Where does PdfDocumentExtensions live in the IronPDF API?

PdfDocumentExtensions is in the IronPdf namespace, shipped in IronPdf.dll.

What is the PdfDocumentExtensions class used for in C#?

PdfDocumentExtensions is the IronPDF class that extension methods for PdfDocument class. It is part of the IronPdf namespace and is used through the IronPDF C# API.

What methods are available on PdfDocumentExtensions?

Common methods include ToDocument. Use these on an instance to perform the corresponding IronPDF operation in C#.

Class PdfDocumentExtensions

Extension methods for PdfDocument class

Inheritance

System.Object

PdfDocumentExtensions

Namespace: IronPdf

Assembly: IronPdf.dll

Syntax

public static class PdfDocumentExtensions : Object

Use PdfDocumentExtensions in IronPDF when a C# application works with PDF generation. It represents extension methods for PdfDocument class.

PdfDocumentExtensions matters when an application needs to configure or invoke PDF generation from C# code. The class encapsulates the related options and behavior in a single object that is set up once and reused across render or processing calls. Typical scenarios include batch generation pipelines, templated document workflows, and integration with existing C# document services.

To use PdfDocumentExtensions, instantiate or obtain it from the relevant entry point in the IronPDF C# API. Key methods include ToDocument. Assign options or invoke methods on the instance to configure or perform the operation.

using IronPdf;

// Obtain PdfDocumentExtensions from the relevant entry point in the IronPDF API
void Configure(PdfDocumentExtensions instance)
{
    instance.ToDocument();
}

For the broader workflow, see the IronPDF C# documentation for related how-to guides and examples. For broader context, the PDF generation portion of the IronPDF C# API contains related types that work with PdfDocumentExtensions directly. PdfDocumentExtensions exposes additional members beyond those highlighted above; the reference tables on this page list the full set. In application code, treat PdfDocumentExtensions as a configured object that is constructed once and reused across operations rather than instantiated per call. Configuration is generally idempotent: assigning the same property value twice has the same effect as assigning it once. For diagnostic purposes, inspect the relevant PdfDocumentExtensions property after each operation to confirm the configured state. See the constructors, properties, and methods tables below for the complete API surface of PdfDocumentExtensions. Application code typically obtains or instantiates a single PdfDocumentExtensions and shares it across multiple IronPDF operations rather than recreating it per call. For multi-threaded scenarios, follow the threading guidance for the relevant IronPDF entry point; PdfDocumentExtensions instances are not assumed to be thread-safe unless documented.

Methods

ToDocument(IDocumentId, String, String)

Convert a PdfDocument interface to a full PdfDocument

Declaration

public static PdfDocument ToDocument(this IDocumentId id, string Password = "", string OwnerPassword = "")

Parameters

Type	Name	Description
IronSoftware.Abstractions.Pdf.IDocumentId	id	DocumentId to convert
System.String	Password	Pdf document password
System.String	OwnerPassword	Pdf document owner password

Returns

Type	Description
PdfDocument	Full PdfDocument

Exceptions

Type	Condition
System.InvalidCastException	Failed to convert