Want a PDF reader that opens instantly and stays out of the way? Sumatra PDF is a lightweight Windows reader for PDFs, ebooks, comics, and other document formats.
Open books, comics, and documents
Sumatra PDF handles PDF documents alongside EPUB and MOBI ebooks. Comic book archives (CBZ/CBR), DjVu scans, XPS and CHM help files and ordinary images open in it too. Open a file to read it in the same uncluttered interface, whether it is a scanned document, an ebook, or a comic.
Adjust the reading controls
The interface keeps attention on the document instead of filling the window with editing panels. Readers can customize keyboard shortcuts, choose a theme, and change the toolbar layout to suit their reading habits.
- Set preferred shortcuts for common actions.
- Choose a theme and arrange the toolbar.
Carry Sumatra PDF on a USB drive
There is also a portable version that runs straight from a USB stick. Keep the reader alongside documents on removable storage and open supported files directly from there.
Use one reader for mixed file collections
Sumatra PDF's format range suits folders containing manuals, notes, ebooks, and comic files. Its low memory use and quick startup also fit short tasks such as opening a reference document and returning to work.
Pros
- Reads PDF, EPUB, MOBI, comic, DjVu, XPS, CHM, and image files
- Portable option runs from a USB drive without installation
- Keyboard shortcuts, themes, and toolbar layout are customizable
- Quick startup with low memory use
System requirements: Windows 7, Windows 8, Windows 10, Windows 11 · 32-bit and 64-bit
Which file formats can Sumatra PDF open?
PDFs, EPUB and MOBI ebooks, CBZ and CBR comics, DjVu, XPS, CHM and image files.
Can Sumatra PDF run from a USB drive?
Yes. The portable edition needs no installation.
Can I customize the reading interface?
Yes. You can change shortcuts, pick a theme and rearrange the toolbar.
