HTML to PDF API - .Net

Learn how to convert web pages and HTML documents to PDF in .Net using the Pdfcrowd API v2. The API is easy to use and the integration takes only a couple of lines of code.

Installation

Download pdfcrowd-4.4.1-dotnet.zip, unzip it and add a reference to pdfcrowd.dll to your project.

Learn more about other install options.

Authentication

Authentication is needed in order to use the Pdfcrowd API. The credentials used for accessing the API are your Pdfcrowd username and the API key.
Sign up for a Free Trial

Examples

using System;
using System.IO;

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

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "example.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // create output file for conversion result
            FileStream outputFile = new FileStream("example.pdf", FileMode.CreateNew);

            // run the conversion and store the result into a pdf variable
            byte[] pdf = client.convertUrl("http://www.example.com");

            // write the pdf into the output file
            outputFile.Write(pdf, 0, pdf.Length);

            // close the output file
            outputFile.Close();
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // create output stream for conversion result
            FileStream outputStream = new FileStream("example.pdf", FileMode.CreateNew);

            // run the conversion and write the result into the output stream
            client.convertUrlToStream("http://www.example.com", outputStream);

            // close the output stream
            outputStream.Close();
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // run the conversion and write the result to a file
            client.convertFileToFile("/path/to/MyLayout.html", "MyLayout.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // create output file for conversion result
            FileStream outputFile = new FileStream("MyLayout.pdf", FileMode.CreateNew);

            // run the conversion and store the result into a pdf variable
            byte[] pdf = client.convertFile("/path/to/MyLayout.html");

            // write the pdf into the output file
            outputFile.Write(pdf, 0, pdf.Length);

            // close the output file
            outputFile.Close();
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // create output stream for conversion result
            FileStream outputStream = new FileStream("MyLayout.pdf", FileMode.CreateNew);

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

            // close the output stream
            outputStream.Close();
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // run the conversion and write the result to a file
            client.convertStringToFile("<html><body><h1>Hello World!</h1></body></html>", "HelloWorld.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // create output file for conversion result
            FileStream outputFile = new FileStream("HelloWorld.pdf", FileMode.CreateNew);

            // run the conversion and store the result into a pdf variable
            byte[] pdf = client.convertString("<html><body><h1>Hello World!</h1></body></html>");

            // write the pdf into the output file
            outputFile.Write(pdf, 0, pdf.Length);

            // close the output file
            outputFile.Close();
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // create output stream for conversion result
            FileStream outputStream = new FileStream("HelloWorld.pdf", FileMode.CreateNew);

            // run the conversion and write the result into the output stream
            client.convertStringToStream("<html><body><h1>Hello World!</h1></body></html>", outputStream);

            // close the output stream
            outputStream.Close();
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

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

            // run the conversion and write the result to a file
            client.convertFileToFile("/path/to/MyLayout.html", "MyLayout.pdf");
            
            // print URL to the debug log
            System.Console.WriteLine("Debug log url: " + client.getDebugLogUrl());
            
            // print the number of available conversion credits in your account
            System.Console.WriteLine("Remaining credit count: " + client.getRemainingCreditCount());
            
            // print the number of credits consumed by the conversion
            System.Console.WriteLine("Consumed credit count: " + client.getConsumedCreditCount());
            
            // print the unique ID of the conversion
            System.Console.WriteLine("Job id: " + client.getJobId());
            
            // print the total number of pages in the output document
            System.Console.WriteLine("Page count: " + client.getPageCount());
            
            // print the size of the output in bytes
            System.Console.WriteLine("Output size: " + client.getOutputSize());
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}

Advanced Examples

using System;
using System.IO;

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

            // configure the conversion
            client.setPageSize("Letter");
            client.setOrientation("landscape");
            client.setNoMargins(true);

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "letter_landscape.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setHeaderHeight("15mm");
            client.setFooterHeight("10mm");
            client.setHeaderHtml("<a class='pdfcrowd-source-url' data-pdfcrowd-placement='href-and-content'></a>");
            client.setFooterHtml("<center><span class='pdfcrowd-page-number'></span></center>");
            client.setMarginTop("0mm");
            client.setMarginBottom("0mm");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "header_footer.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setScaleFactor(300);

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "zoom_300.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setAuthor("Pdfcrowd");
            client.setTitle("Hello");
            client.setSubject("Demo");
            client.setKeywords("Pdfcrowd,demo");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "with_metadata.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setPageLayout("single-page");
            client.setPageMode("full-screen");
            client.setInitialZoomType("fit-page");
            client.setOrientation("landscape");
            client.setNoMargins(true);

            // run the conversion and write the result to a file
            client.convertUrlToFile("https://pdfcrowd.com/doc/api/", "slide_show.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setElementToConvert("#main");

