PDF reader for Expo

PDF reader in JavaScript only for Expo - Android capable.


Read a PDF just with JS (no native libs needed)


  • Display file only on full screen.
  • Embeded images binary are not display (yet) in Android

PRs are welcome...


import React from 'react';
import { StyleSheet, View } from 'react-native';
import PDFReader from 'rn-pdf-reader-js';
import { Constants } from 'expo';

export default class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
          source={{ uri: "http://gahp.net/wp-content/uploads/2017/09/sample.pdf" }}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    paddingTop: Constants.statusBarHeight,
    backgroundColor: '#ecf0f1',


  • source: Object
    • uri?: string - can be local or served on the web (ie. start withs https:// or file://)
    • base64?: string - should start with data
  • style: object - style props to override default container style


  • Use it into Expo app (from expo client, Standalone app or ExpoKit app).
  • Because we need to have access to Expo.FileSystem
  • Only React-Native 0.54+ support, Expo SDK 27


  • For Android, use react-pdf / pdfjs in the webview
  • For iOS devices, display file directly to the WebView

What rn-pdf-reader-js use?

  • react-pdf (pdf.js)
  • WebView
  • Expo FileSystem API
  • Base64