Opening EPUB files on your Windows PC can be straightforward if you have the right tools. In this guide, I’ll show you step-by-step how to open EPUB files on both Windows 10 and 11 using a free program called Sumatra PDF. This method is quick, easy, and works for various file types.
Key Takeaways
- Sumatra PDF is a free and lightweight program to open EPUB files on Windows.
- You can download Sumatra PDF in 64-bit or 32-bit, and choose between an installer or portable version.
- Once set up, Sumatra PDF will be your default program for EPUB files.
Why Use Sumatra PDF?
Sumatra PDF is a versatile and free program that supports not only EPUB files but also other formats like Mobi. This makes it an excellent choice for anyone looking for a lightweight and easy-to-use reader on Windows.
Step 1: Download Sumatra PDF
To get started, you need to download Sumatra PDF. Follow these steps:
- Visit the official Sumatra PDF website.
- Click on the “Download” tab.
- Choose between 64-bit and 32-bit versions depending on your system.
- Decide if you want the installer or the portable version. In this tutorial, we’ll use the 64-bit installer.

Step 2: Install Sumatra PDF
Once the download is complete, you’ll need to install the program:
- Open the downloaded file.
- Click on “Install Sumatra PDF.”
- The installation process is quick because Sumatra PDF is a small program.
After installation, close out of the installer.

Step 3: Open an EPUB File
Now that Sumatra PDF is installed, you can open an EPUB file:
- If you already have an EPUB file, double-click it. It should automatically open in Sumatra PDF.
- If it doesn’t open automatically, follow these steps:
- Right-click the EPUB file and select “Properties.”
- In the “Opens with” section, click on “Change.”
- Choose Sumatra PDF from the list of programs.
- Click “OK,” then “Apply,” and finally “OK” again.
All your EPUB files will now open with Sumatra PDF by default.

Step 4: Download a Sample EPUB File
If you don’t have an EPUB file to test with, you can download one:
- Visit epubbooks.com.
- Download the “Pick of the Day” as an EPUB file.
- Once downloaded, open the file with Sumatra PDF by clicking on it.

Conclusion
Opening EPUB files on Windows 10 and 11 doesn’t have to be complicated. With Sumatra PDF, you have a free, simple, and effective tool to handle your eBooks and more. Follow the steps above, and you’ll be reading your EPUB files in no time.
FAQs
What is an EPUB file?
An EPUB file is a popular eBook format that can be read on various devices, including computers, smartphones, and eReaders.
Is Sumatra PDF safe to use?
Yes, Sumatra PDF is a well-known and trusted program that is safe to download and use.
Can Sumatra PDF open other file types?
Yes, Sumatra PDF can open multiple file types, including PDFs, Mobi files, and more.
Do I need to pay for Sumatra PDF?
No, Sumatra PDF is completely free to use.
How do I change the default program for EPUB files?
Right-click on the EPUB file, go to “Properties,” and in the “Opens with” section, click “Change” and select Sumatra PDF.