PDF Viewer Component for Angular 5+

Demo page

https://vadimdez.github.io/ng2-pdf-viewer/

Plunker Example

https://plnkr.co/edit/OlGVuS6oo2aVanokdBCw?p=preview

Blog post

https://medium.com/@vadimdez/render-pdf-in-angular-4-927e31da9c76

Overview

• Install
• Usage
• Options
• Render local PDF file
• Set custom path to the worker
• Search in the PDF
• Contribute

Install

npm install ng2-pdf-viewer pdfjs-dist @types/pdfjs-dist --save

Note: For angular 4 or less use version 3.0.8

Usage

In case you're using systemjs see configuration here.

Add PdfViewerModule to your module's imports

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app/app.component';

import { PdfViewerModule, LAZY_LOAD_PDFJS } from 'ng2-pdf-viewer';

function lazyLoadPDFJS() {
  return async () => {
    const [PDFJS, PDFJSViewer] = await Promise.all(
      [
        import('pdfjs-dist/build/pdf'),
        import('pdfjs-dist/web/pdf_viewer')
      ]
    );
    return {PDFJS, PDFJSViewer}
  };
}

@NgModule({
  imports: [
    BrowserModule,
    PdfViewerModule.forRoot({
      provide: LAZY_LOAD_PDFJS,
      useFactory: lazyLoadPDFJS
    })
  ],
  declarations: [AppComponent],
  bootstrap: [AppComponent]
})

class AppModule {}

platformBrowserDynamic().bootstrapModule(AppModule);

And then use it in your component

import { Component } from '@angular/core';

@Component({
  selector: 'example-app',
  template: `
  <div>
      <label>PDF src</label>
      <input type="text" placeholder="PDF src" [(ngModel)]="pdfSrc">
  </div>
  <pdf-viewer [src]="pdfSrc" 
              [render-text]="true"
              style="display: block;"
  ></pdf-viewer>
  `
})
export class AppComponent {
  pdfSrc: string = '/pdf-test.pdf';
}

Options

• [src]
• [(page)]
• [stick-to-page]
• [external-link-target]
• [render-text]
• [rotation]
• [zoom]
• [original-size]
• [fit-to-page]
• [show-all]
• [autoresize]
• (after-load-complete)
• (page-rendered)
• (error)
• (on-progress)

[src]

| Property | Type | Required | | --- | ---- | --- | | [src] | string, object, UInt8Array | Required |

Pass pdf location

[src]="'https://vadimdez.github.io/ng2-pdf-viewer/pdf-test.pdf'"

For more control you can pass options object to [src].

Options object for loading protected PDF would be

{
 url: 'https://vadimdez.github.io/ng2-pdf-viewer/pdf-test.pdf',
 withCredentials: true
}

See more attributes here.

[page]

| Property | Type | Required | | --- | ---- | --- | | [page] or [(page)] | number | Required with [show-all]="false" or Optional with [show-all]="true" |

Page number

[page]="1"

supports two way data binding as well

[(page)]="pageVariable"

[stick-to-page]

| Property | Type | Required | | --- | ---- | --- | | [stick-to-page] | boolean | Optional |

Sticks view to the page. Works in combination with [show-all]="true" and page.

[stick-to-page]="true"

[render-text]

| Property | Type | Required | | --- | ---- | --- | | [render-text] | boolean | Optional |

Enable text rendering, allows to select text

[render-text]="true"

[external-link-target]

| Property | Type | Required | | --- | ---- | --- | | [external-link-target] | string | Optional |

Used in combination with [render-text]="true"

Link target

• blank
• none
• self
• parent
• top

[external-link-target]="'blank'"

[rotation]

| Property | Type | Required | | --- | ---- | --- | | [rotation] | number | Optional |

Rotate PDF

Allowed step is 90 degree, ex. 0, 90, 180

[rotation]="90"

[zoom]

| Property | Type | Required | | --- | ---- | --- | | [zoom] | number | Optional |

Zoom pdf

[zoom]="0.5"

[original-size]

| Property | Type | Required | | --- | ---- | --- | | [original-size] | boolean | Optional |

• if set to true - size will be as same as original document
• if set to false - size will be as same as container block

[original-size]="true"

[fit-to-page]

| Property | Type | Required | | --- | ---- | --- | | [fit-to-page] | boolean | Optional |

Works in combination with [original-size]="true". You can show your document in original size, and make sure that it's not bigger then container block.

[fit-to-page]="false"

[show-all]

| Property | Type | Required | | --- | ---- | --- | | [show-all] | boolean | Optional |

Show single or all pages altogether

[show-all]="true"

[autoresize]

| Property | Type | Required | | --- | ---- | --- | | [autoresize] | boolean | Optional |

Turn on or off auto resize.

!Important To make [autoresize] work - make sure that [original-size]="false" and pdf-viewer tag has max-width or display are set.

[autoresize]="true"

(after-load-complete)

| Property | Type | Required | | --- | ---- | --- | | (after-load-complete) | callback | Optional |

Get PDF information with callback

First define callback function "callBackFn" in your controller,

callBackFn(pdf: PDFDocumentProxy) {
   // do anything with "pdf"
}

And then use it in your template:

(after-load-complete)="callBackFn($event)"

(page-rendered)

| Property | Type | Required | | --- | ---- | --- | | (page-rendered) | callback | Optional |

Get event when a page is rendered. Called for every page rendered.

Define callback in your component:

pageRendered(e: CustomEvent) {
  console.log('(page-rendered)', e);
}

And then bind it to <pdf-viewer>:

(page-rendered)="pageRendered($event)

(error)

| Property | Type | Required | | --- | ---- | --- | | (error) | callback | Optional |

Error handling callback

Define callback in your component's class

onError(error: any) {
  // do anything
}

Then add it to pdf-component in component's template

(error)="onError($event)"

(on-progress)

| Property | Type | Required | | --- | ---- | --- | | (on-progress) | callback | Optional |

Loading progress callback - provides progress information total and loaded bytes. Is called several times during pdf loading phase.

Define callback in your component's class

onProgress(progressData: PDFProgressData) {
  // do anything with progress data. For example progress indicator
}

Then add it to pdf-component in component's template

(on-progress)="onProgress($event)"

Render local PDF file

In your html template add input:

<input (change)="onFileSelected()" type="file" id="file">

and then add onFileSelected method to your component:

onFileSelected() {
  let $img: any = document.querySelector('#file');

  if (typeof (FileReader) !== 'undefined') {
    let reader = new FileReader();

    reader.onload = (e: any) => {
      this.pdfSrc = e.target.result;
    };

    reader.readAsArrayBuffer($img.files[0]);
  }
}

Set custom path to the worker

By default the worker is loaded from cdnjs.cloudflare.com.

In your code update path to the worker to be for example /pdf.worker.js

(<any>window).pdfWorkerSrc = '/pdf.worker.js';

This should be set before pdf-viewer component is rendered.

Search in the PDF

Use pdfFindController for search functionality.

In your component's ts file:

• Add reference to pdf-viewer,
• then when needed execute search()

@ViewChild(PdfViewerComponent) private pdfComponent: PdfViewerComponent;

search(stringToSearch: string) {
  this.pdfComponent.pdfFindController.executeCommand('find', {
    caseSensitive: false, findPrevious: undefined, highlightAll: true, phraseSearch: true, query: stringToSearch
  });
}

Contribute

See CONTRIBUTING.md

License

MIT © Vadym Yatsyuk