sumatrapdfreader/sumatrapdf
SumatraPDF reader observed · 2026-10-18
Health v2 · maintenance only
90/100
- Activity 100
- Release rhythm 71
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 19
- age_days: 5131
- days_rel: 197
- days_push: 3
- n_releases_24m: 2
Adoption not part of the score
17786 stars · 2062 forks observed · 2026-10-18
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
SumatraPDF is a free, open-source, lightweight multi-format document reader for Windows supporting PDF, EPUB, MOBI, CBZ/CBR, DjVu, XPS, CHM, and many image formats. It also ships command-line tools for converting, merging, extracting, and encrypting PDFs, and is highly customizable via themes, keyboard shortcuts, and toolbar layouts.
Use cases
- read pdfs on windows without bloated adobe reader
- open epub and mobi ebooks
- view comic book cbz cbr files
- portable pdf viewer from a usb drive
- merge or split pdf pages from the command line
- extract text and images from a pdf
- customize a dark theme for a document reader
- annotate and highlight pdf documents
When to choose
- you need a fast, minimal PDF/eBook reader on Windows
- you want a portable app with no installation
- you need scripting/CLI tools for PDF manipulation
- you value customization like themes, shortcuts, and toolbars
When to avoid
- you need Linux, macOS, or Android support - it is Windows-only
- you need advanced PDF editing or form-filling features of full PDF suites
- you need DRM-protected ebook support
Facets
application · maturity active
pdf-viewer gui cli ocr pdf files desktop-applications developer-tools windows cli pdf-reader ebook-reader comic-reader djvu epub portable lightweight document-viewer pdf-tools desktop
9 sources
- readme: https://github.com/sumatrapdfreader/sumatrapdf · fetched 2026-10-18 · a2d39e3fb927
- homepage: http://www.sumatrapdfreader.org · fetched 2026-10-12 · c53a1bffca07
- site_page: https://www.sumatrapdfreader.org/docs/SumatraPDF-documentation · fetched 2026-10-12 · d680f5d78d04
- site_page: https://www.sumatrapdfreader.org/docs/Customizing-keyboard-shortcuts · fetched 2026-10-12 · 44136fa355b3
- site_page: https://www.sumatrapdfreader.org/docs/Customize-theme-colors · fetched 2026-10-12 · cd4bd7ef233e
- site_page: https://www.sumatrapdfreader.org/docs/Customize-toolbar · fetched 2026-10-12 · 446c697620a1
- site_page: https://www.sumatrapdfreader.org/docs/Supported-document-formats · fetched 2026-10-12 · 949d633ac2ad
- site_page: https://www.sumatrapdfreader.org/docs/Why-only-Windows · fetched 2026-10-12 · 34e3ecad09cb
- site_page: https://www.sumatrapdfreader.org/docs/Version-history · fetched 2026-08-29 · 3472e223bf88
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| sumatrapdfreader/sumatrapdf | main | 90 |
For agents
markdown · JSON · MCP: product_card(name="sumatrapdfreader/sumatrapdf")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem