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179 Stars 184 Forks Other 2.6K Commits 10 Opened issues


WebViewer UI built in React

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WebViewer UI - v8.1

WebViewer UI sits on top of WebViewer, a powerful JavaScript-based PDF Library that's part of the PDFTron PDF SDK. Built in React, WebViewer UI provides a slick out-of-the-box responsive UI that interacts with the core library to view, annotate and manipulate PDFs that can be embedded into any web project.

WebViewer UI

This repo is specifically designed for any users interested in advanced customizations. With the source code access, it gives developers full control to customize & style the UI, build custom controls & logic, integrate into workflows, or build a UI from scratch.


npm install
npm run download-webviewer


npm start


npm run build

Project structure

  apis/            - APIs exposed in myWebViewer.getInstance()
  components/      - React components
  constants/       - JavaScript or CSS constants
  core/            - APIs from the Core
  event-listeners/ - Listeners for the Core events
  helpers/         - Reused functions
  redux/           - Redux files for state managing
  lib/             - Lib folder created upon npm install, used for dev testing only

API documentation

See API documentation.


See contributing.


See license.

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