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Merge branch 'development' into EJ2-1012499-redaction
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‎Document-Processing-toc.html‎

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<li><a href="/document-processing/pdf/pdf-viewer/react/text-search">Text Search</a></li>
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<li>Annotation
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<ul>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/overview">Overview</a></li>
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<li>Annotation Types
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<ul>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotation-types/highlight-annotation">Highlight</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotation-types/volume-annotation">Volume</a></li>
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</ul>
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</li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/text-markup-annotation">Text Markup Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/shape-annotation">Shape Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/stamp-annotation">Stamp Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/sticky-notes-annotation">Sticky NotesAnnotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/measurement-annotation">Measurement Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/free-text-annotation">Free Text Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/ink-annotation">Ink Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/line-angle-constraints">Line Angle Constraints</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/comments">Comments</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/signature-annotation">Handwritten signature</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotation-event">Annotations Events</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotations-in-mobile-view">Annotations in Mobile view</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/toolbar-customization/annotation-toolbar">Annotation Toolbar</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/create-modify-annotation">Create and modify Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/customize-annotation">Customize Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/delete-annotation">Remove Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotations-undo-redo">Undo or Redo Annotation Changes</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotation-permission">Annotation Permission</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/signature-annotation">Handwritten Signature</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/line-angle-constraints">Line Angle Constraint</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/custom-data">Adding custom Data in annotations</a></li>
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<li>Export and Import Annotations
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<ul>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/export-import/export-annotation">Export Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/export-import/import-annotation">Import Annotation</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/export-import/export-import-events">Export and Import Events</a></li>
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</ul>
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</li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/comments">Comments and Replies</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotation-event">Annotation Events</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/custom-tools">Custom tools</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotations-in-mobile-view">Annotation in Mobile View</a></li>
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<li><a href="/document-processing/pdf/pdf-viewer/react/annotation/annotations-api">APIs</a></li>
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</ul>
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</li>
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<li>Redaction and Security

‎Document-Processing/PDF/PDF-Library/javascript/DigitalSignature.md‎

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// Destroy the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}
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## Sign existing signature field
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This section explains how to sign an existing unsigned signature field in a PDF using the JavaScript PDF library. You can locate predefined signature fields and apply a digital signature directly by calling `PdfSignatureField.setSignature()` method, without altering the document layout. This is ideal for templates where signature placeholders already exist, allowing you to add digital signatures to the field using a certificate and signature settings.
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{% tabs %}
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{% highlight typescript tabtitle="TypeScript" %}
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import {PdfDocument, PdfForm, DigestAlgorithm, CryptographicStandard, PdfSignatureField} from '@syncfusion/ej2-pdf';
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// Load an existing PDF document
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let document: PdfDocument = new PdfDocument(data);
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// Access loaded form
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let form: PdfForm = document.form;
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// Access the loaded form field
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let field: PdfSignatureField = form.fieldAt(0) as PdfSignatureField;
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// Create a digital signature with CMS + SHA-256
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const signature: PdfSignature = PdfSignature.create(certificate, 'password', {
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digestAlgorithm: DigestAlgorithm.sha256,
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cryptographicStandard: CryptographicStandard.cms
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});
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// Apply the signature to the field
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field.setSignature(signature);
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// Save the document
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document.save('Output.pdf');
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% highlight javascript tabtitle="JavaScript" %}
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// Load an existing PDF document
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var document = new ej.pdf.PdfDocument(data);
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// Access loaded form
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var form = document.form;
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// Access the loaded form field
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var field = form.fieldAt(0);
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// Create a digital signature with CMS + SHA-256
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const signature = ej.pdf.PdfSignature.create(certificate, 'password', {
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digestAlgorithm: ej.pdf.DigestAlgorithm.sha256,
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cryptographicStandard: ej.pdf.CryptographicStandard.cms
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});
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// Apply the signature to the field
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field.setSignature(signature);
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// Save the document
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document.save('Output.pdf');
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}
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## Remove existing digital signature
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This section explains how to remove an existing digital signature from a PDF by using `PdfForm.removeField()` method to delete the signature field entirely. Removing the field clears the signature dictionary, allowing the document to be edited, corrected, or re‑signed as needed. This is useful when preparing a PDF for updates or resolving signature‑related issues.
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{% tabs %}
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{% highlight typescript tabtitle="TypeScript" %}
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import {PdfDocument, PdfForm, PdfSignatureField} from '@syncfusion/ej2-pdf';
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// Load an existing PDF document
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let document: PdfDocument = new PdfDocument(data);
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// Access loaded form
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let form: PdfForm = document.form;
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// Access the loaded form field
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let field: PdfSignatureField = form.fieldAt(0) as PdfSignatureField;
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// Remove the signature field
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if (field instanceof PdfSignatureField) {
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document.form.removeField(field);
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}
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// Destroy the document
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document.destroy();
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{% endhighlight %}
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{% highlight javascript tabtitle="JavaScript" %}
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// Load an existing PDF document
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var document = new ej.pdf.PdfDocument(data);
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// Access loaded form
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var form = document.form;
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// Access the loaded form field
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var field = form.fieldAt(0);
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// Remove the signature field
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if (field instanceof ej.pdf.PdfSignatureField) {
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document.form.removeField(field);
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}
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// Destroy the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}
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## Document revisions
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Digital signatures in a PDF create new revisions, keeping every previous version intact. These revisions let you see how the document looked when each signature was applied and check if anything changed later. You can access all revisions using `PdfDocument.getRevisions()` method or get a specific one using `PdfSignatureField.getRevision()` method.
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{% tabs %}
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{% highlight typescript tabtitle="TypeScript" %}
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import {PdfDocument, PdfForm, PdfSignatureField} from '@syncfusion/ej2-pdf';
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// Load an existing PDF document
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let document: PdfDocument = new PdfDocument(data);
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// Access loaded form
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let form: PdfForm = document.form;
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// Access the loaded form field
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let signature: PdfSignatureField = form.fieldAt(0);
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// Retrieve all revision indexes of the PDF document
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let revisions: number[] = document.getRevisions();
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// Gets the revision number associated with the signature field
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let revision: number = signature.getRevision();
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// Destroy the document
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document.destroy();
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{% endhighlight %}
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{% highlight javascript tabtitle="JavaScript" %}
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// Load an existing PDF document
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var document = new ej.pdf.PdfDocument(data);
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// Access loaded form
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var form = document.form;
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// Access the loaded form field
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var signature = form.fieldAt(0);
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// Retrieve all revision indexes of the PDF document
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var revisions = document.getRevisions();
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// Gets the revision number associated with the signature field
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var revision = signature.getRevision();
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// Destroy the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}