            // run the conversion and write the result to a file
            client.convertUrlToFile("https://pdfcrowd.com/doc/api/", "html_part.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setCustomJavascript("el=document.createElement('h2'); el.textContent='Hello from Pdfcrowd API'; el.style.color='red'; el_before=document.getElementsByTagName('h1')[0]; el_before.parentNode.insertBefore(el, el_before.nextSibling)");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "html_inject.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setCustomJavascript("libPdfcrowd.highlightHtml(false, true, true, false)");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "highlight_background.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}
using System;
using System.IO;

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

            // configure the conversion
            client.setCustomJavascript("libPdfcrowd.highlightHtml(true, false, true, true)");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "highlight_borders.pdf");
        }
        catch(pdfcrowd.Error why)
        {
            // report the error
            System.Console.Error.WriteLine("Pdfcrowd Error: " + why);

            // handle the exception here or rethrow and handle it at a higher level
            throw;
        }
    }
}

Check out the Github repository with examples of Pdfcrowd API integration into various web frameworks. For .Net see:

Tips & Tricks

The API lets you convert a web page, a local HTML file, or a string containing HTML. The result of the conversion can be stored to a local file, to a stream object or to a variable. See the conversion input section for more details.

The best way to start with the API is to choose one of the examples and once you get it working, you can:

You can also use these HTML related features:

  • You can use the following classes in your HTML code which hide/remove elements from the output:
    • pdfcrowd-remove - sets display:none!important on the element
    • pdfcrowd-hide - sets visibility:hidden!important on the element
  • You can switch to the print version of the page (if it exists) with setUsePrintMedia.
  • You can force a page break with
    <div style="page-break-before:always"></div>
  • You can avoid a page break inside an element with the following CSS
    img { page-break-inside:avoid }
  • You can use setCustomJavascript to alter the HTML contents with a custom JavaScript.

Error Handling

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

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

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

    // or handle the error in your way
}

Troubleshooting

  • Check API Status Codes in case of the error code is returned.
  • You can use setDebugLog and getDebugLogUrl to get detailed info about the conversion, such as conversion errors, time, console output.
  • You can use our JavaScript library to resolve rendering problems, such as missing content or blank pages.
    Just use setCustomJavascript with libPdfcrowd.highlightHtml(borders, backgrounds, labels, noZeroSpace) method call to visualize all HTML elements. See example.
  • Take a look at the FAQ section.

API Reference - class HtmlToPdfClient

Conversion from HTML to PDF. All setter methods return HtmlToPdfClient object unless otherwise specified.

Constructor

public HtmlToPdfClient(string userName, string apiKey)
Constructor for the Pdfcrowd API client.
Parameter Description Default
userName
Your username at Pdfcrowd.
apiKey
Your API key.

 

Conversion Input

public byte[] convertUrl(string url)
Convert a web page.
Parameter Description Default
url
The address of the web page to convert.
The supported protocols are http:// and https://.
Returns
  • byte[] - Byte array containing the conversion output.
public void convertUrlToStream(string url, Stream outStream)
Convert a web page and write the result to an output stream.
Parameter Description Default
url
The address of the web page to convert.
The supported protocols are http:// and https://.
outStream
The output stream that will contain the conversion output.
public void convertUrlToFile(string url, string filePath)
Convert a web page and write the result to a local file.
Parameter Description Default
url
The address of the web page to convert.
The supported protocols are http:// and https://.
filePath
The output file path.
The string must not be empty.
public byte[] convertFile(string file)
Convert a local file.
Parameter Description Default
file
The path to a local file to convert.
The file can be either a single file or an archive (.tar.gz, .tar.bz2, or .zip).
If the HTML document refers to local external assets (images, style sheets, javascript), zip the document together with the assets.
The file must exist and not be empty.
The file name must have a valid extension.
Returns
  • byte[] - Byte array containing the conversion output.
public void convertFileToStream(string file, Stream outStream)
Convert a local file and write the result to an output stream.
Parameter Description Default
file
The path to a local file to convert.
The file can be either a single file or an archive (.tar.gz, .tar.bz2, or .zip).
If the HTML document refers to local external assets (images, style sheets, javascript), zip the document together with the assets.
The file must exist and not be empty.
The file name must have a valid extension.
outStream
The output stream that will contain the conversion output.
public void convertFileToFile(string file, string filePath)
Convert a local file and write the result to a local file.
Parameter Description Default
file
The path to a local file to convert.
The file can be either a single file or an archive (.tar.gz, .tar.bz2, or .zip).
If the HTML document refers to local external assets (images, style sheets, javascript), zip the document together with the assets.
The file must exist and not be empty.
The file name must have a valid extension.
filePath
The output file path.
The string must not be empty.
public byte[] convertString(string text)
Convert a string.
Parameter Description Default
text
The string content to convert.
The string must not be empty.
Returns
  • byte[] - Byte array containing the conversion output.
public void convertStringToStream(string text, Stream outStream)
Convert a string and write the output to an output stream.
Parameter Description Default
text
The string content to convert.
The string must not be empty.
outStream
The output stream that will contain the conversion output.
public void convertStringToFile(string text, string filePath)
Convert a string and write the output to a file.
Parameter Description Default
text
The string content to convert.
The string must not be empty.
filePath
The output file path.
The string must not be empty.

