HTML to PDF / .NET Reference

class HtmlToPdfClient

All setter methods return HtmlToPdfClient object unless specified otherwise.

Constructor

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

Conversion Input

public byte[] convertUrl(string url)
Convert a web page.
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.
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.
url
The address of the web page to convert.
The supported protocols are http:// and https://.
filePath
The output file path. 
public byte[] convertFile(string file)
Convert a local file.
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.
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.
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. 
public byte[] convertString(string text)
Convert a string.
text
The string content to convert.
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.
text
The string content to convert.
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.
text
The string content to convert.
filePath
The output file path. 
public byte[] convertStream(Stream inStream)
Convert the contents of an input stream.
inStream
The input stream with source data.
The stream can contain either HTML code or an archive (.zip, .tar.gz, .tar.bz2).
The archive can contain HTML code and its external assets (images, style sheets, javascript).
Returns
  • byte[] - Byte array containing the conversion output. 
public void convertStreamToStream(Stream inStream, Stream outStream)
Convert the contents of an input stream and write the result to an output stream.
inStream
The input stream with source data.
The stream can contain either HTML code or an archive (.zip, .tar.gz, .tar.bz2).
The archive can contain HTML code and its external assets (images, style sheets, javascript).
outStream
The output stream that will contain the conversion output. 
public void convertStreamToFile(Stream inStream, string filePath)
Convert the contents of an input stream and write the result to a local file.
inStream
The input stream with source data.
The stream can contain either HTML code or an archive (.zip, .tar.gz, .tar.bz2).
The archive can contain HTML code and its external assets (images, style sheets, javascript).
filePath
The output file path. 
public HtmlToPdfClient setZipMainFilename(string filename)
Set the file name of the main HTML document stored in the input archive. If not specified, the first HTML file in the archive is used for conversion. Use this method if the input archive contains multiple HTML documents.
filename
The file name.