‎Document-Processing/PDF/PDF-Library/javascript/FormFields.md‎

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{% endhighlight %}
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{% endtabs %}
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## Add a date field to a PDF form
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This section shows how to add a date field to a PDF form, allowing users to enter or select a date within the document. The JavaScript PDF library lets you configure the date field’s appearance, format, and behavior. You can also attach actions that run custom scripts or validations whenever the field is focused, changed, or submitted.
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{% tabs %}
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{% highlight typescript tabtitle="TypeScript" %}
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import {PdfDocument, pdfPage, PdfForm, PdfTextBoxField, PdfJavaScriptAction } from '@syncfusion/ej2-pdf';
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// Create a new PDF document
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let document: PdfDocument = new PdfDocument();
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// Add a new page to the document
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let page: pdfPage = document.addPage();
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// Access loaded form
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let form: PdfForm = document.form;
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// Create a new text box field
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const field: PdfTextBoxField = new PdfTextBoxField(page, 'DateField', {
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x: 50, y: 200, width: 150, height: 20,
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});
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// Sets the text value to text box field
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field.text = '18/08/2003';
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// Sets date formate
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const format: string = 'yyyy-mm-dd';
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// Add a JavaScript action to run custom scripts or validations
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field.actions.format = new PdfJavaScriptAction(`AFDate_FormatEx("${format}");`);
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field.actions.keyPressed = new PdfJavaScriptAction(`AFDate_KeystrokeEx("${format}"):`);
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field.actions.validate = new PdfJavaScriptAction(`AFDate_Validate("${format}");`);
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// Add a new form field
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form.add(field);
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// Save the document
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document.save('output.pdf');
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// Destroy the document
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document. Destroy();
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{% endhighlight %}
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{% highlight javascript tabtitle="JavaScript" %}
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// Create a new PDF document instance
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var document = new ej.pdf.PdfDocument();
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// Add a new page to the document
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var page = document.addPage();
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// Access loaded form
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var form = document.form;
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// Create a new text box field
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const field = new ej.pdf.PdfTextBoxField(page, 'fieldF', {
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x: 50, y: 200, width: 150, height: 20
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});
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// Sets the text value to text box field
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field.text = '18/08/2003';
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// Sets date formate
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const format = 'yyyy-mm-dd';
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// Add a JavaScript action to run custom scripts or validations
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field.actions.format = new ej.pdf.PdfJavaScriptAction(`AFDate_FormatEx("${format}");`);
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field.actions.keyPressed = new ej.pdf.PdfJavaScriptAction(`AFDate_KeystrokeEx("${format}"):`);
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field.actions.validate = new ej.pdf.PdfJavaScriptAction(`AFDate_Validate("${format}");`);
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// Add a new form field
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form.add(field);
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// Save the document
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document.save('Output.pdf');
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// Destroy the document
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document. Destroy();
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{% endhighlight %}
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{% endtabs %}
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To prevent grouping when adding fields with the same name, you can enable the `fieldAutoNaming` property of `PdfForm` class. Setting fieldAutoNaming to true ensures that each field gets a unique name internally, even if you specify the same name during creation.