 

Page setup

public HtmlToPdfClient setPageSize(string pageSize)
Set the output page size.
Parameter Description Default
pageSize
Allowed values:
  • A2
  • A3
  • A4
  • A5
  • A6
  • Letter
A4
public HtmlToPdfClient setPageWidth(string pageWidth)
Set the output page width. The safe maximum is 200in otherwise some PDF viewers may be unable to open the PDF.
Parameter Description Default
pageWidth
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
8.27in
Examples:
  • setPageWidth("300mm")
  • setPageWidth("9.5in")
public HtmlToPdfClient setPageHeight(string pageHeight)
Set the output page height. Use -1 for a single page PDF. The safe maximum is 200in otherwise some PDF viewers may be unable to open the PDF.
Parameter Description Default
pageHeight
Can be -1 or specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
11.7in
Examples:
  • setPageHeight("350mm")
  • setPageHeight("15.25in")
  • The height of the page is calculated automatically so that the whole document fits into it.
    setPageHeight("-1")
public HtmlToPdfClient setPageDimensions(string width, string height)
Set the output page dimensions.
Parameter Description Default
width
Set the output page width. The safe maximum is 200in otherwise some PDF viewers may be unable to open the PDF.
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
8.27in
height
Set the output page height. Use -1 for a single page PDF. The safe maximum is 200in otherwise some PDF viewers may be unable to open the PDF.
Can be -1 or specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
11.7in
Examples:
  • setPageDimensions("300mm", "350mm")
  • setPageDimensions("9.5in", "15.25in")
  • setPageDimensions("372mm", "520pt")
public HtmlToPdfClient setOrientation(string orientation)
Set the output page orientation.
Parameter Description Default
orientation
Allowed values:
  • landscape
  • portrait
portrait
public HtmlToPdfClient setMarginTop(string marginTop)
Set the output page top margin.
Parameter Description Default
marginTop
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
Examples:
  • setMarginTop("1in")
  • setMarginTop("2.5cm")
public HtmlToPdfClient setMarginRight(string marginRight)
Set the output page right margin.
Parameter Description Default
marginRight
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
Examples:
  • setMarginRight("1in")
  • setMarginRight("2.5cm")
public HtmlToPdfClient setMarginBottom(string marginBottom)
Set the output page bottom margin.
Parameter Description Default
marginBottom
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
Examples:
  • setMarginBottom("1in")
  • setMarginBottom("2.5cm")
public HtmlToPdfClient setMarginLeft(string marginLeft)
Set the output page left margin.
Parameter Description Default
marginLeft
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
Examples:
  • setMarginLeft("1in")
  • setMarginLeft("2.5cm")
public HtmlToPdfClient setNoMargins(bool noMargins)
Disable margins.
Parameter Description Default
noMargins
Set to true to disable margins.
false
public HtmlToPdfClient setPageMargins(string top, string right, string bottom, string left)
Set the output page margins.
Parameter Description Default
top
Set the output page top margin.
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
right
Set the output page right margin.
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
bottom
Set the output page bottom margin.
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
left
Set the output page left margin.
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.4in
public HtmlToPdfClient setHeaderUrl(string headerUrl)
Load an HTML code from the specified URL and use it as the page header. The following classes can be used in the HTML. The content of the respective elements will be expanded as follows:
  • pdfcrowd-page-count - the total page count of printed pages
  • pdfcrowd-page-number - the current page number
  • pdfcrowd-source-url - the source URL of a converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals
    • Arabic numerals are used by default.
    • Roman numerals can be generated by the roman and roman-lowercase values
    • Example: <span class='pdfcrowd-page-number' data-pdfcrowd-number-format='roman'></span>
  • data-pdfcrowd-placement - specifies where to place the source URL, allowed values:
    • The URL is inserted to the content
      • Example: <span class='pdfcrowd-source-url'></span>
        will produce <span>http://example.com</span>
    • href - the URL is set to the href attribute
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href'>Link to source</a>
        will produce <a href='http://example.com'>Link to source</a>
    • href-and-content - the URL is set to the href attribute and to the content
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href-and-content'></a>
        will produce <a href='http://example.com'>http://example.com</a>
Parameter Description Default
headerUrl
The supported protocols are http:// and https://.
Examples:
  • setHeaderUrl("http://myserver.com/header.html")
public HtmlToPdfClient setHeaderHtml(string headerHtml)
Use the specified HTML code as the page header. The following classes can be used in the HTML. The content of the respective elements will be expanded as follows:
  • pdfcrowd-page-count - the total page count of printed pages
  • pdfcrowd-page-number - the current page number
  • pdfcrowd-source-url - the source URL of a converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals
    • Arabic numerals are used by default.
    • Roman numerals can be generated by the roman and roman-lowercase values
    • Example: <span class='pdfcrowd-page-number' data-pdfcrowd-number-format='roman'></span>
  • data-pdfcrowd-placement - specifies where to place the source URL, allowed values:
    • The URL is inserted to the content
      • Example: <span class='pdfcrowd-source-url'></span>
        will produce <span>http://example.com</span>
    • href - the URL is set to the href attribute
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href'>Link to source</a>
        will produce <a href='http://example.com'>Link to source</a>
    • href-and-content - the URL is set to the href attribute and to the content
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href-and-content'></a>
        will produce <a href='http://example.com'>http://example.com</a>
Parameter Description Default
headerHtml
The string must not be empty.
Examples:
  • It displays the page number and the total page count.
    setHeaderHtml("Page <span class='pdfcrowd-page-number'></span> of <span class='pdfcrowd-page-count'></span> pages")
public HtmlToPdfClient setHeaderHeight(string headerHeight)
