General Info – How to Merge PDFs on Mac

Two PDF documents open on a Mac
Khamosh Pathak

There are times when life doesn’t hand you a complete PDF. If you’re left with multiple pages or a PDF document in multiple parts, you’ll want to merge it into a single file on your Mac before sending it out. Here’s how to do that using built-in tools and online.

How to Merge PDFs Using Preview

Preview is one of the hidden gems of macOS. Not only is it great for editing images and signing documents, but you can also perform simple PDF operations without paying for a dedicated PDF editing app.

RELATED: Use Your Mac’s Preview App to Merge, Split, Mark Up, and Sign PDFs

Using the Preview app, you can easily combine multiple PDF documents. You can also add in a couple of pages from a different PDF document. Here’s how it works.

Open your given PDF file in the Preview app. Next, make sure you can view the Thumbnails bar on the left side of the window. If you can’t see it, click on the “Sidebar” button and click on the “Thumbnails” option.

Click on the sidebar button and select Thumbnails

You’ll now be able to see a list of all pages in the document.

Now, go to the menu bar and select the “Edit” option. Here, go to the “Insert” option and then click on the “Page from File” button.

Click on the button to insert a new PDF in the document

The Preview app will now ask you to choose a PDF. Navigate to the folder where you’ve saved the second PDF file. Once you’ve selected the file, click on the “Open” button.

Select the second PDF and then click on Open

You’ll now see that all the pages from the second PDF are added to the end of the current PDF. To confirm, scroll down in the Thumbnails section to look at the total page count.

Check to see the number of the last page in the document

Preview also lets you add individual pages from another PDF file into your original document. To do this, open two PDF files in two different Preview windows and keep them side by side.

Now, click and drag the page from the second PDF into the original document. Go to the Thumbnails section and once you’ve got the correct location, release the click to drop the page in the original document. You can repeat this process to add more PDF pages from multiple documents.

Drag in a page from another PDF

Now that the PDFs are merged, it’s time to save them as a new PDF file.

Go to the “File” section in the menu bar and click on the “Export as PDF” button.

Click on the File button and then select Export as PDF

Finally, give the PDF file a new name, and once you’ve selected the destination, click on the “Save” button.

Click on Save to export the merged PDF as a new document

The merged PDF will now be saved to the destination folder.

How to Merge PDFs Using Smallpdf

If you don’t want to use the Preview app, you can use a website to merge PDFs. As an added benefit, this will work on any computer, including Windows and a Chromebook.

We’ll be using Smallpdf to get this done. Open the Smallpdf Merge PDF tool in your browser to get started. Here, you can select and drag in PDF files or click on the “Choose File” button to select PDF files from local storage.

Click on Choose file button on Smallpdf

After selecting the files, click on the “Choose” button.

Click on the Choose button to upload PDFs to smallpdf

The PDF files will now be uploaded to the website. Smallpdf has two modes for merging PDFs. In the standard File mode, you’ll see preview icons for each PDF. You can reorder the PDFs and then click on the “Merge PDF!” button to merge them.

Click on Merge PDF from File mode

Once you switch to the “Page Mode,” you’ll see all the pages from all the PDFs listed here. You can then drag pages around to reorder them. You can also click on the “Delete” button to remove a particular page from the PDF.

Delete or rotate a page from the options panel

Once you’re satisfied with the page order, click on the “Merge PDF!” button.

Reorder the PDF pages and then click on the Merge PDF button

On the next page, click on the “Download” button. You’ll find the merged PDF in your downloads folder.

You can also use the Preview app to merge multiple images into a single PDF document.

RELATED: How to Combine Images into One PDF File on a Mac

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