Page Setup

public HtmlToPdfClient setPageSize(string size)
Set the output page size.
size
Allowed values:
  • A0
  • A1
  • A2
  • A3
  • A4
  • A5
  • A6
  • Letter
Default: A4 
public HtmlToPdfClient setPageWidth(string width)
Set the output page width. The safe maximum is 200in otherwise some PDF viewers may be unable to open the PDF.
width
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 8.27in
Examples:
  • setPageWidth("300mm")
  • setPageWidth("9.5in") 
public HtmlToPdfClient setPageHeight(string 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.
height
The value must be -1 or specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 11.7in
Examples:
  • setPageHeight("15.25in")
  • The height of the page is calculated automatically so that the whole document fits into it.
    setPageHeight("-1")
  • setPageHeight("350mm") 
public HtmlToPdfClient setPageDimensions(string width, string height)
Set the output page dimensions.
width
Set the output page width. The safe maximum is 200in otherwise some PDF viewers may be unable to open the PDF.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 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.
The value must be -1 or specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 11.7in
Examples:
  • setPageDimensions("300mm", "350mm")
  • setPageDimensions("9.5in", "15.25in")
  • setPageDimensions("372mm", "520pt") 
public HtmlToPdfClient setOrientation(string orientation)
Set the output page orientation.
orientation
Allowed values:
  • landscape
  • portrait
Default: portrait 
public HtmlToPdfClient setMarginTop(string top)
Set the output page top margin.
top
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
Examples:
  • setMarginTop("1in")
  • setMarginTop("2.5cm") 
public HtmlToPdfClient setMarginRight(string right)
Set the output page right margin.
right
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
Examples:
  • setMarginRight("1in")
  • setMarginRight("2.5cm") 
public HtmlToPdfClient setMarginBottom(string bottom)
Set the output page bottom margin.
bottom
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
Examples:
  • setMarginBottom("1in")
  • setMarginBottom("2.5cm") 
public HtmlToPdfClient setMarginLeft(string left)
Set the output page left margin.
left
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
Examples:
  • setMarginLeft("1in")
  • setMarginLeft("2.5cm") 
public HtmlToPdfClient setNoMargins(bool value)
Disable page margins.
value
Set to true to disable margins.
Default: false 
public HtmlToPdfClient setPageMargins(string top, string right, string bottom, string left)
Set the output page margins.
top
Set the output page top margin.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
right
Set the output page right margin.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
bottom
Set the output page bottom margin.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in
left
Set the output page left margin.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.4in 
public HtmlToPdfClient setPrintPageRange(string pages)
Set the page range to print.
pages
A comma separated list of page numbers or ranges. Special strings may be used, such as `odd`, `even` and `last`.
Examples:
  • Just the second page is printed.
    setPrintPageRange("2")
  • The first, third, and last pages are printed.
    setPrintPageRange("1,3,last")
  • 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 setContentViewportWidth(string width)
Set the viewport width for formatting the HTML content when generating a PDF. By specifying a viewport width, you can control how the content is rendered, ensuring it mimics the appearance on various devices or matches specific design requirements.
Availability: API client >= 6.0.0, converter >= 24.04. See versioning.
width
The width of the viewport.
The value must be "balanced", "small", "medium", "large", "extra-large", or a number in the range 96-65000px.
Allowed values:
  • balanced
    The smart option to adjust the viewport width dynamically to fit the print area, ensuring an optimal layout.
  • small
    A compact layout where less text fits on each PDF page, ideal for detailed sections or mobile views.
  • medium
    A balanced amount of text per page, striking a good compromise between readability and content density.
  • large
    A broader layout that accommodates more text per page, perfect for reducing page count and enhancing flow.
  • extra-large
    Maximize the text per page, creating a spacious and content-rich PDF, akin to a widescreen experience.
  • A precise viewport width in pixels, such as 1024px, to tailor the PDF's text density to your specific requirements. The value must be in the range 96-65000px.
Default: medium
Examples:
  • Use the "large" viewport.
    setContentViewportWidth("large")
  • Use an 800 pixels wide viewport.
    setContentViewportWidth("800px") 
public HtmlToPdfClient setContentViewportHeight(string height)
Set the viewport height for formatting the HTML content when generating a PDF. By specifying a viewport height, you can enforce loading of lazy-loaded images and also affect vertical positioning of absolutely positioned elements within the content.
Availability: API client >= 6.0.0, converter >= 24.04. See versioning.
height
The viewport height.
The value must be "auto", "large", or a number.
Allowed values:
  • auto
    The height of the print area is used.
  • large
    Value suitable for documents with extensive lazy-loaded content.
  • A specific numerical value, such as 10000px, to set as the window height, allowing precise control based on the document's requirements.
Default: auto
Examples:
  • setContentViewportHeight("large")
  • setContentViewportHeight("5000px") 
public HtmlToPdfClient setContentFitMode(string mode)
Specifies the mode for fitting the HTML content to the print area by upscaling or downscaling it.
Availability: API client >= 6.0.0, converter >= 24.04. See versioning.
mode
The fitting mode.
Allowed values:
  • auto
    Automatic mode
  • smart-scaling
    Smartscaling to fit more content into the print area.
  • no-scaling
    No scaling is performed.
  • viewport-width
    The viewport width fits the print area width.
  • content-width
    The HTML content width fits the print area width.
  • single-page
    The entire HTML content fits the print area of a single page.
  • single-page-ratio
    The entire HTML content fits the print area of a single page, maintaining the aspect ratio of the page height and width.
Default: auto 
public HtmlToPdfClient setRemoveBlankPages(string pages)
Specifies which blank pages to exclude from the output document.
Availability: API client >= 5.13.0, converter >= 20.10. See versioning.
pages
The empty page behavior.
Allowed values:
  • trailing
    Trailing blank pages are removed from the document.
  • all
    All empty pages are removed from the document.
    Availability: API client >= 6.0.0, converter >= 24.04.
  • none
    No blank page is removed from the document.
Default: trailing 
public HtmlToPdfClient setHeaderUrl(string url)
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 the converted document
  • pdfcrowd-source-title - the title of the converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals. Allowed values:
    • arabic - Arabic numerals, they are used by default
    • roman - Roman numerals
    • eastern-arabic - Eastern Arabic numerals
    • bengali - Bengali numerals
    • devanagari - Devanagari numerals
    • thai - Thai numerals
    • east-asia - Chinese, Vietnamese, Japanese and Korean numerals
    • chinese-formal - Chinese formal numerals
    Please contact us if you need another type of numerals.
    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>
url
The supported protocols are http:// and https://.
Example:
  • setHeaderUrl("http://myserver.com/header.html") 
public HtmlToPdfClient setHeaderHtml(string html)
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 the converted document
  • pdfcrowd-source-title - the title of the converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals. Allowed values:
    • arabic - Arabic numerals, they are used by default
    • roman - Roman numerals
    • eastern-arabic - Eastern Arabic numerals
    • bengali - Bengali numerals
    • devanagari - Devanagari numerals
    • thai - Thai numerals
    • east-asia - Chinese, Vietnamese, Japanese and Korean numerals
    • chinese-formal - Chinese formal numerals
    Please contact us if you need another type of numerals.
    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>
html
Example:
  • 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 height)
Set the header height.
height
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: 0.5in
Examples:
  • setHeaderHeight("30mm")
  • setHeaderHeight("1in") 
public HtmlToPdfClient setZipHeaderFilename(string filename)
Set the file name of the header HTML document stored in the input archive. Use this method if the input archive contains multiple HTML documents.
filename
The file name.
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 the converted document
  • pdfcrowd-source-title - the title of the converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals. Allowed values:
    • arabic - Arabic numerals, they are used by default
    • roman - Roman numerals
    • eastern-arabic - Eastern Arabic numerals
    • bengali - Bengali numerals
    • devanagari - Devanagari numerals
    • thai - Thai numerals
    • east-asia - Chinese, Vietnamese, Japanese and Korean numerals
    • chinese-formal - Chinese formal numerals
    Please contact us if you need another type of numerals.
    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>
Example:
  • 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 the converted document
  • pdfcrowd-source-title - the title of the converted document
The following attributes can be used:
  • data-pdfcrowd-number-format - specifies the type of the used numerals. Allowed values:
    • arabic - Arabic numerals, they are used by default
    • roman - Roman numerals
    • eastern-arabic - Eastern Arabic numerals
    • bengali - Bengali numerals
    • devanagari - Devanagari numerals
    • thai - Thai numerals
    • east-asia - Chinese, Vietnamese, Japanese and Korean numerals
    • chinese-formal - Chinese formal numerals
    Please contact us if you need another type of numerals.
    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>
Example:
  • 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.
Examples:
  • setFooterHeight("30mm")
  • setFooterHeight("1in")
Set the file name of the footer HTML document stored in the input archive. Use this method if the input archive contains multiple HTML documents.
Disable horizontal page margins for header and footer. The header/footer contents width will be equal to the physical page width.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning. 
public HtmlToPdfClient setExcludeHeaderOnPages(string pages)
The page header content is not printed on the specified pages. To remove the entire header area, use the conversion config.
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 separated 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 content is not printed on the specified pages. To remove the entire footer area, use the conversion config.
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")
Set the scaling factor (zoom) for the header and footer.
Example:
  • setHeaderFooterScaleFactor(50) 
public HtmlToPdfClient setPageNumberingOffset(int offset)
Set an offset between physical and logical page numbers.
offset
Integer specifying page offset.
Default: 0
Examples:
  • The page numbering will start with 0.
    setPageNumberingOffset(1)
  • The page numbering will start with 11 on the first page. It can be useful for joining documents.
    setPageNumberingOffset(-10)

