@dgautalius/React-PDF

Display PDFs in your React app as easily as if they were images. Forked from wojtekmaj/react-pdf

tl;dr

• Install by executing npm install @dgautalius/react-pdf or yarn add @dgautalius/react-pdf.
• Import by adding import { Document } from '@dgautalius/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.

Getting started

Compatibility

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

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

function MyApp() {
  const [numPages, setNumPages] = useState(null);
  const [pageNumber, setPageNumber] = useState(1);

  function onDocumentLoadSuccess({ numPages }) {
    setNumPages(numPages);
  }

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

Check the sample directory in this repository for a full working example. For more examples and more advanced use cases, check Recipes in React-PDF Wiki.

Enable PDF.js worker

It is crucial for performance to use PDF.js worker whenever possible. This ensures that PDF files 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

Instead of directly importing/requiring 'react-pdf', import it like so:

// using ES6 modules
import { Document } from 'react-pdf/dist/esm/entry.webpack';

// using CommonJS modules
import { Document } from 'react-pdf/dist/umd/entry.webpack';

Parcel

Instead of directly importing/requiring 'react-pdf', import it like so:

// using ES6 modules
import { Document } from 'react-pdf/dist/esm/entry.parcel';

// using CommonJS modules
import { Document } from 'react-pdf/dist/umd/entry.parcel';

Create React App

Create React App uses Webpack under the hood, but instructions for Webpack will not work. Standard instructions apply.

Standard (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.

Alternatively, you could use pdf.worker.js from an external CDN:

import { pdfjs } from 'react-pdf';
pdfjs.GlobalWorkerOptions.workerSrc = `//cdnjs.cloudflare.com/ajax/libs/pdf.js/${pdfjs.version}/pdf.worker.js`;

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:

// using ES6 modules
import 'react-pdf/dist/esm/Page/AnnotationLayer.css';

// using CommonJS modules
import 'react-pdf/dist/umd/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,
  }}
/>

Alternatively, you could use cMaps from external CDN:

import { pdfjs } from 'react-pdf';

<Document
  options={{
    cMapUrl: `//cdn.jsdelivr.net/npm/pdfjs-dist@${pdfjs.version}/cmaps/`,
    cMapPacked: true,
  }}
/>

User guide

Document

Loads a document passed using file prop.

Props

|Prop name|Description|Default value|Example values| |----|----|----|----| |className|Class name(s) that will be added to rendered element along with the default react-pdf__Document.|n/a|String:"custom-class-name-1 custom-class-name-2"Array of strings:["custom-class-name-1", "custom-class-name-2"]| |error|What the component should display in case of an error.|"Failed to load PDF file."|String:"An error occurred!"React element:<div>An error occurred!</div>Function:this.renderError| |externalLinkTarget|Link target for external links rendered in annotations.|unset, which means that default behavior will be used|One of valid values for target attribute."_self""_blank""_parent""_top" |file|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).Warning: Since equality check (===) is used to determine if file object has changed, it must be memoized by setting it in component's state, useMemo or other similar technique.|n/a|URL:"http://example.com/sample.pdf"File:import sample from '../static/sample.pdf' and thensampleParameter 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.|n/a|(ref) => { this.myDocument = ref; }| |loading|What the component should display while loading.|"Loading PDF…"|String:"Please wait!"React element:<div>Please wait!</div>Function:this.renderLoader| |noData|What the component should display in case of no data.|"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 outline item has been clicked. Usually, you would like to use this callback to move the user wherever they requested to.|n/a|({ pageNumber }) => alert('Clicked an item from page ' + pageNumber + '!')| |onLoadError|Function called in case of an error while loading a document.|n/a|(error) => alert('Error while loading document! ' + error.message)| |onLoadSuccess|Function called when the document is successfully loaded.|n/a|(pdf) => alert('Loaded a file with ' + pdf.numPages + ' pages!')| |onPassword|Function called when a password-protected PDF is loaded.|A function that prompts the user for password|(callback) => callback('s3cr3t_p4ssw0rd')| |onSourceError|Function called in case of an error while retrieving document source from file prop.|n/a|(error) => alert('Error while retrieving document source! ' + error.message)| |onSourceSuccess|Function called when document source is successfully retrieved from file prop.|n/a|() => alert('Document source retrieved!')| |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.|n/a|{ cMapUrl: 'cmaps/', cMapPacked: true }| |renderMode|Rendering mode of the document. Can be "canvas", "svg" or "none".|"canvas"|"svg"| |rotate|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.|n/a|90|

Page

Displays a page. Should be placed inside <Document />. Alternatively, it can have pdf prop passed, which can be obtained from <Document />'s onLoadSuccess callback function, however some advanced functions like linking between pages inside a document may not be working correctly.

