Announcing MuPDF WebViewer: A Modern PDF Viewer Built for the Web

We’re thrilled to introduce MuPDF WebViewer, the latest addition to the MuPDF family and a leap forward for viewing PDFs in modern web applications.

For years, the MuPDF engine has powered some of the world’s most reliable and efficient PDF solutions. Now, we’re bringing that same speed, accuracy, and flexibility directly to the browser—with no servers required and no compromises on performance.

Why We Built MuPDF WebViewer

Over the past decade, we’ve seen a dramatic shift in how people interact with digital documents. More workflows than ever are moving into the browser. But while web technology has advanced rapidly, truly lightweight and reliable PDF viewers have lagged behind—often requiring heavy dependencies, complicated build steps, or server-side rendering.

In the past, we’ve received inquiries from developers using the MuPDF SDK who have asked for an easy way to embed the same fast, reliable PDF viewing they trust into web applications. We’ve heard requests ranging from lightweight viewers for SaaS platforms to fully interactive PDF experiences for internal enterprise tools.

Many told us they loved MuPDF’s performance and rendering accuracy but wanted a turnkey web solution—something that didn’t require building a viewer from scratch or maintaining complex server-side infrastructure.

Developers needed a viewer that was:

• Fast enough to handle complex documents without frustrating delays
• Easy to embed without introducing bloat or complexity
• Advanced enough to support in-browser editing features like annotations, search, redaction, form filling and signing
• Free from usage tracking or hidden infrastructure costs

We can confidently say that MuPDF WebViewer delivers on all of these needs!

Built for Speed and Simplicity

At its core, MuPDF WebViewer offers client-side PDF rendering powered by the same MuPDF engine trusted by developers worldwide. The viewer loads quickly, scales beautifully across devices, and supports a rich set of PDF interactions, all without sending documents to external servers.

Developers can also directly access and modify the underlying PDF objects—add text and images, edit pages, and automate document creation or changes. Perfect for integrating into AI pipelines or workflow automation.

Who It’s For

Whether you’re building a SaaS platform, an internal enterprise tool, or a customer-facing web app, MuPDF WebViewer makes it easy to deliver a fast, intuitive PDF viewing experience to your users.

Try It Today

You can explore the MuPDF WebViewer right now:

👉 Launch the Demo

Or visit webviewer.mupdf.com to learn more and get started.