Image to Image in .NET

This page describes how to use the Pdfcrowd online API to convert between images formats in .NET. The API is user-friendly and can be integrated into your application with just a few lines of code.

Installation

Download pdfcrowd-5.14.0-dotnet.zip, unzip it and add a reference to pdfcrowd.dll to your project.

Check out other installation options such as NuGet or GitHub.

Quick Start

Here are .NET examples for quickly getting started with the API. See more examples.

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // create the API client instance
            pdfcrowd.ImageToImageClient client =
                new pdfcrowd.ImageToImageClient("your_username", "your_apikey");

            // configure the conversion
            client.setOutputFormat("jpg");

            // run the conversion and write the result to a file
            client.convertFileToFile("/path/to/logo.png", "logo.jpg");
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);
            throw;
        }
    }
}

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // create the API client instance
            pdfcrowd.ImageToImageClient client =
                new pdfcrowd.ImageToImageClient("your_username", "your_apikey");

            // configure the conversion
            client.setOutputFormat("jpg");

            // run the conversion and write the result to a file
            client.convertUrlToFile("https://pdfcrowd.com/static/images/logo.png", "logo.jpg");
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);
            throw;
        }
    }
}

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // create the API client instance
            pdfcrowd.ImageToImageClient client =
                new pdfcrowd.ImageToImageClient("your_username", "your_apikey");

            // configure the conversion
            client.setOutputFormat("jpg");

            // run the conversion and write the result to a file
            client.convertRawDataToFile(File.ReadAllBytes("/path/to/logo.png"), "logo.jpg");
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);
            throw;
        }
    }
}

Authentication

The credentials to access the API are your Pdfcrowd username and the API key.

Error Handling

It is recommended that you implement error handling to catch errors that the API may return, see the example code below. A list of status codes and their description can be found here.

try 
{
    // call the API 
}
catch(pdfcrowd.Error why) 
{
    // print the error
    System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

    // print the error code
    System.Console.Error.WriteLine("Pdfcrowd Error Code: " + why.getCode());

    // print the error message
    System.Console.Error.WriteLine("Pdfcrowd Error Message: " + why.getMessage());
}

Troubleshooting

Refer to the API Status Codes page if the API returns an error.
You can use setDebugLog and getDebugLogUrl to get detailed info about the conversion, such as load errors, load times, browser console output, etc.
Check the FAQ.
Contact us if you need help or are missing a feature.

API Method Reference

Refer to the Image to Image .NET Reference for a description of all API methods.