Watermark & Background

public HtmlToPdfClient setPageWatermark(string watermark)
Apply a watermark to each page of the output PDF file. A watermark can be either a PDF or an image. If a multi-page file (PDF or TIFF) is used, the first page is used as the watermark.
watermark
The file path to a local file.
The file must exist and not be empty.
Examples:
  • setPageWatermark("/home/user/john/watermark.pdf")
  • setPageWatermark("/home/user/john/watermark.png") 
public HtmlToPdfClient setPageWatermarkUrl(string url)
Load a file from the specified URL and apply the file as a watermark to each page of the output PDF. A watermark can be either a PDF or an image. If a multi-page file (PDF or TIFF) is used, the first page is used as the watermark.
url
The supported protocols are http:// and https://.
Examples:
  • setPageWatermarkUrl("http://myserver.com/watermark.pdf")
  • setPageWatermarkUrl("http://myserver.com/watermark.png") 
public HtmlToPdfClient setMultipageWatermark(string watermark)
Apply each page of a watermark to the corresponding page of the output PDF. A watermark can be either a PDF or an image.
watermark
The file path to a local file.
The file must exist and not be empty.
Examples:
  • setMultipageWatermark("/home/user/john/watermark.pdf")
  • setMultipageWatermark("/home/user/john/watermark.png") 
public HtmlToPdfClient setMultipageWatermarkUrl(string url)
Load a file from the specified URL and apply each page of the file as a watermark to the corresponding page of the output PDF. A watermark can be either a PDF or an image.
url
The supported protocols are http:// and https://.
Examples:
  • setMultipageWatermarkUrl("http://myserver.com/watermark.pdf")
  • setMultipageWatermarkUrl("http://myserver.com/watermark.png") 
public HtmlToPdfClient setPageBackground(string background)
Apply a background to each page of the output PDF file. A background can be either a PDF or an image. If a multi-page file (PDF or TIFF) is used, the first page is used as the background.
background
The file path to a local file.
The file must exist and not be empty.
Examples:
  • setPageBackground("/home/user/john/background.pdf")
  • setPageBackground("/home/user/john/background.png") 
public HtmlToPdfClient setPageBackgroundUrl(string url)
Load a file from the specified URL and apply the file as a background to each page of the output PDF. A background can be either a PDF or an image. If a multi-page file (PDF or TIFF) is used, the first page is used as the background.
url
The supported protocols are http:// and https://.
Examples:
  • setPageBackgroundUrl("http://myserver.com/background.pdf")
  • setPageBackgroundUrl("http://myserver.com/background.png") 
public HtmlToPdfClient setMultipageBackground(string background)
Apply each page of a background to the corresponding page of the output PDF. A background can be either a PDF or an image.
background
The file path to a local file.
The file must exist and not be empty.
Examples:
  • setMultipageBackground("/home/user/john/background.pdf")
  • setMultipageBackground("/home/user/john/background.png") 
public HtmlToPdfClient setMultipageBackgroundUrl(string url)
Load a file from the specified URL and apply each page of the file as a background to the corresponding page of the output PDF. A background can be either a PDF or an image.
url
The supported protocols are http:// and https://.
Examples:
  • setMultipageBackgroundUrl("http://myserver.com/background.pdf")
  • setMultipageBackgroundUrl("http://myserver.com/background.png") 
public HtmlToPdfClient setPageBackgroundColor(string color)
The page background color in RGB or RGBA hexadecimal format. The color fills the entire page regardless of the margins.
color
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")

