PDF to HTML / .NET Examples

This page contains various examples of using the PDF to HTML API in .NET. The examples are complete and fully functional. Read more about how to convert PDF to HTML in .NET.

Basic examples
ASP.NET Web Forms examples

Basic examples

PDF file to HTML file

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Run the conversion and save the result to a file.
            client.convertFileToFile("/path/to/logo.pdf", "logo.html");
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

PDF file to in-memory HTML

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Run the conversion and store the result in the `html` variable.
            byte[] html = client.convertFile("/path/to/logo.pdf");

            // at this point the "html" variable contains HTML raw data and
            // can be sent in an HTTP response, saved to a file, etc.
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

PDF file to HTML stream

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Create an output stream for the conversion result
            FileStream outputStream = new FileStream("logo.html", FileMode.CreateNew);

            // run the conversion and write the result to the output stream.
            client.convertFileToStream("/path/to/logo.pdf", outputStream);

            // Close the output stream.
            outputStream.Close();
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

PDF url to HTML file

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Run the conversion and save the result to a file.
            client.convertUrlToFile("https://pdfcrowd.com/static/pdf/apisamples/invoice.pdf", "invoice.html");
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

PDF url to in-memory HTML

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Run the conversion and store the result in the `html` variable.
            byte[] html = client.convertUrl("https://pdfcrowd.com/static/pdf/apisamples/invoice.pdf");

            // at this point the "html" variable contains HTML raw data and
            // can be sent in an HTTP response, saved to a file, etc.
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

PDF url to HTML stream

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Create an output stream for the conversion result
            FileStream outputStream = new FileStream("invoice.html", FileMode.CreateNew);

            // run the conversion and write the result to the output stream.
            client.convertUrlToStream("https://pdfcrowd.com/static/pdf/apisamples/invoice.pdf", outputStream);

            // Close the output stream.
            outputStream.Close();
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

In-memory PDF to HTML file

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Run the conversion and save the result to a file.
            client.convertRawDataToFile(File.ReadAllBytes("/path/to/hello_world.pdf"), "logo.html");
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

In-memory PDF to in-memory HTML

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Run the conversion and store the result in the `html` variable.
            byte[] html = client.convertRawData(File.ReadAllBytes("/path/to/hello_world.pdf"));

            // at this point the "html" variable contains HTML raw data and
            // can be sent in an HTTP response, saved to a file, etc.
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

In-memory PDF to HTML stream

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Create an output stream for the conversion result
            FileStream outputStream = new FileStream("logo.html", FileMode.CreateNew);

            // run the conversion and write the result to the output stream.
            client.convertRawDataToStream(File.ReadAllBytes("/path/to/hello_world.pdf"), outputStream);

            // Close the output stream.
            outputStream.Close();
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

Get info about the current conversion

using System;
using System.IO;

public class ApiTest
{
    public static void Main()
    {
        try
        {
            // Create an API client instance.
            pdfcrowd.PdfToHtmlClient client =
                new pdfcrowd.PdfToHtmlClient("demo", "demo");

            // Configure the conversion.
            client.setDebugLog(true);

            // Run the conversion and save the result to a file.
            client.convertFileToFile("/path/to/logo.pdf", "logo.html");
            
            // print URL pointing to the debug log for this request.
            System.Console.WriteLine("Debug log url: " + client.getDebugLogUrl());
            
            // print number of conversion credits remaining in your account.
            System.Console.WriteLine("Remaining credit count: " + client.getRemainingCreditCount());
            
            // print number of credits consumed for this conversion.
            System.Console.WriteLine("Consumed credit count: " + client.getConsumedCreditCount());
            
            // print unique identifier assigned to this conversion job.
            System.Console.WriteLine("Job id: " + client.getJobId());
            
            // print total number of pages in the output document.
            System.Console.WriteLine("Page count: " + client.getPageCount());
            
