Tutorial

How to change the default PDF viewer in Windows and Mac

By PDFjin Content Team Aug 12, 2026 6 min read
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How to change the default PDF viewer in Windows and Mac

Changing your default PDF viewer ensures that all PDF documents open with your preferred application, streamlining your workflow. This process involves associating the .pdf file type with a specific program through your operating system's settings.

Changing Default PDF Viewer in Windows

In Windows, you have primarily two methods to alter the default application for opening PDF files: via File Explorer's context menu or through the Windows Settings app.

Method 1 Right Click a PDF File

This is the quickest way to change the default viewer for a specific file type directly from your file system.

Method 2 Windows Settings Default Apps

This method provides a more centralized control over all default applications configured on your system.

Changing Default PDF Viewer on Mac

On macOS, adjusting the default application for a file type is typically done through the "Get Info" panel for a specific file, which then applies the change across all files of that type.

Method 1 Finder Get Info

This is the standard approach to modify file associations in macOS, ensuring all future PDFs open with your chosen application.

Summary of Steps

Refer to this table for a quick overview of the methods for changing your default PDF viewer.

Operating System Primary Method Steps
Windows File Explorer Right-Click Right-click PDF > Open with > Choose another app > Select app > Check "Always use this app" > OK
Windows Settings Default Apps Settings > Apps > Default apps > Choose default apps by file type > Find .pdf > Click current app > Select new app
Mac Finder Get Info Right-click PDF > Get Info > Open with > Select app > Click "Change All..." > Continue

By following these steps, you can reliably control which application handles your PDF documents, improving your document management workflow. Once your preferred viewer is set, you can efficiently manage your documents. If you find your PDF files are too large, consider how to compress the PDF file online for easier sharing or storage.

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