Set the header height.
Parameter Description Default
headerHeight
Can be specified in inches (in), millimeters (mm), centimeters (cm), or points (pt).
0.5in
Examples:
  • setHeaderHeight("30mm")
  • setHeaderHeight("1in")
Load an HTML code from the specified URL and use it as the page footer. The following classes can be used in the HTML. The content of the respective elements will be expanded as follows:
  • pdfcrowd-page-count - the total page count of printed pages
  • pdfcrowd-page-number - the current page number
  • pdfcrowd-source-url - the source URL of a converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals
    • Arabic numerals are used by default.
    • Roman numerals can be generated by the roman and roman-lowercase values
    • Example: <span class='pdfcrowd-page-number' data-pdfcrowd-number-format='roman'></span>
  • data-pdfcrowd-placement - specifies where to place the source URL, allowed values:
    • The URL is inserted to the content
      • Example: <span class='pdfcrowd-source-url'></span>
        will produce <span>http://example.com</span>
    • href - the URL is set to the href attribute
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href'>Link to source</a>
        will produce <a href='http://example.com'>Link to source</a>
    • href-and-content - the URL is set to the href attribute and to the content
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href-and-content'></a>
        will produce <a href='http://example.com'>http://example.com</a>
Parameter Description Default
Examples:
  • setFooterUrl("http://myserver.com/header.html")
Use the specified HTML as the page footer. The following classes can be used in the HTML. The content of the respective elements will be expanded as follows:
  • pdfcrowd-page-count - the total page count of printed pages
  • pdfcrowd-page-number - the current page number
  • pdfcrowd-source-url - the source URL of a converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals
    • Arabic numerals are used by default.
    • Roman numerals can be generated by the roman and roman-lowercase values
    • Example: <span class='pdfcrowd-page-number' data-pdfcrowd-number-format='roman'></span>
  • data-pdfcrowd-placement - specifies where to place the source URL, allowed values:
    • The URL is inserted to the content
      • Example: <span class='pdfcrowd-source-url'></span>
        will produce <span>http://example.com</span>
    • href - the URL is set to the href attribute
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href'>Link to source</a>
        will produce <a href='http://example.com'>Link to source</a>
    • href-and-content - the URL is set to the href attribute and to the content
      • Example: <a class='pdfcrowd-source-url' data-pdfcrowd-placement='href-and-content'></a>
        will produce <a href='http://example.com'>http://example.com</a>
Parameter Description Default
Examples:
  • It displays the page number and the total page count.
    setFooterHtml("Page <span class='pdfcrowd-page-number'></span> of <span class='pdfcrowd-page-count'></span> pages")
Set the footer height.
Parameter Description Default
Examples:
  • setFooterHeight("30mm")
  • setFooterHeight("1in")
public HtmlToPdfClient setPrintPageRange(string pages)
Set the page range to print.
Parameter Description Default
pages
A comma seperated list of page numbers or ranges.
Examples:
  • Just the second page is printed.
    setPrintPageRange("2")
  • The first and the third page are printed.
    setPrintPageRange("1,3")
  • Everything except the first page is printed.
    setPrintPageRange("2-")
  • Just first 3 pages are printed.
    setPrintPageRange("-3")
  • Pages 3, 6, 7, 8 and 9 are printed.
    setPrintPageRange("3,6-9")
public HtmlToPdfClient setPageBackgroundColor(string pageBackgroundColor)
The page background color in RGB or RGBA hexadecimal format. The color fills the entire page regardless of the margins.
Parameter Description Default
pageBackgroundColor
The value must be in RRGGBB or RRGGBBAA hexadecimal format.
Examples:
  • red color
    setPageBackgroundColor("FF0000")
  • green color
    setPageBackgroundColor("00ff00")
  • green color with 50% opacity
    setPageBackgroundColor("00ff0080")
public HtmlToPdfClient setPageWatermark(string pageWatermark)
Apply the first page of the watermark PDF to every page of the output PDF.
Parameter Description Default
pageWatermark
The file path to a local watermark PDF file.
The file must exist and not be empty.
public HtmlToPdfClient setMultipageWatermark(string multipageWatermark)
Apply each page of the specified watermark PDF to the corresponding page of the output PDF.
Parameter Description Default
multipageWatermark
The file path to a local watermark PDF file.
The file must exist and not be empty.
public HtmlToPdfClient setPageBackground(string pageBackground)
Apply the first page of the specified PDF to the background of every page of the output PDF.
Parameter Description Default
pageBackground
The file path to a local background PDF file.
The file must exist and not be empty.
public HtmlToPdfClient setMultipageBackground(string multipageBackground)
Apply each page of the specified PDF to the background of the corresponding page of the output PDF.
Parameter Description Default
multipageBackground
The file path to a local background PDF file.
The file must exist and not be empty.
public HtmlToPdfClient setExcludeHeaderOnPages(string pages)
The page header is not printed on the specified pages.
Parameter Description Default
pages
List of physical page numbers. Negative numbers count backwards from the last page: -1 is the last page, -2 is the last but one page, and so on.
A comma seperated list of page numbers.
Examples:
  • The header is not printed on the second page.
    setExcludeHeaderOnPages("2")
  • The header is not printed on the first and the last page.
    setExcludeHeaderOnPages("1,-1")
The page footer is not printed on the specified pages.
Parameter Description Default
Examples:
  • The footer is not printed on the second page.
    setExcludeFooterOnPages("2")
  • The footer is not printed on the first and the last page.
    setExcludeFooterOnPages("1,-1")
public HtmlToPdfClient setPageNumberingOffset(int offset)
Set an offset between physical and logical page numbers.
Parameter Description Default
offset
Integer specifying page offset.
0
Examples:
  • The page numbering will start with 0. Set exclude_header_on_pages to "1" and the page numbering will start on the second page with 1.
    setPageNumberingOffset(1)
  • The page numbering will start with 11 on the first page. It can be useful for joining documents.
    setPageNumberingOffset(-10)

