@peergrade/react-pdf

React-PDF

Display PDFs in your React app as easily as if they were images.

tl;dr

• Install by executing npm install react-pdf or yarn add react-pdf.
• Import by adding import { Document } from 'react-pdf'.
• Use by adding <Document file="..." />. file can be a URL, base64 content, Uint8Array, and more.
• Put <Page /> components inside <Document /> to render pages.

Demo

Minimal demo page is included in sample directory.

Online demo is also available!

Before you continue

React-PDF is under constant development. This documentation is written for React-PDF 4.x branch. If you want to see documentation for other versions of React-PDF, use dropdown on top of GitHub page to switch to an appropriate tag. Here are quick links to the newest docs from each branch:

• v3.x
• v2.x
• v1.x

Getting started

Compatibility

To use the latest version of React-PDF, your project needs to use React 16.3 or later.

If you use older version of React, please refer to the table below to find suitable React-PDF version. Don't worry - as long as you're running React 15.5 or later, you won't be missing out a lot!

React version	Newest compatible React-PDF version
≥16.3	4.x
≥15.5	3.x
≥0.13	0.0.10
≥0.11	0.0.4

Installation

Add React-PDF to your project by executing npm install react-pdf or yarn add react-pdf.

Usage

Here's an example of basic usage:

import React, { Component } from 'react';
import { Document, Page } from 'react-pdf';

class MyApp extends Component {
  state = {
    numPages: null,
    pageNumber: 1,
  }

  onDocumentLoad = ({ numPages }) => {
    this.setState({ numPages });
  }

  render() {
    const { pageNumber, numPages } = this.state;

    return (
      <div>
        <Document
          file="somefile.pdf"
          onLoadSuccess={this.onDocumentLoad}
        >
          <Page pageNumber={pageNumber} />
        </Document>
        <p>Page {pageNumber} of {numPages}</p>
      </div>
    );
  }
}

Check the sample directory of this repository for a full working example.

Enable PDF.js worker

It is crucial for performance to use PDF.js worker whenever possible. This ensures that your PDF file will be rendered in a separate thread without affecting page performance. To make things a little easier, we've prepared several entry points you can use.

Webpack

If you use Webpack, you're in luck. Instead of directly importing/requiring 'react-pdf', import it like so:

import { Document } from 'react-pdf/dist/entry.webpack';

…and you're all set!

Parcel

If you use Parcel, it's not a problem either. Instead of directly importing/requiring 'react-pdf', import it like so:

import { Document } from 'react-pdf/dist/entry.parcel';

…and you're done!

Browserify and others

If you use Browserify or other bundling tools, you will have to make sure on your own that pdf.worker.js file from pdfjs-dist/build is copied to your project's output folder.

Support for annotations

If you want to use annotations (e.g. links) in PDFs rendered by React-PDF, then you would need to include stylesheet necessary for annotations to be correctly displayed like so:

import 'react-pdf/dist/Page/AnnotationLayer.css';

Support for non-latin characters

If you want to ensure that PDFs with non-latin characters will render perfectly, or you have encountered the following warning:

Warning: The CMap "baseUrl" parameter must be specified, ensure that the "cMapUrl" and "cMapPacked" API parameters are provided.

then you would also need to include cMaps in your build and tell React-PDF where they are.

Copying cMaps

First, you need to copy cMaps from pdfjs-dist (React-PDF's dependency - it should be in your node_modules if you have React-PDF installed). cMaps are located in pdfjs-dist/cmaps.

Webpack

Add copy-webpack-plugin to your project if you haven't already:

npm install copy-webpack-plugin --save-dev

Now, in your Webpack config, import the plugin:

import CopyWebpackPlugin from 'copy-webpack-plugin';

and in plugins section of your config, add the following:

new CopyWebpackPlugin([
  {
    from: 'node_modules/pdfjs-dist/cmaps/',
    to: 'cmaps/'
  },
]),

Parcel, Browserify and others

If you use Parcel, Browserify or other bundling tools, you will have to make sure on your own that cMaps are copied to your project's output folder.

Setting up React-PDF

Now that you have cMaps in your build, pass required options to Document component by using options prop, like so:

<Document
  options={{
    cMapUrl: 'cmaps/',
    cMapPacked: true,
  }}
/>

User guide

Document

Loads a document passed using file prop.

Props

Prop name	Description	Example values
className	Defines custom class name(s), that will be added to rendered element along with the default react-pdf__Document.	String: "custom-class-name-1 custom-class-name-2" Array of strings: ["custom-class-name-1", "custom-class-name-2"]
error	Defines what the component should display in case of an error. Defaults to "Failed to load PDF file.".	String: "An error occurred!" React element: <div>An error occurred!</div> Function: this.renderError()
file	Defines what PDF should be displayed. Its value can be an URL, a file (imported using import ... from ... or from file input form element), or an object with parameters (url - URL; data - data, preferably Uint8Array; range - PDFDataRangeTransport; httpHeaders - custom request headers, e.g. for authorization), withCredentials - a boolean to indicate whether or not to include cookies in the request (defaults to false).	URL: "http://example.com/sample.pdf" File: import sample from '../static/sample.pdf' and then sample Parameter object: { url: 'http://example.com/sample.pdf', httpHeaders: { 'X-CustomHeader': '40359820958024350238508234' }, withCredentials: true }
inputRef	A function that behaves like ref, but it's passed to main <div> rendered by <Document> component.	(ref) => { this.myDocument = ref; }
loading	Defines what the component should display while loading. Defaults to "Loading PDF…".	String: "Please wait!" React element: <div>Please wait!</div> Function: this.renderLoader()
noData	Defines what the component should display in case of no data. Defaults to "No PDF file specified.".	String: "Please select a file." React element: <div>Please select a file.</div> Function: this.renderNoData()
onItemClick	Function called when an item has been clicked. Usually, you would like to use this callback to move the user wherever they requested to.	({ pageNumber }) => alert('Clicked an item from page ' + pageNumber + '!')
onLoadError	Function called in case of an error while loading a document.	(error) => alert('Error while loading document! ' + error.message)
onLoadSuccess	Function called when the document is successfully loaded.	(pdf) => alert('Loaded a file with ' + pdf.numPages + ' pages!')
onSourceError	Function called in case of an error while retrieving document source from file prop.	(error) => alert('Error while retreiving document source! ' + error.message)
onSourceSuccess	Function called when document source is successfully retreived from file prop.	() => alert('Document source retreived!')
options	An object in which additional parameters to be passed to PDF.js can be defined. For a full list of possible parameters, check PDF.js documentation on DocumentInitParameters.	{ cMapUrl: 'cmaps/', cMapPacked: true }
rotate	Defines the rotation of the document in degrees. If provided, will change rotation globally, even for the pages which were given rotate prop of their own. 90 = rotated to the right, 180 = upside down, 270 = rotated to the left.	90

