JavaScript PDF Library: Export Annotation & Form Data

Overview

The Syncfusion JavaScript PDF Library enables developers to easily export annotation and form field data from PDF documents into industry‑standard formats such as JSON, XFDF, FDF, and XML. These export options allow seamless integration with workflows, storage systems, or external applications that rely on structured data interchange.

Using straightforward JavaScript APIs, you can serialize highlights, notes, stamps, free‑text annotations, and form field values into the format of your choice—making it simple to process, persist, or reuse PDF data across different systems.

This feature works smoothly across modern JavaScript frameworks and runtimes, including JavaScript, TypeScript, Angular, React, Vue, ASP.NET Core, and Node.js, supporting both client‑side and server‑side PDF processing scenarios.

import {PdfDocument, DataFormat} from '@syncfusion/ej2-pdf';

// Load the base PDF document from resources
let document: PdfDocument = new PdfDocument(data);
// Imports annotations from to the PDF document.
document.importAnnotations(jsonData, DataFormat.json);
// Save the PDF document
document.save('output.pdf');
// Close the document
document.destroy();