 

General Options

public HtmlToPdfClient setNoBackground(bool noBackground)
Do not print the background graphics.
Parameter Description Default
noBackground
Set to true to disable the background graphics.
false
public HtmlToPdfClient setDisableJavascript(bool disableJavascript)
Do not execute JavaScript.
Parameter Description Default
disableJavascript
Set to true to disable JavaScript in web pages.
false
public HtmlToPdfClient setDisableImageLoading(bool disableImageLoading)
Do not load images.
Parameter Description Default
disableImageLoading
Set to true to disable loading of images.
false
public HtmlToPdfClient setDisableRemoteFonts(bool disableRemoteFonts)
Disable loading fonts from remote sources.
Parameter Description Default
disableRemoteFonts
Set to true disable loading remote fonts.
false
public HtmlToPdfClient setBlockAds(bool blockAds)
Try to block ads. Enabling this option can produce smaller output and speed up the conversion.
Parameter Description Default
blockAds
Set to true to block ads in web pages.
false
public HtmlToPdfClient setDefaultEncoding(string defaultEncoding)
Set the default HTML content text encoding.
Parameter Description Default
defaultEncoding
The text encoding of the HTML content.
auto detect
public HtmlToPdfClient setHttpAuth(string userName, string password)
Set credentials to access HTTP base authentication protected websites.
Parameter Description Default
userName
Set the HTTP authentication user name.
password
Set the HTTP authentication password.
public HtmlToPdfClient setUsePrintMedia(bool usePrintMedia)
Use the print version of the page if available (@media print).
Parameter Description Default
usePrintMedia
Set to true to use the print version of the page.
false
public HtmlToPdfClient setNoXpdfcrowdHeader(bool noXpdfcrowdHeader)
Do not send the X-Pdfcrowd HTTP header in Pdfcrowd HTTP requests.
Parameter Description Default
noXpdfcrowdHeader
Set to true to disable sending X-Pdfcrowd HTTP header.
false
public HtmlToPdfClient setCookies(string cookies)
Set cookies that are sent in Pdfcrowd HTTP requests.
Parameter Description Default
cookies
The cookie string.
Examples:
  • setCookies("session=6d7184b3bf35;token=2710")
public HtmlToPdfClient setVerifySslCertificates(bool verifySslCertificates)
Do not allow insecure HTTPS connections.
Parameter Description Default
verifySslCertificates
Set to true to enable SSL certificate verification.
false
public HtmlToPdfClient setFailOnMainUrlError(bool failOnError)
Abort the conversion if the main URL HTTP status code is greater than or equal to 400.
Parameter Description Default
failOnError
Set to true to abort the conversion.
false
public HtmlToPdfClient setFailOnAnyUrlError(bool failOnError)
Abort the conversion if any of the sub-request HTTP status code is greater than or equal to 400 or if some sub-requests are still pending. See details in a debug log.
Parameter Description Default
failOnError
Set to true to abort the conversion.
false
public HtmlToPdfClient setCustomJavascript(string customJavascript)
Run a custom JavaScript after the document is loaded. The script is intended for post-load DOM manipulation (add/remove elements, update CSS, ...).
Parameter Description Default
customJavascript
String containing a JavaScript code.
The string must not be empty.
public HtmlToPdfClient setCustomHttpHeader(string customHttpHeader)
Set a custom HTTP header that is sent in Pdfcrowd HTTP requests.
Parameter Description Default
customHttpHeader
A string containing the header name and value separated by a colon.
Examples:
  • setCustomHttpHeader("X-My-Client-ID:k2017-12345")
public HtmlToPdfClient setJavascriptDelay(int javascriptDelay)
Wait the specified number of milliseconds to finish all JavaScript after the document is loaded. The maximum value is determined by your API license.
Parameter Description Default
javascriptDelay
