Convert Markdown to PDF in C#

To convert Markdown to PDF in C#, first use Converter.ConvertMarkdown() to create an intermediate HTMLDocument, then render it to PDF with Converter.ConvertHTML() and PdfSaveOptions.

Markdown is designed for readable plain-text authoring. PDF is a fixed-layout format used for printing, archiving, sharing, and document workflows. In Aspose.HTML for .NET, Markdown to PDF conversion goes through the Markdown to HTML stage because Markdown content is parsed into an HTML document before it is rendered to PDF.

Before running the examples, install and configure Aspose.HTML for .NET in your project. The complete C# example project is available in the Aspose.HTML for .NET GitHub repository.

Convert Markdown to PDF in C#

Use this workflow when Markdown content is created or prepared by your application and then rendered to PDF. The example creates a Markdown source, converts it to an intermediate HTMLDocument, and renders the result with PdfSaveOptions.

The workflow is:

1. Prepare the Markdown source file.
2. Convert Markdown to an HTMLDocument with Converter.ConvertMarkdown(sourcePath).
3. Create a PdfSaveOptions instance.
4. Call Converter.ConvertHTML(document, options, savePath) to write the PDF file.

// Convert Markdown to PDF using C#

// Prepare a path to a source Markdown file
string sourcePath = Path.Combine(OutputDir, "document.md");

// Prepare a simple Markdown example
string code = "### Hello, World!" +
              "\r\n" +
              "[visit applications](https://products.aspose.app/html/applications)";
// Create a Markdown file
File.WriteAllText(sourcePath, code);

// Convert Markdown to HTML 
using HTMLDocument document = Converter.ConvertMarkdown(sourcePath);

// Prepare a path for converted PDF file saving 
string savePath = Path.Combine(OutputDir, "document-output.pdf");

// Convert the HTML document to PDF file format
Converter.ConvertHTML(document, new PdfSaveOptions(), savePath);

Convert Markdown to PDF with PdfSaveOptions

Use PdfSaveOptions when the generated PDF needs custom rendering settings. The example below converts an existing Markdown file and applies PDF save options before rendering.

// Convert Markdown to PDF in C# with custom settings

// Prepare a path to a source Markdown file
string sourcePath = Path.Combine(DataDir, "nature.md");

// Prepare a path to save the converted file
string savePath = Path.Combine(OutputDir, "nature-output.pdf");

// Convert Markdown to HTML
using HTMLDocument document = Converter.ConvertMarkdown(sourcePath);

// Initialize PdfSaveOptions. Set up the resolutions, JpegQuality and change the background color to AliceBlue 
PdfSaveOptions options = new PdfSaveOptions()
{
    HorizontalResolution = 200,
    VerticalResolution = 200,
    BackgroundColor = System.Drawing.Color.AliceBlue,
    JpegQuality = 100
};

// Convert the HTML document to PDF file format
Converter.ConvertHTML(document, options, savePath);

Option	Use it to control
PageSetup	Page size, margins, and page layout settings.
JpegQuality	JPEG image compression quality in the PDF output. The default value is 95.
Css	CSS processing behavior through CssOptions.
BackgroundColor	The color used to fill the page background. The default value is transparent.
HorizontalResolution and VerticalResolution	Output resolution values used by the rendering process. The default value is 300 dpi for each property.
Encryption	PDF encryption settings. If not configured, the PDF is created without encryption.

Markdown to PDF Workflow Notes

Markdown to PDF is not a direct file-to-file rendering step. ConvertMarkdown() parses Markdown and creates an HTMLDocument; ConvertHTML() then renders that document to PDF. This separation is useful because the same intermediate HTML document can also be rendered to DOCX, XPS, or image formats with different save options.

Use Fine-Tuning Converters for deeper rendering settings, and Resize Document During Conversion when page size and margins need explicit control.

Related Markdown Conversion Guides

• Convert Markdown to HTML – create HTML output directly from Markdown.
• Convert Markdown to DOCX – save Markdown content as a Word document.
• Convert Markdown to XPS – render Markdown as fixed-layout XPS output.
• Convert Markdown to Image – render Markdown as JPG, PNG, BMP, GIF, or TIFF.

Other Platforms

• Convert Markdown to PDF in Java
• Convert Markdown to PDF in Python via .NET

Try Online Markdown to PDF Conversion

Use the online MD to PDF Converter for quick manual conversion. Use Aspose.HTML for .NET when Markdown to PDF conversion must run inside a C# application, service, or documentation pipeline.