            // print size of the output data in bytes.
            System.Console.WriteLine("Output size: " + client.getOutputSize());
        }
        catch(pdfcrowd.Error why)
        {
            System.Console.Error.WriteLine("PDFCrowd Error: " + why);
            throw;
        }
    }
}

ASP.NET Web Forms examples

PDF file to HTML in ASP.NET Web Forms

using System;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.Mvc;

namespace PdfcrowdDemo
{
    public partial class Default: System.Web.UI.Page
    {
        protected override void Render(HtmlTextWriter writer)
        {
            try
            {
                // Create an API client instance.
                pdfcrowd.PdfToHtmlClient client =
                    new pdfcrowd.PdfToHtmlClient("demo", "demo");

                // Run the conversion and store the result in the `html` variable.
                byte[] html = client.convertFile("/path/to/logo.pdf");

                // Set HTTP response headers.
                Response.ContentType = "text/html";
                Response.Headers.Add("Cache-Control", "max-age=0");
                Response.Headers.Add("Accept-Ranges", "none");
                Response.Headers.Add("Content-Disposition", "attachment; filename*=UTF-8''" + Uri.EscapeUriString("logo.html"));

                // Send the result in the HTTP response.
                Response.OutputStream.Write(html, 0, html.Length);
                Response.Flush();
            }
            catch(pdfcrowd.Error why)
            {
                // Send the error in the HTTP response.
                Response.StatusCode = why.getStatusCode();
                Response.StatusDescription = why.ToString();
            }
        }
    }
}

PDF url to HTML in ASP.NET Web Forms

using System;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.Mvc;

namespace PdfcrowdDemo
{
    public partial class Default: System.Web.UI.Page
    {
        protected override void Render(HtmlTextWriter writer)
        {
            try
            {
                // Create an API client instance.
                pdfcrowd.PdfToHtmlClient client =
                    new pdfcrowd.PdfToHtmlClient("demo", "demo");

                // Run the conversion and store the result in the `html` variable.
                byte[] html = client.convertUrl("https://pdfcrowd.com/static/pdf/apisamples/invoice.pdf");

                // Set HTTP response headers.
                Response.ContentType = "text/html";
                Response.Headers.Add("Cache-Control", "max-age=0");
                Response.Headers.Add("Accept-Ranges", "none");
                Response.Headers.Add("Content-Disposition", "attachment; filename*=UTF-8''" + Uri.EscapeUriString("invoice.html"));

                // Send the result in the HTTP response.
                Response.OutputStream.Write(html, 0, html.Length);
                Response.Flush();
            }
            catch(pdfcrowd.Error why)
            {
                // Send the error in the HTTP response.
                Response.StatusCode = why.getStatusCode();
                Response.StatusDescription = why.ToString();
            }
        }
    }
}

In-memory PDF to HTML in ASP.NET Web Forms

using System;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.Mvc;

namespace PdfcrowdDemo
{
    public partial class Default: System.Web.UI.Page
    {
        protected override void Render(HtmlTextWriter writer)
        {
            try
            {
                // Create an API client instance.
                pdfcrowd.PdfToHtmlClient client =
                    new pdfcrowd.PdfToHtmlClient("demo", "demo");

                // Run the conversion and store the result in the `html` variable.
                byte[] html = client.convertRawData(File.ReadAllBytes("/path/to/hello_world.pdf"));

                // Set HTTP response headers.
                Response.ContentType = "text/html";
                Response.Headers.Add("Cache-Control", "max-age=0");
                Response.Headers.Add("Accept-Ranges", "none");
                Response.Headers.Add("Content-Disposition", "attachment; filename*=UTF-8''" + Uri.EscapeUriString("logo.html"));

                // Send the result in the HTTP response.
                Response.OutputStream.Write(html, 0, html.Length);
                Response.Flush();
            }
            catch(pdfcrowd.Error why)
            {
                // Send the error in the HTTP response.
                Response.StatusCode = why.getStatusCode();
                Response.StatusDescription = why.ToString();
            }
        }
    }
}