Ultra small, ultra fast PDF rendering software

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Trusted and used by Fortune 500 leaders, independent developers and startups worldwide.

MuPDF Software

MuPDF is a lightning fast, extremely small, high-quality PDF renderer. Highly versatile and customizable, MuPDF can be used across a wide range of applications as a PDF renderer, viewer or toolkit. Our small size is perfect for mobile, browser, e-book and other applications where a small footprint is key.

The MuPDF toolkit code is clean and designed to facilitate ease of access and immediate productivity for developers. Its many deployments include serving as the PDF engine inside mobile apps, driving internal/external document workflow, embedding in printers and multi-function printers (MFPs), in support of cloud solutions, and more.

Contact us to learn more about which components and features may best suit your product/solution needs.

Small, fast and comprehensive

Rocket fast renderer

There is no faster PDF renderer than MuPDF. Benchmark tests demonstrate our speed. Learn more.

Small footprint

MuPDF will never bloat your solution. Our library can be built in different configurations, depending on your needs. A minimal configuration including the base 14 fonts needed for PDF weighs in at a mere 2MB. Adding basic CJK fonts (without Unicode scripts) brings it to 5MB. A full configuration build (includes all the fonts and tables required to reliably support Unicode scripts and CJK languages on all systems) is 35MB; if you don’t need full language specific CJK fonts, you can reduce this to 25 MB.

Broad format coverage

MuPDF covers the widest range of document formats of major players in our category, maximizing value and versatility for you as a developer.

Outstanding rendering features and benefits

  • Sub-pixel fidelity rendering – MuPDF’s high-quality anti-aliased graphics renders text with metrics and spacing accurate to within fractions of a pixel, delivering the highest possible fidelity for reproducing the look of a printed page on a screen.
  • Text Reflow – No side scrolling! MuPDF mobile apps support PDF to reflowable HTML. This mode for viewing PDF documents enables lines of text to automatically fit your mobile device screen width, resulting in a better end-user viewing experience.
  • Progressive rendering – MuPDF has various extensions to its mechanisms for handling progressive loading. With a little coding, this enables users to view individual PDF pages in documents as they appear while other pages load in the background. The benefit – a user can view large documents more quickly.

Get Productive with our wide range of interactive PDF features

A wide range of interactive features and functionality supported on all platforms, including:

  • Annotations – Over 20 different annotations, including highlights, free-hand drawing, comments, insert images and sound, stamps, hyperlinks, text search and more. See our complete list of annotation features.
  • Form Filling – Enables mobile users to easily fill out and submit forms.
  • Page Manipulation – Reorder, rotate, add or delete PDF pages.

See our complete list of interactive PDF features.


MuPDF may be adapted and used in a wide variety of embedded, host-based, mobile or cloud applications. Its use is only dependent on your creativity. Some common uses include:

  • PDF engine inside a mobile app
  • Embedded in printers and MFPs
  • Internal and external document workflow
  • Rendering engine and other support for cloud solutions and more

Contact us to learn more about which components and features may best suit your product/solution needs.

Full range of operating systems support – MuPDF runs on a wide range of operating systems, including Android, iOS, Microsoft Windows, Linux, and macOS.

Quality Assured

We are developers at heart, constantly seeking to improve and enhance our products. This assures our customers always have the best solutions available for your use.

Our ongoing improvement of MuPDF includes rigorous, continuous benchmark testing, daily regression testing of code and QualityLogic conformance testing. This ensures you receive the highest quality performance.

As a company, we are also committed and dedicated to the support and service of our customers. This is yet another reason why over one hundred OEM partners worldwide rely on Artifex technologies.

Ready to Get Started?

MuPDF is a lightweight, lightning fast PDF and XPS interpreter that also offers interactive PDF features.


Developer Portal

We'll give you access to the documents and development tools you'll need to make your ideas a reality.

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MuPDF is available under the Open Source AGPL and commercial license arrangements

Open Source

If your distribution terms conform to our open source license, download here.

Commercial License

If you would like to secure a commercial license for distribution, learn more here.

Need Help Choosing?

Uncertain as to which license fits your situation?