General Options

public HtmlToPdfClient setUsePrintMedia(bool value)
Use the print version of the page if available (@media print).
value
Set to true to use the print version of the page.
Default: false 
public HtmlToPdfClient setNoBackground(bool value)
Do not print the background graphics.
value
Set to true to disable the background graphics.
Default: false 
public HtmlToPdfClient setDisableJavascript(bool value)
Do not execute JavaScript.
value
Set to true to disable JavaScript in web pages.
Default: false 
public HtmlToPdfClient setDisableImageLoading(bool value)
Do not load images.
value
Set to true to disable loading of images.
Default: false 
public HtmlToPdfClient setDisableRemoteFonts(bool value)
Disable loading fonts from remote sources.
value
Set to true disable loading remote fonts.
Default: false 
public HtmlToPdfClient setUseMobileUserAgent(bool value)
Deprecated Replaced with: setConverterUserAgent()
Use a mobile user agent.
Availability: API client >= 5.3.0, converter >= 20.10. See versioning.
value
Set to true to use a mobile user agent.
Default: false 
public HtmlToPdfClient setLoadIframes(string iframes)
Specifies how iframes are handled.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
iframes
Allowed values:
  • all
    All iframes are loaded.
  • same-origin
    Only iframes with the same origin as the main page are loaded.
  • none
    Iframe loading is disabled.
Default: all 
public HtmlToPdfClient setBlockAds(bool value)
Try to block ads. Enabling this option can produce smaller output and speed up the conversion.
value
Set to true to block ads in web pages.
Default: false 
public HtmlToPdfClient setDefaultEncoding(string encoding)
Set the default HTML content text encoding.
encoding
The text encoding of the HTML content.
Default: auto detect
Examples:
  • Set to use Latin-2 encoding.
    setDefaultEncoding("iso8859-2")
  • Set to use UTF-8 encoding.
    setDefaultEncoding("utf-8") 
public HtmlToPdfClient setLocale(string locale)
Set the locale for the conversion. This may affect the output format of dates, times and numbers.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
locale
The locale code according to ISO 639.
Default: en-US
Example:
  • Set to use Japanese locale.
    setLocale("ja-JP") 
public HtmlToPdfClient setHttpAuth(string userName, string password)
Set credentials to access HTTP base authentication protected websites.
userName
Set the HTTP authentication user name.
password
Set the HTTP authentication password. 
public HtmlToPdfClient setCookies(string cookies)
Set cookies that are sent in Pdfcrowd HTTP requests.
cookies
The cookie string.
Example:
  • setCookies("session=6d7184b3bf35;token=2710") 
public HtmlToPdfClient setVerifySslCertificates(bool value)
Do not allow insecure HTTPS connections.
value
Set to true to enable SSL certificate verification.
Default: false 
public HtmlToPdfClient setFailOnMainUrlError(bool failOnError)
Abort the conversion if the main URL HTTP status code is greater than or equal to 400.
failOnError
Set to true to abort the conversion.
Default: 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.
failOnError
Set to true to abort the conversion.
Default: false 
public HtmlToPdfClient setNoXpdfcrowdHeader(bool value)
Do not send the X-Pdfcrowd HTTP header in Pdfcrowd HTTP requests.
value
Set to true to disable sending X-Pdfcrowd HTTP header.
Default: false 
public HtmlToPdfClient setCssPageRuleMode(string mode)
Specifies behavior in presence of CSS @page rules. It may affect the page size, margins and orientation.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
mode
The page rule mode.
Allowed values:
  • default
    The Pdfcrowd API page settings are preferred.
  • mode1
    The converter version 18.10 mode.
  • mode2
    CSS @page rule is preferred.
Default: default 
public HtmlToPdfClient setCustomCss(string css)
Apply custom CSS to the input HTML document. It allows you to modify the visual appearance and layout of your HTML content dynamically. Tip: Using !important in custom CSS provides a way to prioritize and override conflicting styles.
Availability: API client >= 5.14.0, converter >= 20.10. See versioning.
css
A string containing valid CSS.
Examples:
  • Set the page background color to gray.
    setCustomCss("body { background-color: gray; }")
  • Do not show nav HTML elements and the element with ad-block ID in the output PDF.
    setCustomCss("nav, #ad-block { display: none !important; }") 
public HtmlToPdfClient setCustomJavascript(string javascript)
Run a custom JavaScript after the document is loaded and ready to print. The script is intended for post-load DOM manipulation (add/remove elements, update CSS, ...). In addition to the standard browser APIs, the custom JavaScript code can use helper functions from our JavaScript library.
javascript
A string containing a JavaScript code.
Example:
  • Set the page background color to gray.
    setCustomJavascript("document.body.style.setProperty('background-color', 'gray', 'important')") 
public HtmlToPdfClient setOnLoadJavascript(string javascript)
Run a custom JavaScript right after the document is loaded. The script is intended for early DOM manipulation (add/remove elements, update CSS, ...). In addition to the standard browser APIs, the custom JavaScript code can use helper functions from our JavaScript library.
javascript
A string containing a JavaScript code.
Example:
  • Set the page background color to gray.
    setOnLoadJavascript("document.body.style.setProperty('background-color', 'gray', 'important')") 
public HtmlToPdfClient setCustomHttpHeader(string header)
Set a custom HTTP header that is sent in Pdfcrowd HTTP requests.
header
A string containing the header name and value separated by a colon.
Example:
  • setCustomHttpHeader("X-My-Client-ID:k2017-12345") 
public HtmlToPdfClient setJavascriptDelay(int delay)
Wait the specified number of milliseconds to finish all JavaScript after the document is loaded. Your API license defines the maximum wait time by "Max Delay" parameter.
delay
The number of milliseconds to wait.
