SumatraPDF

Free, lightweight multi-format document reader for Windows supporting PDF, EPUB, MOBI, CBZ and more.

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SumatraPDF is a free, open-source, lightweight document and ebook reader for Windows that opens PDFs, EPUB, MOBI, CBZ, CBR and other formats. It provides a fast, low‑resource viewing experience for students, researchers and general ebook readers who want a simple reader rather than a feature-heavy editor; it is not intended for PDF editing or signing.

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