Merging PDF files can be achieved on a Mac in three ways: 1. Use the Preview app to drag and merge manually, suitable for a small number of pages; 2. Use the Automatic Action to create a fast batch merge, suitable for a large number of files; 3. Use Adobe Acrobat Pro, PDFelement, or online tools to achieve advanced features. The first two are the system-owned solutions, and the basic merger requirements can be completed without additional software installation.

Merging PDF files is actually quite simple on Mac, especially the "preview" application that comes with the system can handle it. No additional software downloads are required, multiple PDFs can be merged into one file in a few steps, especially suitable for students and office workers to process documents such as reports, resumes or contracts.

Merge PDFs with "Preview" (most basic and most commonly used)

The "Preview" app for Mac is not just a tool for viewing pictures and PDFs, it also has a built-in merge function. The operation is also very intuitive:

• Open "Preview" and drag in the first PDF file you want to merge
• In the side thumbnail bar, hold down the left mouse button to drag other PDF pages in and place them where you want to insert them
• After dragging, click "File" > "Export as PDF"

This method is suitable for situations where there are not many pages, such as merging small files with three or five pages. But if you want to merge many complete PDF documents, it may be a bit slow to drag one by one manually.

Batch merge PDFs using "automatic action"

If you have multiple complete PDF files to merge into one, you can use "automatic operations" and "fast operations" to complete it in one click:

1. Turn on "Automator"
2. Create a new "Quick Action"
3. Select "Operation Receive 'PDF File' as input"
4. Add action: "Merge PDF files"
5. You can check whether to sort or set the output position
6. Finally save this quick operation

After that, you only need to right-click multiple PDF files, select "Service" or the quick operation you saved to automatically synthesize a new file. This is very convenient for processing large amounts of documents such as invoices, scanned copies, course materials, etc.

Use online tools or third-party apps (suitable for advanced needs)

Although the Mac comes with its own methods are enough, sometimes you may need more features, such as encryption, splitting, compression, tuning order, etc. At this time, you can consider some commonly used PDF tools:

• Adobe Acrobat Pro : Professional-level editor for those who often process PDFs
• PDFelement or Wondershare PDF : comprehensive and lighter than Adobe
• Online tools such as Smallpdf, iLovePDF : suitable for temporary use, but pay attention to privacy issues

Most of these tools support drag and drop operations, and the interface is also quite friendly, suitable for users who are not familiar with the native functions of the system.

Basically these are the methods. The features that come with Mac can meet most daily usage scenarios, and third-party tools are only needed when more complex editing is needed. It is not difficult to operate, but what is easy to ignore is the "automatic operation" method. Many people don't know that it can batch process files so easily.

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