Must be a positive integer number or 0.
Default: 200
Example:
  • Wait for 2 seconds.
    setJavascriptDelay(2000) 
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.
selectors
One or more CSS selectors separated by commas.
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. This can affect the CSS rules used.
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 siblings are hidden.
Default: 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.
selectors
One or more CSS selectors separated by commas.
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 setAutoDetectElementToConvert(bool value)
The main HTML element for conversion is detected automatically.
Availability: API client >= 5.5.0, converter >= 20.10. See versioning.
value
Set to true to detect the main element.
Default: false 
public HtmlToPdfClient setReadabilityEnhancements(string enhancements)
The input HTML is automatically enhanced to improve the readability.
Availability: API client >= 5.5.0, converter >= 20.10. See versioning.
enhancements
Allowed values:
  • none
    No enhancements are used.
  • readability-v1
    Version 1 of the enhancements is used.
  • readability-v2
    Version 2 of the enhancements is used.
  • readability-v3
    Version 3 of the enhancements is used.
  • readability-v4
    Version 4 of the enhancements is used.
Default: none 
public HtmlToPdfClient setViewportWidth(int width)
Deprecated Replaced with: setContentViewportWidth()
Set the viewport width in pixels. The viewport is the user's visible area of the page.
width
The value must be in the range 96-65000.
Example:
  • Full HD width.
    setViewportWidth(1920) 
public HtmlToPdfClient setViewportHeight(int height)
Deprecated Replaced with: setContentViewportHeight()
Set the viewport height in pixels. The viewport is the user's visible area of the page. If the input HTML uses lazily loaded images, try using a large value that covers the entire height of the HTML, e.g. 100000.
height
Must be a positive integer number.
Example:
  • setViewportHeight(15000) 
public HtmlToPdfClient setViewport(int width, int height)
Deprecated Replaced with: setContentViewportWidth() setContentViewportHeight()
Set the viewport size. The viewport is the user's visible area of the page.
width
Set the viewport width in pixels. The viewport is the user's visible area of the page.
The value must be in the range 96-65000.
height
Set the viewport height in pixels. The viewport is the user's visible area of the page. If the input HTML uses lazily loaded images, try using a large value that covers the entire height of the HTML, e.g. 100000.
Must be a positive integer number.
public HtmlToPdfClient setRenderingMode(string mode)
Deprecated Replaced with: setContentViewportWidth()
Set the rendering mode of the page, allowing control over how content is displayed.
mode
The rendering mode.
Allowed values:
  • default
    The mode based on the standard browser print functionality.
  • viewport
    Adapts the rendering according to the specified viewport width, influencing the @media (min-width) and @media (max-width) CSS properties. This mode is ideal for previewing different responsive designs of a web page, such as mobile or desktop views, by choosing the appropriate viewport size. 
public HtmlToPdfClient setSmartScalingMode(string mode)
Deprecated Replaced with: setContentFitMode()
Specifies the scaling mode used for fitting the HTML contents to the print area.
mode
The smart scaling mode.
Allowed values:
  • default
    The mode based on the standard browser print functionality.
  • disabled
    No smart scaling is performed.
  • viewport-fit
    The viewport width fits the print area width.
  • content-fit
    The HTML contents width fits the print area width.
  • single-page-fit
    The whole HTML contents fits the print area of a single page.
  • single-page-fit-ex
    The whole HTML contents fits the print area of a single page with respect to the page height/width ratio.
  • mode1
    Scaling mode 1 is applied. 
public HtmlToPdfClient setScaleFactor(int factor)
Set the scaling factor (zoom) for the main page area.
factor
The percentage value.
The value must be in the range 10-500.
Default: 100
Example:
  • setScaleFactor(50) 
public HtmlToPdfClient setDisableSmartShrinking(bool value)
Disable the intelligent shrinking strategy that tries to optimally fit the HTML contents to a PDF page.
API client < 5.0.0. Smart scaling mode1 can be used instead. See versioning.
value
Set to true to disable the intelligent shrinking strategy.
Default: false 
public HtmlToPdfClient setJpegQuality(int quality)
Set the quality of embedded JPEG images. A lower quality results in a smaller PDF file but can lead to compression artifacts.
quality
The percentage value.
The value must be in the range 1-100.
Default: 100
Example:
  • Set 70% quality as a compromise between image quality and image size.
    setJpegQuality(70) 
public HtmlToPdfClient setConvertImagesToJpeg(string images)
Specify which image types will be converted to JPEG. Converting lossless compression image formats (PNG, GIF, ...) to JPEG may result in a smaller PDF file.
images
The image category.
Allowed values:
  • none
    No image conversion is done.
  • opaque
    Only opaque images are converted to JPEG images.
  • all
    All images are converted to JPEG images. The JPEG format does not support transparency so the transparent color is replaced by a PDF page background color.
Default: none 
public HtmlToPdfClient setImageDpi(int dpi)
Set the DPI of images in PDF. A lower DPI may result in a smaller PDF file. If the specified DPI is higher than the actual image DPI, the original image DPI is retained (no upscaling is performed). Use 0 to leave the images unaltered.
dpi
The DPI value.
Must be a positive integer number or 0.
Default: 0
Examples:
  • No change of the source image is done.
    setImageDpi(0)
  • Screen-only view lower DPI.
    setImageDpi(72)
  • Screen-only view recommended DPI.
    setImageDpi(96)
  • Ebook typical DPI.
    setImageDpi(150)
  • Printer standard DPI.
    setImageDpi(300)

