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Professional PDF.js Viewing & Annotations - Try for free

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Common use cases

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Open a document

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Save a document

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Viewer

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UI Customization

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Annotations

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Collaboration

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Forms

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Signature

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Searching

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Measurement

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Compare

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Advanced Capabilities

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PDF.js Express REST API

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Migration Guides

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Create free text annotations in PDF.js Express

The following features are available in:

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PDF.js Express Viewer

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PDF.js Express Viewer is a free viewer with limited capabilities compared to PDF.js Express Plus

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PDF.js Express Plus

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PDF.js Express Plus is a commercial PDF SDK for viewing, annotating, signing, form filling and more

Here is an example of creating a free text annotation, but creating other types of annotations are similar.

WebViewer(...)
  .then(instance => {
    const { Annotations, annotManager, docViewer } = instance;

    docViewer.on('documentLoaded', () => {
      const freeText = new Annotations.FreeTextAnnotation();
      freeText.PageNumber = 1;
      freeText.X = 150;
      freeText.Y = 200;
      freeText.Width = 150;
      freeText.Height = 50;
      freeText.setPadding(new Annotations.Rect(0, 0, 0, 0));
      freeText.setContents('My Text');
      freeText.FillColor = new Annotations.Color(0, 255, 255);
      freeText.FontSize = '16pt';

      annotManager.addAnnotation(freeText);
      annotManager.redrawAnnotation(freeText);
    })
  })
WebViewer(...)
  .then(instance => {
    const { 
      Annotations, 
      annotationManager, 
      documentViewer 
    } = instance.Core;

    documentViewer.addEventListener('documentLoaded', () => {
      const freeText = new Annotations.FreeTextAnnotation();
      freeText.PageNumber = 1;
      freeText.X = 150;
      freeText.Y = 200;
      freeText.Width = 150;
      freeText.Height = 50;
      freeText.setPadding(new Annotations.Rect(0, 0, 0, 0));
      freeText.setContents('My Text');
      freeText.FillColor = new Annotations.Color(0, 255, 255);
      freeText.FontSize = '16pt';

      annotationManager.addAnnotation(freeText);
      annotationManager.redrawAnnotation(freeText);
    })
  })

Other examples

Creating rectangle annotations
To create a rectangle annotation.

Creating stamp annotations
To create a stamp annotation.

Creating highlight annotations
To create a highlight annotation.

Creating file attachment annotations
To create a file attachment annotation.

Creating custom annotations
To create a customized annotation.