The number of milliseconds to wait.
Must be a positive integer number or 0.
200
public HtmlToPdfClient setElementToConvert(string selectors)
Convert only the specified element from the main document and its children. The element is specified by one or more CSS selectors. If the element is not found, the conversion fails. If multiple elements are found, the first one is used.
Parameter Description Default
selectors
One or more CSS selectors separated by commas.
The string must not be empty.
Examples:
  • The first element with the id main-content is converted.
    setElementToConvert("#main-content")
  • The first element with the class name main-content is converted.
    setElementToConvert(".main-content")
  • The first element with the tag name table is converted.
    setElementToConvert("table")
  • The first element with the tag name table or with the id main-content is converted.
    setElementToConvert("table, #main-content")
  • The first element <p class="article"> within <div class="user-panel main"> is converted.
    setElementToConvert("div.user-panel.main p.article")
public HtmlToPdfClient setElementToConvertMode(string mode)
Specify the DOM handling when only a part of the document is converted.
Parameter Description Default
mode
Allowed values:
  • cut-out
    The element and its children are cut out of the document.
  • remove-siblings
    All element's siblings are removed.
  • hide-siblings
    All element's sibilings are hidden.
cut-out
public HtmlToPdfClient setWaitForElement(string selectors)
Wait for the specified element in a source document. The element is specified by one or more CSS selectors. The element is searched for in the main document and all iframes. If the element is not found, the conversion fails. Your API license defines the maximum wait time by "Max Delay" parameter.
Parameter Description Default
selectors
One or more CSS selectors separated by commas.
The string must not be empty.
Examples:
  • Wait until an element with the id main-content is found.
    setWaitForElement("#main-content")
  • Wait until an element with the class name main-content is found.
    setWaitForElement(".main-content")
  • Wait until an element with the tag name table is found.
    setWaitForElement("table")
  • Wait until an element with the tag name table or with the id main-content is found.
    setWaitForElement("table, #main-content")
  • Wait until <p class="article"> is found within <div class="user-panel main">.
    setWaitForElement("div.user-panel.main p.article")

 

public HtmlToPdfClient setViewport(int width, int height)
Set the viewport size. The viewport is the user's visible area of the page.
Parameter Description Default
width
Set the viewport width in pixels. The viewport is the user's visible area of the page.
The value must be in a range 96-7680.
1024
height
Set the viewport height in pixels. The viewport is the user's visible area of the page.
Must be a positive integer number.
768
public HtmlToPdfClient setRenderingMode(string renderingMode)
Sets the rendering mode.
Parameter Description Default
renderingMode
The rendering mode.
Allowed values:
  • default
    This mode is compatible with the Chrome preview.
  • viewport
    Takes the viewport width into account.
default
public HtmlToPdfClient setScaleFactor(int scaleFactor)
Set the scaling factor (zoom) for the main page area.
Parameter Description Default
scaleFactor
The scale factor.
The value must be in a range 10-500.
100
Set the scaling factor (zoom) for the header and footer.
Parameter Description Default
public HtmlToPdfClient setDisableSmartShrinking(bool disableSmartShrinking)
Disable the intelligent shrinking strategy that tries to optimally fit the HTML contents to a PDF page.
Parameter Description Default
disableSmartShrinking
Set to true to disable the intelligent shrinking strategy.
false