PDF Format

Miscellaneous values for PDF output.

public HtmlToPdfClient setEnablePdfForms(bool value)
Convert HTML forms to fillable PDF forms. Details can be found in the blog post.
value
Set to true to make fillable PDF forms.
Default: false 
public HtmlToPdfClient setLinearize(bool value)
Create linearized PDF. This is also known as Fast Web View.
value
Set to true to create linearized PDF.
Default: false 
public HtmlToPdfClient setEncrypt(bool value)
Encrypt the PDF. This prevents search engines from indexing the contents.
value
Set to true to enable PDF encryption.
Default: false 
public HtmlToPdfClient setUserPassword(string password)
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.
password
The user password.
Example:
  • setUserPassword("123456") 
public HtmlToPdfClient setOwnerPassword(string password)
Protect the PDF with an owner password. Supplying an owner password grants unlimited access to the PDF including changing the passwords and access permissions.
password
The owner password.
Example:
  • setOwnerPassword("123456") 
public HtmlToPdfClient setNoPrint(bool value)
Disallow printing of the output PDF.
value
Set to true to set the no-print flag in the output PDF.
Default: false 
public HtmlToPdfClient setNoModify(bool value)
Disallow modification of the output PDF.
value
Set to true to set the read-only only flag in the output PDF.
Default: false 
public HtmlToPdfClient setNoCopy(bool value)
Disallow text and graphics extraction from the output PDF.
value
Set to true to set the no-copy flag in the output PDF.
Default: false 
public HtmlToPdfClient setTitle(string title)
Set the title of the PDF.
title
The title.
Example:
  • setTitle("My Resume") 
public HtmlToPdfClient setSubject(string subject)
Set the subject of the PDF.
subject
The subject.
Example:
  • setSubject("CV - Software Developer") 
public HtmlToPdfClient setAuthor(string author)
Set the author of the PDF.
author
The author.
Example:
  • setAuthor("John Doe") 
public HtmlToPdfClient setKeywords(string keywords)
Associate keywords with the document.
keywords
The string with the keywords.
Example:
  • setKeywords("software developer, Unix, databases") 
public HtmlToPdfClient setExtractMetaTags(bool value)
Extract meta tags (author, keywords and description) from the input HTML and use them in the output PDF.
value
Set to true to extract meta tags.
Default: false

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 layout)
Specify the page layout to be used when the document is opened.
layout
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 mode)
Specify how the document should be displayed when opened.
mode
Allowed values:
  • full-screen
    Full-screen mode.
  • thumbnails
    Thumbnail images are visible.
  • outlines
    Document outline is visible. 
public HtmlToPdfClient setInitialZoomType(string zoomType)
Specify how the page should be displayed when opened.
zoomType
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 page)
Display the specified page when the document is opened.
page
Must be a positive integer number.
Example:
  • setInitialPage(2) 
public HtmlToPdfClient setInitialZoom(int zoom)
Specify the initial page zoom in percents when the document is opened.
zoom
Must be a positive integer number.
Example:
  • setInitialZoom(50) 
public HtmlToPdfClient setHideToolbar(bool value)
Specify whether to hide the viewer application's tool bars when the document is active.
value
Set to true to hide tool bars.
Default: false 
public HtmlToPdfClient setHideMenubar(bool value)
Specify whether to hide the viewer application's menu bar when the document is active.
value
Set to true to hide the menu bar.
Default: false 
public HtmlToPdfClient setHideWindowUi(bool value)
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.
value
Set to true to hide ui elements.
Default: false 
public HtmlToPdfClient setFitWindow(bool value)
Specify whether to resize the document's window to fit the size of the first displayed page.
value
Set to true to resize the window.
Default: false 
public HtmlToPdfClient setCenterWindow(bool value)
Specify whether to position the document's window in the center of the screen.
value
Set to true to center the window.
Default: false 
public HtmlToPdfClient setDisplayTitle(bool value)
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.
value
Set to true to display the title.
Default: false 
public HtmlToPdfClient setRightToLeft(bool value)
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
value
Set to true to set right-to-left reading order.
Default: false

Data

Methods related to HTML template rendering.