Props

|Prop name|Description|Default value|Example values| |----|----|----|----| |className|Class name(s) that will be added to rendered element along with the default react-pdf__Page.|n/a|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.|n/a|({ str, itemIndex }) => { return (<mark>{str}</mark>) }| |error|What the component should display in case of an error.|"Failed to load the page."|String:"An error occurred!"React element:<div>An error occurred!</div>Function:this.renderError| |height|Page height. If neither height nor width are defined, page will be rendered at the size defined in PDF. If you define width and height at the same time, height will be ignored. If you define height and scale at the same time, the height will be multiplied by a given factor.|Page's default height|300| |inputRef|A function that behaves like ref, but it's passed to main <div> rendered by <Page> component.|n/a|(ref) => { this.myPage = ref; }| |loading|What the component should display while loading.|"Loading page…"|String:"Please wait!"React element:<div>Please wait!</div>Function:this.renderLoader| |noData|What the component should display in case of no data.|"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.|n/a|(error) => alert('Error while loading page! ' + error.message)| |onLoadProgress|Function called, potentially multiple times, as the loading progresses.|n/a|({ loaded, total }) => alert('Loading a document: ' + (loaded / total) * 100 + '%');| |onLoadSuccess|Function called when the page is successfully loaded.|n/a|(page) => alert('Now displaying a page number ' + page.pageNumber + '!')| |onRenderError|Function called in case of an error while rendering the page.|n/a|(error) => alert('Error while loading page! ' + error.message)| |onRenderSuccess|Function called when the page is successfully rendered on the screen.|n/a|() => alert('Rendered the page!')| |onGetAnnotationsSuccess|Function called when annotations are successfully loaded.|n/a|(annotations) => alert('Now displaying ' + annotations.length + ' annotations!')| |onGetAnnotationsError|Function called in case of an error while loading annotations.|n/a|(error) => alert('Error while loading annotations! ' + error.message)| |onGetTextSuccess|Function called when text layer items are successfully loaded.|n/a|(items) => alert('Now displaying ' + items.length + ' text layer items!')| |onGetTextError|Function called in case of an error while loading text layer items.|n/a|(error) => alert('Error while loading text layer items! ' + error.message)| |pageIndex|Which page from PDF file should be displayed, by page index.|0|1| |pageNumber|Which page from PDF file should be displayed, by page number. If provided, pageIndex prop will be ignored.|1|2| |renderAnnotationLayer|Whether annotations (e.g. links) should be rendered.|true|false| |renderInteractiveForms|Whether interactive forms should be rendered. renderAnnotationLayer prop must be set to true.|false|true| |renderMode|Rendering mode of the document. Can be "canvas", "svg" or "none".|"canvas"|"svg"| |renderTextLayer|Whether a text layer should be rendered.|true|false| |rotate|Rotation of the page in degrees. 90 = rotated to the right, 180 = upside down, 270 = rotated to the left.|Page's default setting, usually 0|90| |scale|Page scale.|1.0|0.5| |width|Page width. If neither height nor width are defined, page will be rendered at the size defined in PDF. If you define width and height at the same time, height will be ignored. If you define width and scale at the same time, the width will be multiplied by a given factor.|Page's default width|300|

Outline

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

Props

|Prop name|Description|Default value|Example values| |----|----|----|----| |className|Class name(s) that will be added to rendered element along with the default react-pdf__Outline.|n/a|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 outline item has been clicked. Usually, you would like to use this callback to move the user wherever they requested to.|n/a|({ pageNumber }) => alert('Clicked an item from page ' + pageNumber + '!')| |onLoadError|Function called in case of an error while retrieving the outline.|n/a|(error) => alert('Error while retrieving the outline! ' + error.message)| |onLoadSuccess|Function called when the outline is successfully retrieved.|n/a|(outline) => alert('The outline has been successfully retrieved.')|

License

The MIT License.