Converting PDF documents to image format

Convert PDF documents to images when you need previews, thumbnails, or image-based processing output. Image export makes document content usable in systems that don’t support PDF rendering.

How Nutrient supports this workflow

Nutrient .NET SDK converts PDF files to images.

You don’t need to manage:

• PDF structure parsing
• Rasterization of vector content and fonts
• Color and resolution rendering details
• Custom rendering pipelines

Use the SDK API to generate image output in your application.

Complete implementation

This example shows a complete PDF-to-image conversion flow.

Import the Nutrient namespace:

using Nutrient;

Open the PDF with a using declaration(opens in a new tab). The runtime disposes the document automatically:

try
{
    using Document document = Document.Open("input_image_based.pdf");

Export the document as a PNG file and catch NutrientException to handle SDK errors:

    document.ExportAsImage("output.png");
    Console.WriteLine("Successfully converted to output.png");
}
catch (NutrientException e)
{
    Console.Error.WriteLine($"Error: {e.Message}");
    Environment.Exit(1);
}

Multi-page documents

When the input PDF has more than one page, PNG, JPEG, and BMP outputs are written as numbered files (output-1.png, output-2.png, …) — one image per page. TIFF preserves the single-file multi-page form. Refer to the PDF pages to images guide for the per-page case.

Summary

The conversion flow has two steps:

1. Open the document.
2. Export it as an image.

Nutrient handles PDF rendering and image generation, so you don’t need to implement rasterization logic yourself.