public HtmlToPdfClient setDataString(string dataString)
Set the input data for template rendering. The data format can be JSON, XML, YAML or CSV.
dataString
The input data string.
Example:
  • JSON data.
    setDataString("{"recipient": "Anna May", "sender": "John Doe"}") 
public HtmlToPdfClient setDataFile(string dataFile)
Load the input data for template rendering from the specified file. The data format can be JSON, XML, YAML or CSV.
dataFile
The file path to a local file containing the input data.
Example:
  • setDataFile("/home/user/john/data.json") 
public HtmlToPdfClient setDataFormat(string dataFormat)
Specify the input data format.
dataFormat
The data format.
Allowed values:
  • auto
    the data format is auto detected
  • json
  • xml
  • yaml
  • csv
Default: auto 
public HtmlToPdfClient setDataEncoding(string encoding)
Set the encoding of the data file set by setDataFile.
encoding
The data file encoding.
Default: utf-8
Example:
  • Set to use Latin-2 encoding.
    setDataEncoding("iso8859-2") 
public HtmlToPdfClient setDataIgnoreUndefined(bool value)
Ignore undefined variables in the HTML template. The default mode is strict so any undefined variable causes the conversion to fail. You can use {% if variable is defined %} to check if the variable is defined.
value
Set to true to ignore undefined variables.
Default: false 
public HtmlToPdfClient setDataAutoEscape(bool value)
Auto escape HTML symbols in the input data before placing them into the output.
value
Set to true to turn auto escaping on.
Default: false 
public HtmlToPdfClient setDataTrimBlocks(bool value)
Auto trim whitespace around each template command block.
value
Set to true to turn auto trimming on.
Default: false 
public HtmlToPdfClient setDataOptions(string options)
Set the advanced data options:
  • csv_delimiter - The CSV data delimiter, the default is ,.
  • xml_remove_root - Remove the root XML element from the input data.
  • data_root - The name of the root element inserted into the input data without a root node (e.g. CSV), the default is data.
options
Comma separated list of options.
Examples:
  • Use semicolon to separate CSV data.
    setDataOptions("csv_delimiter=;")
  • Name the root of data rows and use the name in the template loop {% for row in rows %}...{% endfor %}.
    setDataOptions("data_root=rows")
  • Remove XML root so it the HTML template can be more simple.
    setDataOptions("xml_remove_root=1")

Miscellaneous

public HtmlToPdfClient setDebugLog(bool value)
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.
value
Set to true to enable the debug logging.
Default: 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.
This method can only be called after a call to one of the convertXtoY methods.
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 number of pages in the output document.
Returns
  • int - The page count. 
public int getTotalPageCount()
Get the total number of pages in the original output document, including the pages excluded by setPrintPageRange().
Returns
  • int - The total page count. 
public int getOutputSize()
Get the size of the output in bytes.
Returns
  • int - The count of bytes. 
public string getVersion()
Get the version details.
Returns
  • string - API version, converter version, and client version. 
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.
tag
A string with the custom tag.
Example:
  • setTag("client-1234") 
public HtmlToPdfClient setHttpProxy(string proxy)
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.
proxy
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 proxy)
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.
proxy
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 certificate)
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.
certificate
The file must be in PKCS12 format.
The file must exist and not be empty.
Example:
  • setClientCertificate("/home/user/john/pdfcrowd.crt") 
public HtmlToPdfClient setClientCertificatePassword(string password)
A password for PKCS12 file with a client certificate if it is needed.
password
Example:
  • setClientCertificatePassword("123456")

Tweaks

Expert options for fine-tuning output.

public HtmlToPdfClient setLayoutDpi(int dpi)
Set the internal DPI resolution used for positioning of PDF contents. It can help in situations when there are small inaccuracies in the PDF. It is recommended to use values that are a multiple of 72, such as 288 or 360.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
dpi
The DPI value.
The value must be in the range of 72-600.
Default: 300
Example:
  • setLayoutDpi(144) 
public HtmlToPdfClient setContentAreaX(string x)
Set the top left X coordinate of the content area. It is relative to the top left X coordinate of the print area.
x
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt". It may contain a negative value.
Default: 0in
Examples:
  • setContentAreaX("-1in")
  • setContentAreaX("2.5cm") 
public HtmlToPdfClient setContentAreaY(string y)
Set the top left Y coordinate of the content area. It is relative to the top left Y coordinate of the print area.
y
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt". It may contain a negative value.
Default: 0in
Examples:
  • setContentAreaY("-1in")
  • setContentAreaY("2.5cm") 
public HtmlToPdfClient setContentAreaWidth(string width)
Set the width of the content area. It should be at least 1 inch.
width
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: The width of the print area.
Examples:
  • setContentAreaWidth("8in")
  • setContentAreaWidth("25cm") 
public HtmlToPdfClient setContentAreaHeight(string height)
Set the height of the content area. It should be at least 1 inch.
height
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: The height of the print area.
Examples:
  • setContentAreaHeight("8in")
  • setContentAreaHeight("25cm") 
public HtmlToPdfClient setContentArea(string x, string y, string width, string height)
Set the content area position and size. The content area enables to specify a web page area to be converted.
x
Set the top left X coordinate of the content area. It is relative to the top left X coordinate of the print area.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt". It may contain a negative value.
Default: 0in
y
Set the top left Y coordinate of the content area. It is relative to the top left Y coordinate of the print area.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt". It may contain a negative value.
Default: 0in
width
Set the width of the content area. It should be at least 1 inch.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: The width of the print area.
height
Set the height of the content area. It should be at least 1 inch.
The value must be specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".
Default: The height of the print area. 
public HtmlToPdfClient setContentsMatrix(string matrix)
A 2D transformation matrix applied to the main contents on each page. The origin [0,0] is located at the top-left corner of the contents. The resolution is 72 dpi.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
matrix
A comma separated string of matrix elements: "scaleX,skewX,transX,skewY,scaleY,transY"
Default: 1,0,0,0,1,0
Examples:
  • Fine tune the contents height.
    setContentsMatrix("1,0,0,0,1.001,0")
  • Translate the contents by -10 points in both directions.
    setContentsMatrix("1,0,-10,0,1,-10") 
public HtmlToPdfClient setHeaderMatrix(string matrix)
A 2D transformation matrix applied to the page header contents. The origin [0,0] is located at the top-left corner of the header. The resolution is 72 dpi.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
matrix
A comma separated string of matrix elements: "scaleX,skewX,transX,skewY,scaleY,transY"
Default: 1,0,0,0,1,0
Examples:
  • Fine tune the header contents height.
    setHeaderMatrix("1,0,0,0,1.001,0")
  • Translate the header contents by -10 points in both directions.
    setHeaderMatrix("1,0,-10,0,1,-10")
A 2D transformation matrix applied to the page footer contents. The origin [0,0] is located at the top-left corner of the footer. The resolution is 72 dpi.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
Examples:
  • Fine tune the footer contents height.
    setFooterMatrix("1,0,0,0,1.001,0")
  • Translate the footer contents by -10 points in both directions.
    setFooterMatrix("1,0,-10,0,1,-10") 
public HtmlToPdfClient setDisablePageHeightOptimization(bool value)
Disable automatic height adjustment that compensates for pixel to point rounding errors.
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
value
Set to true to disable automatic height scale.
Default: false 
public HtmlToPdfClient setMainDocumentCssAnnotation(bool value)
Add special CSS classes to the main document's body element. This allows applying custom styling based on these classes:
  • pdfcrowd-page-X - where X is the current page number
  • pdfcrowd-page-odd - odd page
  • pdfcrowd-page-even - even page
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
value
Set to true to add the special CSS classes.
Default: false

