Master PDF Font Substitution in .NET with GroupDocs.Conversion

Ensuring consistent typography during document conversion is vital. This comprehensive guide demonstrates using GroupDocs.Conversion for .NET to manage font substitutions effectively when converting documents to PDF.

What You’ll Learn

• Install and configure GroupDocs.Conversion for .NET
• Implement PDF font substitution using C#
• Optimize conversion settings for best results
• Explore real-world applications of this feature

Let’s begin by setting up the necessary environment!

Prerequisites

To follow along, ensure you have:

• Libraries and Versions: Install GroupDocs.Conversion version 25.3.0.
• Environment Setup: A working .NET environment (e.g., Visual Studio).
• Knowledge Prerequisites: Basic understanding of C# programming.

Installing GroupDocs.Conversion for .NET

Install the package using either NuGet or .NET CLI:

NuGet Package Manager Console:

Install-Package GroupDocs.Conversion -Version 25.3.0

.NET CLI:

dotnet add package GroupDocs.Conversion --version 25.3.0

License Acquisition

GroupDocs offers a free trial to explore their features. For extended usage, consider purchasing a license or obtaining a temporary one:

• Free Trial: Download here
• Temporary License: Request here
• Purchase: Buy now

With the environment ready, let’s set up GroupDocs.Conversion for .NET.

Setting Up GroupDocs.Conversion for .NET

Basic Initialization and Setup

Initialize your conversion setup in C# as follows:

using GroupDocs.Conversion;
using System.IO;

string outputFolder = "YOUR_OUTPUT_DIRECTORY";
string inputFile = "YOUR_DOCUMENT_DIRECTORY/SAMPLE_ONE";

// Initialize converter with file path
using (Converter converter = new Converter(inputFile))
{
    PdfConvertOptions options = new PdfConvertOptions();
    string outputFile = Path.Combine(outputFolder, "converted.pdf");
    converter.Convert(outputFile, options);
}

This code snippet converts a document using default settings. Now let’s delve into font substitution.

Implementation Guide

Font Substitution in PDF Conversion

Font substitutions ensure your documents look consistent across different systems by replacing unavailable fonts with specified alternatives.

Specifying Font Substitutions

To specify font substitutions, follow these steps:

1. Define Font Substitutions

Set up a function to define which fonts to substitute and their replacements:

using System;
using System.Collections.Generic;
using GroupDocs.Conversion.Contracts;
using GroupDocs.Conversion.Options.Load;

Func<LoadContext, LoadOptions> getLoadOptions = loadContext => new NoteLoadOptions
{
    FontSubstitutes = new List<FontSubstitute>
    {
        FontSubstitute.Create("Tahoma\