 

PDF Format

Miscellaneous values for PDF output.

public HtmlToPdfClient setLinearize(bool linearize)
Create linearized PDF. This is also known as Fast Web View.
Parameter Description Default
linearize
Set to true to create linearized PDF.
false
public HtmlToPdfClient setEncrypt(bool encrypt)
Encrypt the PDF. This prevents search engines from indexing the contents.
Parameter Description Default
encrypt
Set to true to enable PDF encryption.
false
public HtmlToPdfClient setUserPassword(string userPassword)
Protect the PDF with a user password. When a PDF has a user password, it must be supplied in order to view the document and to perform operations allowed by the access permissions.
Parameter Description Default
userPassword
The user password.
public HtmlToPdfClient setOwnerPassword(string ownerPassword)
Protect the PDF with an owner password. Supplying an owner password grants unlimited access to the PDF including changing the passwords and access permissions.
Parameter Description Default
ownerPassword
The owner password.
public HtmlToPdfClient setNoPrint(bool noPrint)
Disallow printing of the output PDF.
Parameter Description Default
noPrint
Set to true to set the no-print flag in the output PDF.
false
public HtmlToPdfClient setNoModify(bool noModify)
Disallow modification of the ouput PDF.
Parameter Description Default
noModify
Set to true to set the read-only only flag in the output PDF.
false
public HtmlToPdfClient setNoCopy(bool noCopy)
Disallow text and graphics extraction from the output PDF.
Parameter Description Default
noCopy
Set to true to set the no-copy flag in the output PDF.
false
public HtmlToPdfClient setTitle(string title)
Set the title of the PDF.
Parameter Description Default
title
The title.
public HtmlToPdfClient setSubject(string subject)
Set the subject of the PDF.
Parameter Description Default
subject
The subject.
public HtmlToPdfClient setAuthor(string author)
Set the author of the PDF.
Parameter Description Default
author
The author.
public HtmlToPdfClient setKeywords(string keywords)
Associate keywords with the document.
Parameter Description Default
keywords
The string with the keywords.

 

Viewer Preferences

These preferences specify how a PDF viewer should present the document. The preferences may be ignored by some PDF viewers.

public HtmlToPdfClient setPageLayout(string pageLayout)
Specify the page layout to be used when the document is opened.
Parameter Description Default
pageLayout
Allowed values:
  • single-page
    Display one page at a time.
  • one-column
    Display the pages in one column.
  • two-column-left
    Display the pages in two columns, with odd-numbered pages on the left.
  • two-column-right
    Display the pages in two columns, with odd-numbered pages on the right.
public HtmlToPdfClient setPageMode(string pageMode)
Specify how the document should be displayed when opened.
Parameter Description Default
pageMode
Allowed values:
  • full-screen
    Full-screen mode.
  • thumbnails
    Thumbnail images are visible.
  • outlines
    Document outline is visible.
public HtmlToPdfClient setInitialZoomType(string initialZoomType)
Specify how the page should be displayed when opened.
Parameter Description Default
initialZoomType
Allowed values:
  • fit-width
    The page content is magnified just enough to fit the entire width of the page within the window.
  • fit-height
    The page content is magnified just enough to fit the entire height of the page within the window.
  • fit-page
    The page content is magnified just enough to fit the entire page within the window both horizontally and vertically. If the required horizontal and vertical magnification factors are different, use the smaller of the two, centering the page within the window in the other dimension.
public HtmlToPdfClient setInitialPage(int initialPage)
Display the specified page when the document is opened.
Parameter Description Default
initialPage
Must be a positive integer number.
public HtmlToPdfClient setInitialZoom(int initialZoom)
Specify the initial page zoom in percents when the document is opened.
Parameter Description Default
initialZoom
Must be a positive integer number.
public HtmlToPdfClient setHideToolbar(bool hideToolbar)
Specify whether to hide the viewer application's tool bars when the document is active.
Parameter Description Default
hideToolbar
Set to true to hide tool bars.
false
public HtmlToPdfClient setHideMenubar(bool hideMenubar)
Specify whether to hide the viewer application's menu bar when the document is active.
Parameter Description Default
hideMenubar
Set to true to hide the menu bar.
false
public HtmlToPdfClient setHideWindowUi(bool hideWindowUi)
Specify whether to hide user interface elements in the document's window (such as scroll bars and navigation controls), leaving only the document's contents displayed.
Parameter Description Default
hideWindowUi
Set to true to hide ui elements.
false
public HtmlToPdfClient setFitWindow(bool fitWindow)
Specify whether to resize the document's window to fit the size of the first displayed page.
Parameter Description Default
fitWindow
Set to true to resize the window.
false
public HtmlToPdfClient setCenterWindow(bool centerWindow)
Specify whether to position the document's window in the center of the screen.
Parameter Description Default
centerWindow
Set to true to center the window.
false
public HtmlToPdfClient setDisplayTitle(bool displayTitle)
Specify whether the window's title bar should display the document title. If false , the title bar should instead display the name of the PDF file containing the document.
Parameter Description Default
displayTitle
Set to true to display the title.
false
public HtmlToPdfClient setRightToLeft(bool rightToLeft)
Set the predominant reading order for text to right-to-left. This option has no direct effect on the document's contents or page numbering but can be used to determine the relative positioning of pages when displayed side by side or printed n-up
Parameter Description Default
rightToLeft
Set to true to set right-to-left reading order.
false

