on the Add Files button to add multiple PDFs you wish to merge.
  4. You can now arrange the files for better readability.
  5. At last, tap on the Combine button. 

Method 02: Using Preview (Mac) to Merge Two PDFs into One

This method is suitable for macOS users. Preview is pre-installed on it and can easily combine PDFs. 

Perform the following steps to begin the process:

  1. First, open the Preview app and then open one of the PDFs in it.
  2. After that, go to the View tab and click on Thumbnails.  
  3. Then, drag and drop the other PDFs into it and arrange them as needed.
  4. After arranging, navigate to File > Export as PDF to save it. 

Shortcomings of the Manual Methods

  • To use Adobe Acrobat, one must purchase the Pro version. This can be expensive for a free manual process.
  • While using the Preview app on macOS, managing very large files can make the process slower.
  • The Preview app method will only work on Mac and not on Windows.

Automated Tool to Merge Multiple PDF into One

A PDF Merge Tool is a powerful solution that combines multiple PDFs into one well-structured document. Not only this, but it also provides PDF details like file location, size, number of pages, etc. Users can also refine their final PDF document by modifying the metadata, like title, author, subject, etc. The tool also supports encrypted PDFs after entering the correct password. With its page range settings, users can choose the selected portions or rearrange the order of the pages. 

Quick steps to combine multiple files into one PDF:

  1. Download the tool and run it as an administrator.
  2. Now, tap the Select PDF button to add the PDFs from your computer. Then, click Open.
  3. Next, check the PDF details and their order. Click Next to continue. 
  4. After that, tick the PDF File description and modify the properties if you want to.
  5. Press on Path To Save to choose the folder to save the resultant file.
  6. Finally, click on the Merge button to start merging your PDFs.

Conclusion

Enterprises often merge multiple PDFs into one for easy sharing and accessibility. The free manual methods are available for quick and occasional tasks to merge multiple PDF into one. But they lack advanced features. On the other hand, the professional PDF Merge Tool provides greater flexibility and speed. It includes advanced features such as page-range settings, merging encrypted files, and much more. Users have the option to choose the method according to their needs.
You May Also Read: How to Password Protect Multiple PDF Files

Frequently Asked Questions

Q- Can I merge password-protected PDFs?

Ans- By using the automated tool, one can easily merge the encrypted PDF files. But you must first enter the correct password to unlock the files. Once unlocked, they can be merged into a new PDF.

Q- How do I merge PDFs for free?

Ans- There are three ways to do it. One is by using an online converter tool. Second, with the help of Adobe Acrobat Pro version. Also, for macOS users, through the Preview app, the merging is done. Lastly, using the automated tool to efficiently merge the PDFs.

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About The Author:

Sachin Prajapati is an experienced technical content writer with a passion for simplifying complex topics. Specializing in email and cloud migration solutions, he crafts informative and reader-friendly content that empowers users to understand and manage their digital tools more effectively. His insights have been featured on several respected tech platforms, earning the trust of a wide audience.

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