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WebViewer – JavaScript PDF Library

Works on all browsers and mobile devices without using plug-ins.
Supports PDF, MS Office, and 30+ formats.


  • View, annotate, and collaborate in real-time
  • Watermark, stamp, form fill, sign, search, and more
  • Client-side PDF editing (without a server)
  • Document security, DRM, encryption, redaction
  • Overprint, ICC color management, color separation
  • PDF, MS Office, and 30+ formats

Fully Customizable

  • Customize & style the UI, or build your own
  • Create custom controls and logic
  • Integrate into your workflows
  • Robust API

Integrate Quickly Into Your Project

PDFTron is easy to get up and running with popular package managers and a few lines of code.

View a Document

Customize the UI

Create an Annotation

Add a stamp

Fill forms

<!-- when ready, replace all references to below with your own server -->
 <script src=''> </script>

 <div id='viewer' style='width: 1024px; height: 600px;'> </div>
  const viewerElement = document.getElementById('viewer');
    path: '',
    initialDoc: '', // replace with your own PDF file
  }, viewerElement).then((instance) => {
    // call apis here
Testimonial profile
PDFTron provided us with an out-of-the-box solution that was easy to configure, while still being highly customizable. That meant quick and easy implementation, plus the ability to adjust to our end users’ wants, and scale as needed. Accuracy and performance of the software was equally critical, as it would be used within a live environment. PDFTron proved to have both. In addition, their technical support was highly responsive and helpful, which was also a big plus.
Olaf Rathgeb
CTO, Fr. Meyer’s Sohn (GmbH & Co.) KG

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