Office to PDF SDK — How to Convert Office Documents to PDF

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Converting Office documents to PDF is essential for ensuring compatibility, preserving formatting, and securing files for sharing.

The GDPicture Office to PDF SDK gives you the conversion that relies entirely on its own technology, without the need for third-party tools such as LibreOffice.

In this guide, we’ll show how to set up your development environment and perform these conversions efficiently.

Office to PDF SDK — Getting Started

To start working with GdPicture.NET SDK, you need to set up your development environment.

1. Download and install Visual Studio:
   • Go to Visual Studio
   • Download the Community, Professional, or Enterprise edition.
   • During installation, select the .NET desktop development workload.
2. Install GdPicture.NET SDK:
   • Download the SDK from the official website
   • Follow the installation instructions to add the SDK to your project.
3. Create a New C# Project:
   • Open Visual Studio.
   • Select Create a new project.
   • Choose Console App (.NET).
   • Click Next, enter a project name, and click Create.
4. Add the GdPicture.NET SDK NuGet Package:
   • Open Tools > NuGet Package Manager > Manage NuGet Packages for Solution.
   • If your application runs on .NET 6.0 or newer, select GdPicture.API, and then click Install.
   • If your application runs on .NET 4.6.2 or .NET Core 3.1, select GdPicture, and then click Install.

Adding a Demo Document

Before running the code, add a sample document to the C:\temp folder. This folder should contain the source document you want to convert.

Why Convert Office Documents to PDF?

• Universal Compatibility: PDFs can be opened on any device without requiring the original software.
• Preserved Formatting: The layout, fonts, and images remain intact.
• Security: PDFs support encryption and password protection.
• Smaller File Sizes: Optimized PDFs can reduce document sizes for easier sharing.

Converting Office Documents with GdPicture Office to PDF SDK

Using GdPicture.NET SDK, you can convert Microsoft Office documents, including Word, Excel, and PowerPoint, into high-quality PDF files with ease. This ensures that your documents retain their original formatting, structure, and security features without the need for third-party tools like LibreOffice. Below, we explore how to implement Office-to-PDF conversion efficiently in your applications.

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Convert Word to PDF

Word documents (.docx, .doc) often contain rich text, tables, images, and embedded objects. Converting them to PDF ensures that formatting remains consistent across all devices and platforms, making it ideal for document sharing and archiving.

Code Example:

using GdPicture14;

// Create a new instance of the document converter
GdPictureDocumentConverter gdpictureDocumentConverter = new GdPictureDocumentConverter();

// Load the source Word document
gdpictureDocumentConverter.LoadFromFile(@"C:\temp\source.docx", GdPicture14.DocumentFormat.DocumentFormatDOCX);

// Save the output as a PDF file
gdpictureDocumentConverter.SaveAsPDF(@"C:\temp\output.pdf");

Step-by-Step Explanation:

1. Instantiate the Document Converter: Create an instance of GdPictureDocumentConverter to manage the document conversion.
2. Load the Word Document: Use LoadFromFile() to read the .docx file from a specified path.
3. Convert and Save as PDF: The SaveAsPDF() method processes the document and outputs a PDF version.

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How to Convert Excel to PDF Without Losing Formatting

Excel spreadsheets (.xlsx, .xls) contain tables, charts, and structured data that need to be preserved in the PDF format. Converting Excel files to PDF ensures that numerical and textual data remains readable and formatted correctly.

Code Example:

using GdPicture14;

// Initialize the document converter
GdPictureDocumentConverter gdpictureDocumentConverter = new GdPictureDocumentConverter();

// Load the source Excel document
gdpictureDocumentConverter.LoadFromFile(@"C:\temp\source.xlsx", GdPicture14.DocumentFormat.DocumentFormatXLSX);

// Save the output as a PDF
gdpictureDocumentConverter.SaveAsPDF(@"C:\temp\output.pdf");

Benefits of Excel-to-PDF Conversion:

• Data Integrity: Preserves formulas and cell layouts.
• Consistency: Ensures that data structure remains unchanged.
• Shareability: Makes it easier to distribute financial reports, invoices, and analytics.

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Convert PowerPoint to PDF

PowerPoint presentations (.pptx, .ppt) consist of slides with text, images, animations, and multimedia elements. Converting PowerPoint files to PDF provides a static and easily shareable version of the presentation.

Code Example:

using GdPicture14;

// Initialize the document converter
GdPictureDocumentConverter gdpictureDocumentConverter = new GdPictureDocumentConverter();

// Load the source PowerPoint document
gdpictureDocumentConverter.LoadFromFile(@"C:\temp\source.pptx", GdPicture14.DocumentFormat.DocumentFormatPPTX);

// Save the output as a PDF
gdpictureDocumentConverter.SaveAsPDF(@"C:\temp\output.pdf");

Why Convert PowerPoint to PDF?

• No Need for PowerPoint Software: PDFs can be opened on any device.
• Preserves Slide Formatting: Maintains fonts, colors, and layout.
• Prevents Unwanted Edits: Ensures content integrity when sharing slides.

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Optional Configuration Properties

The GdPictureDocumentConverter allows you to fine-tune the conversion process using various properties. Below are some useful configuration options:

PageRange

Specifies which pages should be included in the PDF conversion.

gdpictureDocumentConverter.PageRange = "1,5,9-12"; // Convert only specified pages

TrackOfficeDocumentRevisions

Determines whether tracked changes in Word documents are included in the final PDF.

gdpictureDocumentConverter.TrackOfficeDocumentRevisions = true;

RenderSheetHeadersAndFooters (Excel)

Controls whether headers and footers appear in the converted PDF.

gdpictureDocumentConverter.RenderSheetHeadersAndFooters = false; // Exclude headers/footers

SplitExcelSheetsIntoPages (Excel)

Specifies whether each worksheet should be a separate page in the output PDF.

gdpictureDocumentConverter.SplitExcelSheetsIntoPages = true;

Example with Custom Configuration:

using GdPicture14;

// Create a document converter instance
GdPictureDocumentConverter gdpictureDocumentConverter = new GdPictureDocumentConverter();

// Load the Word document
gdpictureDocumentConverter.LoadFromFile(@"C:\temp\source.docx", GdPicture14.DocumentFormat.DocumentFormatDOCX);

// Configure conversion options
gdpictureDocumentConverter.PageRange = "1,3-5"; // Convert selected pages only

gdpictureDocumentConverter.TrackOfficeDocumentRevisions = false; // Hide tracked changes

// Save the document as a PDF
gdpictureDocumentConverter.SaveAsPDF(@"C:\temp\output.pdf");

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Running the Project

1. Copy and paste one of the code examples below into Program.cs.
2. Save the file.
3. Click Start (or press F5) to run the program.

Conclusion

Converting Office documents to PDF using GdPicture.NET SDK ensures consistency, security, and easy sharing. With its built-in technology, you can automate the conversion of Word, Excel, and PowerPoint files without relying on external tools. Start integrating these conversions into your applications today!

Download GdPicture and get started. For more information, contact sales.

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