One Line to Integrate. Works Anywhere

Pure JavaScript
Works with React, Vue, Next.js, Angular, and more
Full TypeScript support
NPM-ready

npm install mupdf-webviewerCopy

initMuPDFWebViewer('#viewer', 'sample.pdf', {
  libraryPath: 'YOUR_LIBRARY_PATH',
  licenseKey: 'YOUR_LICENSE_KEY',
})

initMuPDFWebViewer('#viewer', 'sample.pdf', {
  libraryPath: 'YOUR_LIBRARY_PATH',
  licenseKey: 'YOUR_LICENSE_KEY',
})

Try the Demo, Embed in Minutes, Build with Confidence

Try the live demo and see MuPDF Viewer in action. Easily embed it into your app in minutes and create a seamless PDF experience with full customization.

Try Demo Get Started

Try the Demo, Embed in Minutes, Build with Confidence

Try the live demo and see MuPDF Viewer in action. Easily embed it into your app in minutes and create a seamless PDF experience with full customization.

Try Demo Get Started

WHY MUPDF VIEWER

Powerful On the Inside, Simple On the Outside

Try Demo Get Started

Ultra-Lightweight, Dependency-Free

Built from C and compiled into WebAssembly (WASM), MuPDF WebViewer loads fast and runs lean. No external JavaScript libraries, no UI frameworks. Works even in air-gapped environments—perfect for security-conscious organizations.

Full In-Browser Editing

Edit PDFs directly in the browser: highlight, annotate, fill out forms, sign, and redact content permanently using applyRedaction(). All data stays on the client—zero server roundtrips or backend dependencies.

Drop-In Integration

Add a complete viewer with just one JS function. Skip the build steps, bundlers, and framework lock-in. A truly plug-and-play solution that fits into any frontend stack.

Direct PDF Object Access

Go beyond UI controls—access low-level PDF elements. Insert text and images, manipulate pages, and programmatically generate or transform documents. Ideal for LLM pipelines or workflow automation.

Local Save Support

Save edited PDFs as Blob or ArrayBuffer. Easily integrate with CRMs, ERPs, cloud drives, or native download dialogs. Users keep full control of their documents.

Flat, Transparent Licensing

Simple pricing includes full functionality, white labeling, and unlimited usage. No per-user fees, no API throttling, no usage tracking.

Built on MuPDF, the document reader trusted by Samsung Securities, the Korean Supreme Court, and thousands of developers. Backed by decades of production-grade PDF experience.

Developer-First Experience

NPM-installable, TypeScript-native, fully documented. Works with modern frameworks but never requires them. No vendor lock-in, no hidden binaries—just clean, auditable code.