 

Miscellaneous

public HtmlToPdfClient setDebugLog(bool debugLog)
Turn on the debug logging. Details about the conversion are stored in the debug log. The URL of the log can be obtained from the getDebugLogUrl method or available in conversion statistics.
Parameter Description Default
debugLog
Set to true to enable the debug logging.
false
public string getDebugLogUrl()
Get the URL of the debug log for the last conversion.
Returns
  • string - The link to the debug log.
public int getRemainingCreditCount()
Get the number of conversion credits available in your account.
The returned value can differ from the actual count if you run parallel conversions.
The special value 999999 is returned if the information is not available.
Returns
  • int - The number of credits.
public int getConsumedCreditCount()
Get the number of credits consumed by the last conversion.
Returns
  • int - The number of credits.
public string getJobId()
Get the job id.
Returns
  • string - The unique job identifier.
public int getPageCount()
Get the total number of pages in the output document.
Returns
  • int - The page count.
public int getOutputSize()
Get the size of the output in bytes.
Returns
  • int - The count of bytes.
public HtmlToPdfClient setTag(string tag)
Tag the conversion with a custom value. The tag is used in conversion statistics. A value longer than 32 characters is cut off.
Parameter Description Default
tag
A string with the custom tag.
public HtmlToPdfClient setHttpProxy(string httpProxy)
A proxy server used by Pdfcrowd conversion process for accessing the source URLs with HTTP scheme. It can help to circumvent regional restrictions or provide limited access to your intranet.
Parameter Description Default
httpProxy
The value must have format DOMAIN_OR_IP_ADDRESS:PORT.
Examples:
  • setHttpProxy("myproxy.com:8080")
  • setHttpProxy("113.25.84.10:33333")
public HtmlToPdfClient setHttpsProxy(string httpsProxy)
A proxy server used by Pdfcrowd conversion process for accessing the source URLs with HTTPS scheme. It can help to circumvent regional restrictions or provide limited access to your intranet.
Parameter Description Default
httpsProxy
The value must have format DOMAIN_OR_IP_ADDRESS:PORT.
Examples:
  • setHttpsProxy("myproxy.com:443")
  • setHttpsProxy("113.25.84.10:44333")
public HtmlToPdfClient setClientCertificate(string clientCertificate)
A client certificate to authenticate Pdfcrowd converter on your web server. The certificate is used for two-way SSL/TLS authentication and adds extra security.
Parameter Description Default
clientCertificate
The file must be in PKCS12 format.
The file must exist and not be empty.
public HtmlToPdfClient setClientCertificatePassword(string clientCertificatePassword)
A password for PKCS12 file with a client certificate if it's needed.
Parameter Description Default
clientCertificatePassword

 

API Client Options

public HtmlToPdfClient setUseHttp(bool useHttp)
Specifies if the client communicates over HTTP or HTTPS with Pdfcrowd API.
Parameter Description Default
useHttp
Set to true to use HTTP.
false
public HtmlToPdfClient setUserAgent(string userAgent)
Set a custom user agent HTTP header. It can be usefull if you are behind some proxy or firewall.
Parameter Description Default
userAgent
The user agent string.
pdfcrowd_dotnet_client/4.4.1 (http://pdfcrowd.com)
public HtmlToPdfClient setProxy(string host, int port, string userName, string password)
Specifies an HTTP proxy that the API client library will use to connect to the internet.
Parameter Description Default
host
The proxy hostname.
port
The proxy port.
userName
The username.
password
The password.
public HtmlToPdfClient setRetryCount(int retryCount)
Specifies the number of retries when the 502 HTTP status code is received. The 502 status code indicates a temporary network issue. This feature can be disabled by setting to 0.
Parameter Description Default
retryCount
Number of retries wanted.
1