Sumatra PDF
A PDF, eBook, and comic reader for Windows.
Sumatra PDF is a free, open-source document reader for Windows that opens files quickly with minimal memory use. It supports PDF, EPUB, MOBI, comic book archives (CBZ/CBR), DjVu, XPS, CHM, and common image formats, and runs on Windows 7, 8, 10, and 11 in 32-bit, 64-bit, and ARM64 builds.
The application offers customizable keyboard shortcuts, themes, and toolbar layout. It is available as an installed program or as a portable version that runs without installation, for example from a USB drive. The software is free and open source, with no ads, bundled software, or subscription. It is a Windows-only application.
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