Page

Displays a page. Must be placed inside <Document /> or have pdf prop passed, which can be obtained from <Document />'s onLoadSuccess callback function.

Note: <Page/> must be a direct child of <Document /> component. <Document /> passes necessary props only to its direct children. If you wish to put a component in between of <Document /> and <Page/>, you must ensure to pass all the props to <Page/> component by yourself.

Props

Prop name	Description	Example values
className	Defines custom class name(s), that will be added to rendered element along with the default react-pdf__Page.	String: "custom-class-name-1 custom-class-name-2" Array of strings: ["custom-class-name-1", "custom-class-name-2"]
customTextRenderer	A function that customizes how a text layer is rendered. Passes itext item and index for item.	({ str, itemIndex }) => { return (<mark>{str}</mark>) }
error	Defines what the component should display in case of an error. Defaults to "Failed to load the page.".	String: "An error occurred!" React element: <div>An error occurred!</div> Function: this.renderError()
inputRef	A function that behaves like ref, but it's passed to main <div> rendered by <Page> component.	(ref) => { this.myPage = ref; }
loading	Defines what the component should display while loading. Defaults to "Loading page…".	String: "Please wait!" React element: <div>Please wait!</div> Function: this.renderLoader()
noData	Defines what the component should display in case of no data. Defaults to "No page specified.".	String: "Please select a page." React element: <div>Please select a page.</div> Function: this.renderNoData()
onLoadError	Function called in case of an error while loading the page.	(error) => alert('Error while loading page! ' + error.message)
onLoadSuccess	Function called when the page is successfully loaded.	(page) => alert('Now displaying a page number ' + page.pageNumber + '!')
onRenderError	Function called in case of an error while rendering the page.	(error) => alert('Error while loading page! ' + error.message)
onRenderSuccess	Function called when the page is successfully rendered on the screen.	() => alert('Rendered the page!')
onGetAnnotationsSuccess	Function called when annotations are successfully loaded.	(annotations) => alert('Now displaying ' + annotations.length + ' annotations!')
onGetAnnotationsError	Function called in case of an error while loading annotations.	(error) => alert('Error while loading annotations! ' + error.message)
onGetTextSuccess	Function called when text layer items are successfully loaded.	(items) => alert('Now displaying ' + items.length + ' text layer items!')
onGetTextError	Function called in case of an error while loading text layer items.	(error) => alert('Error while loading text layer items! ' + error.message)
pageIndex	Defines which page from PDF file should be displayed. Defaults to 0.	0
pageNumber	Defines which page from PDF file should be displayed. If provided, pageIndex prop will be ignored. Defaults to 1.	1
renderAnnotations	Defines whether annotations (e.g. links) should be rendered. Defaults to true.	false
renderInteractiveForms	Defines whether interactive forms should be rendered. Defaults to false.	true
renderTextLayer	Defines whether a text layer should be rendered. Defaults to true.	false
rotate	Defines the rotation of the page in degrees. 90 = rotated to the right, 180 = upside down, 270 = rotated to the left. Defaults to page's default setting, usually 0.	90
scale	Defines the scale in which PDF file should be rendered. Defaults to 1.0.	0.5
width	Defines the width of the page. If not defined, canvas will be rendered at the width defined in PDF. If you define width and scale at the same time, the width will be multiplied by a given factor.	300

Outline

Displays an outline (table of contents). Must be placed inside <Document /> or have pdf prop passed, which can be obtained from <Document />'s onLoadSuccess callback function.

Props

Prop name	Description	Example values
className	Defines custom class name(s), that will be added to rendered element along with the default react-pdf__Outline.	String: "custom-class-name-1 custom-class-name-2" Array of strings: ["custom-class-name-1", "custom-class-name-2"]
onItemClick	Function called when an item has been clicked. Usually, you would like to use this callback to move the user wherever they requested to.	({ pageNumber }) => alert('Clicked an item from page ' + pageNumber + '!')
onLoadError	Function called in case of an error while retreiving the outline.	(error) => alert('Error while retreiving the outline! ' + error.message)
onLoadSuccess	Function called when the outline is successfully retreived.	() => alert('The outline has been successfully retreived.')
onParseError	Function called in case of an error while parsing the outline.	(error) => alert('Error while parsing the outline! ' + error.message)
onParseSuccess	Function called when the outline is successfully parsed.	({ outline }) => alert('There are ' + outline.length + ' top level items in the table of contents.')

License

The MIT License.

Author

Wojciech Maj [e-mail] http://wojtekmaj.pl

Thank you

This project wouldn't be possible without awesome work of Niklas Närhinen [e-mail] who created its initial version and without Mozilla, author of pdf.js. Thank you!