How to Join Multiple PDF Files into One on Mac

Joining multiple PDF files into one is a common need for many Mac users. Whether you want to merge all your invoices into a single document or combine multiple chapters of an e-book, knowing how to merge PDF files can save you time and effort. In this blog post, we will explore different methods to join multiple PDF files into one on a Mac, as well as their pros and cons.

What’s Needed

To merge PDF files on a Mac, you will need the following:

  • Mac computer
  • PDF files to be merged
  • An internet connection (optional, depending on the method you choose)

Video Tutorial:

What Requires Your Focus?

Before we dive into the methods, here are a few key points to consider:

  • File size: If your PDF files are large, merging them into a single document may result in a larger overall file size.
  • Confidentiality: If the PDF files contain sensitive information, make sure to use a secure method to merge them.
  • Quality: Some merging methods may affect the quality or resolution of the PDF files, so it’s important to choose a method that preserves the original quality.

Option 1. How to Merge PDF Files via Preview

Preview is a built-in application on Mac that allows you to view and annotate PDF files. It also offers basic features for merging multiple PDF files. Here’s how you can use Preview to merge PDF files:

1. Open the first PDF file in Preview.
2. Go to "View" in the menu bar and select "Thumbnails" to show the thumbnail sidebar.
3. Drag and drop the additional PDF files into the thumbnail sidebar in the order you want them to appear in the merged document.
4. Save the merged document by going to "File" in the menu bar and selecting "Export as PDF".
5. Choose a location to save the merged PDF file and click "Save".

Pros:
– Preview is a free and readily available application on Mac.
– It allows you to rearrange the order of the pages in the thumbnail sidebar before merging.

Cons:
– Preview’s merging capabilities are limited compared to dedicated PDF merging tools.
– It may not handle very large PDF files efficiently.

Option 2. How to Merge PDF Files via Smallpdf

Smallpdf is a popular online platform that offers a range of PDF tools, including the ability to merge multiple PDF files. Here’s how you can use Smallpdf to merge PDF files:

1. Go to the Smallpdf website (www.smallpdf.com) in your web browser.
2. Click on the "Merge PDF" tool.
3. Drag and drop the PDF files you want to merge into the designated area on the Smallpdf website. You can also upload files from Dropbox or Google Drive.
4. Rearrange the order of the PDF files if needed.
5. Click on "Merge PDF" and wait for the merging process to complete.
6. Download and save the merged PDF file to your Mac.

Pros:
– Smallpdf is a convenient online solution that doesn’t require any software installation.
– It supports merging large PDF files and offers additional features like PDF compression and conversion.

Cons:
– Smallpdf’s free version has some limitations, such as a maximum file size limit and watermarked output files.
– It requires an internet connection to access the Smallpdf website.

Option 3. How to Merge PDF Files via Adobe Acrobat DC

Adobe Acrobat DC is a professional PDF editing software that offers advanced features, including the ability to merge multiple PDF files. If you have a subscription to Adobe Acrobat DC, here’s how you can use it to merge PDF files:

1. Open Adobe Acrobat DC on your Mac.
2. Go to "Tools" in the menu bar and select "Combine Files".
3. Click on "Add Files" to select the PDF files you want to merge.
4. Adjust the order of the PDF files if needed.
5. Click on "Combine Files" to start the merging process.
6. Save the merged PDF file to your desired location.

Pros:
– Adobe Acrobat DC provides professional-grade PDF merging capabilities.
– It offers additional features for PDF editing, such as adding watermarks, bookmarks, and interactive elements.

Cons:
– Adobe Acrobat DC requires a subscription, which may not be cost-effective if you only need to merge PDF files occasionally.
– It is a resource-intensive application and may slow down older Mac computers.

Option 4. How to Merge PDF Files via PDFsam

PDFsam (PDF Split and Merge) is a free and open-source software that allows you to split, merge, and rotate PDF files. Here’s how you can use PDFsam to merge PDF files on your Mac:

1. Download and install PDFsam from the official website (www.pdfsam.org).
2. Launch PDFsam on your Mac.
3. Click on "Merge" in the toolbar.
4. Add the PDF files you want to merge by clicking on the "+" button.
5. Rearrange the order of the PDF files if needed.
6. Choose the output location and file name for the merged PDF file.
7. Click on "Run" to start the merging process.
8. Wait for PDFsam to merge the files and save the merged PDF file to your Mac.

Pros:
– PDFsam is a free and open-source solution without any limitations or watermarks.
– It provides a simple and intuitive interface for merging PDF files.

Cons:
– PDFsam may not support advanced PDF features like encryption or form field manipulation.
– It requires installation and may take up storage space on your Mac.

Why Can’t I Merge PDF Files via Preview?

Although Preview is a built-in application on Mac that offers basic PDF merging capabilities, it may not be sufficient for more complex merging needs. Here are three alternative solutions if you can’t use Preview:

1. Use a dedicated PDF merging software like Adobe Acrobat DC or PDFsam, which provide more advanced features and flexibility.
2. Convert the PDF files to another format, such as Word documents, and use a word processor to merge them. You can then convert the merged document back to PDF.
3. Print the PDF files and scan them as images, then use an image editing software to combine the scanned images into a single PDF file.

Implications and Recommendations

When merging PDF files on a Mac, it’s important to consider the implications and follow these recommendations:

1. Check the merged PDF file for any formatting or content issues before sharing or distributing it.
2. Make sure to keep backups of the original PDF files in case you need to make revisions or corrections later.
3. If the PDF files contain sensitive or confidential information, consider using a secure merging method or encrypting the merged PDF file.

The Bottom Line

Merging multiple PDF files into one on a Mac can be done using various methods, depending on your needs and preferences. Whether you choose to use built-in software like Preview, online platforms like Smallpdf, or dedicated PDF merging software like Adobe Acrobat DC or PDFsam, make sure to consider the pros and cons of each method before making a decision.

5 FAQs about Joining Multiple PDF Files into One on Mac

Q1: Can I merge password-protected PDF files?

A: Yes, depending on the method you choose. Adobe Acrobat DC and PDFsam support merging password-protected PDF files, but you will need to enter the password to access the files.

Q2: Will merging PDF files affect the resolution or quality of the documents?

A: It depends on the method you use. Preview and Smallpdf typically maintain the resolution and quality of the original PDF files. However, if you use software that compresses or converts the files during the merging process, there may be a slight impact on the resolution or quality.

Q3: Can I merge PDF files with different page sizes?

A: Yes, most PDF merging tools allow you to merge PDF files with different page sizes. The resulting merged document will maintain the original page sizes of each PDF file.

Q4: Is there a limit to the number of PDF files I can merge?

A: The limit depends on the method and software you use. Preview and Smallpdf may have limitations on the number or file size of the PDF files you can merge. Dedicated PDF merging software like Adobe Acrobat DC and PDFsam typically offer more flexibility and can handle larger numbers of files.

Q5: Are there any legal implications of merging PDF files?

A: Merging PDF files for personal use or within the scope of fair use is generally legal. However, if you plan to merge copyrighted documents or distribute the merged PDF files, make sure to comply with copyright laws and obtain the necessary permissions if needed.