‎Document-Processing/PDF/PDF-Library/javascript/HyperLinks.md‎

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let size: Size = font.measureString('Syncfusion');
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// Create a new text web link annotation
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let annotation: PdfTextWebLinkAnnotation = new PdfTextWebLinkAnnotation({ x: 50, y: 40, width: size.width, height: size.height }, { r: 0, g: 0, b: 0}, { r: 165, g: 42, b: 42 }, 1);
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// Sets the URL of the annotation.
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annotation.url = ‘http://www.syncfusion.com’;
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// Add annotation to the page
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page.annotations.add(annotation);
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var size = font.measureString('Syncfusion');
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// Create a new text web link annotation
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var annotation = new ej.pdf.PdfTextWebLinkAnnotation({ x: 50, y: 40, width: size.width, height: size.height }, { r: 0, g: 0, b: 0 }, { r: 165, g: 42, b: 42 }, 1);
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// Sets the URL of the annotation.
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annotation.url = ‘http://www.syncfusion.com’;
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// Add annotation to the page
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page.annotations.add(annotation);
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}
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## Modifying or updating existing hyperlinks
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This example shows how to update hyperlink annotations in a PDF using Syncfusion’s JavaScript PDF Library. Link annotations retrieved from a page can have their URL or bounding region updated as needed. This makes it easy to refresh outdated links or adjust navigation behavior whenever the document changes.
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{% tabs %}
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{% highlight typescript tabtitle="TypeScript" %}
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import { PdfDocument, PdfPage, PdfTextWebLinkAnnotation } from '@syncfusion/ej2-pdf';
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// Load an existing PDF document
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let document: PdfDocument = new PdfDocument(data);
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// Access the first page
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let page: PdfPage = document.getPage(0);
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// Get the first annotation of the page
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let annotation: PdfAnnotation = page.annotations.at(0);
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// Modified its properties
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if (annotation instanceof PdfTextWebLinkAnnotation) {
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annotation.url = 'https://www.google.co.in/';
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}
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// Save the document
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document.save('Output.pdf');
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% highlight javascript tabtitle="JavaScript" %}
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// Load an existing PDF document
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var document = new ej.pdf.PdfDocument(data);
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// Access the first page
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var page = document.getPage(0);
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// Get the first annotation of the page
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var annotation = page.annotations.at(0);
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// Modified its properties
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if (annotation instanceof ej.pdf.PdfTextWebLinkAnnotation) {
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annotation.url = 'https://www.google.co.in/';
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}
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// Save the document
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document.save('Output.pdf');
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}
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## Removing hyperlinks
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This example demonstrates how to remove hyperlink annotations from a PDF using Syncfusion’s JavaScript PDF Library. By reviewing each annotation and checking whether it represents a hyperlink, you can remove it using either `remove()` or `removeAt()` methods. This helps clean up outdated or unwanted links while keeping the rest of the document content intact.
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{% tabs %}
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{% highlight typescript tabtitle="TypeScript" %}
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import { PdfDocument, PdfPage, PdfTextWebLinkAnnotation } from '@syncfusion/ej2-pdf';
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// Load an existing PDF document
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let document: PdfDocument = new PdfDocument(data);
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// Access the first page
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let page: PdfPage = document.getPage(0);
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// Access first annotation from the PDF page
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let annotation: PdfTextWebLinkAnnotation = page.annotations.at(0) as PdfTextWebLinkAnnotation;
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// Remove an annotation from the collection
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page.annotations.remove(annotation);
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// Remove an annotation with specific index
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page.annotations.removeAt(1);
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// Save the document
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document.save('output.pdf');
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% highlight javascript tabtitle="JavaScript" %}
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// Load an existing PDF document
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var document = new ej.pdf.PdfDocument(data);
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// Access the first page
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var page = document.getPage(0);
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// Access first annotation from the PDF page
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var annotation = page.annotations.at(0);
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// Remove an annotation from the collection
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if (annotation instanceof ej.pdf.PdfTextWebLinkAnnotation) {
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page.annotations.remove(annotation);
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}
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// Remove an annotation with specific index
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page.annotations.removeAt(1);
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// Save the document
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document.save('output.pdf');
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// Close the document
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document.destroy();
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{% endhighlight %}
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{% endtabs %}

‎Document-Processing/PDF/PDF-Library/javascript/Image-Extraction.md‎

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---
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title: Image Extraction in TypeScript PDF library | Syncfusion
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title: Image Extraction in JavaScript PDF library | Syncfusion
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description: This section explains how to extract images from PDF documents and retrieve their properties such as position and size using the JavaScript PDF library
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platform: document-processing
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control: PDF
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documentation: UG
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---
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# Image Extraction in TypeScript PDF library
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# Image Extraction in JavaScript PDF library
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The PDF provides support to extract images from PDF documents and retrieve their properties such as bounds, index and raw byte data.
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