Warning

If your custom styling affects the contents area size (e.g. by using different margins, padding, border width), the resulting PDF may contain duplicit contents or some contents may be missing.

Example:
Add special CSS classes to the header/footer's body element. This allows applying custom styling based on these classes:
  • pdfcrowd-page-X - where X is the current page number
  • pdfcrowd-page-count-X - where X is the total page count
  • pdfcrowd-page-first - the first page
  • pdfcrowd-page-last - the last page
  • pdfcrowd-page-odd - odd page
  • pdfcrowd-page-even - even page
Availability: API client >= 5.0.0, converter >= 20.10. See versioning.
Examples:
public HtmlToPdfClient setMaxLoadingTime(int maxTime)
Set the maximum time to load the page and its resources. After this time, all requests will be considered successful. This can be useful to ensure that the conversion does not timeout. Use this method if there is no other way to fix page loading.
Availability: API client >= 5.15.0, converter >= 20.10. See versioning.
maxTime
The number of seconds to wait.
The value must be in the range 10-30.
public HtmlToPdfClient setConversionConfig(string jsonString)

Allows to configure conversion via JSON. The configuration defines various page settings for individual PDF pages or ranges of pages. It provides flexibility in designing each page of the PDF, giving control over each page's size, header, footer etc. If a page or parameter is not explicitly specified, the system will use the default settings for that page or attribute. If a JSON configuration is provided, the settings in the JSON will take precedence over the global options.

The structure of the JSON must be:

  • pageSetup: An array of objects where each object defines the configuration for a specific page or range of pages. The following properties can be set for each page object:
    • pages: A comma-separated list of page numbers or ranges. Special strings may be used, such as `odd`, `even` and `last`. For example:
      • 1-: from page 1 to the end of the document
      • 2: only the 2nd page
      • 2,4,6: pages 2, 4, and 6
      • 2-5: pages 2 through 5
      • odd,2: the 2nd page and all odd pages
    • pageSize: The page size (optional). Possible values: A0, A1, A2, A3, A4, A5, A6, Letter.
    • pageWidth: The width of the page (optional).
    • pageHeight: The height of the page (optional).
    • marginLeft: Left margin (optional).
    • marginRight: Right margin (optional).
    • marginTop: Top margin (optional).
    • marginBottom: Bottom margin (optional).
    • displayHeader: Header appearance (optional). Possible values:
      • none: completely excluded
      • space: only the content is excluded, the space is used
      • content: the content is printed (default)
    • displayFooter: Footer appearance (optional). Possible values:
      • none: completely excluded
      • space: only the content is excluded, the space is used
      • content: the content is printed (default)
    • headerHeight: Height of the header (optional).
    • footerHeight: Height of the footer (optional).
    • orientation: Page orientation, such as "portrait" or "landscape" (optional).
    • backgroundColor: Page background color in RRGGBB or RRGGBBAA hexadecimal format (optional).

Dimensions may be empty, 0 or specified in inches "in", millimeters "mm", centimeters "cm", pixels "px", or points "pt".

Availability: API client >= 6.1.0, converter >= 24.04. See versioning.
jsonString
The JSON string.
Example:
  • Modify the margins and orientation, and hide the header and footer on some pages. 
    {
  "pageSetup": [
    {
      "pages": "1,3",
      "marginLeft": "72pt",
      "marginRight": "72pt",
      "marginTop": "72pt",
      "marginBottom": "72pt",
      "displayHeader": "content",
      "displayFooter": "none"
    },
    {
      "pages": "2-5",
      "orientation": "landscape",
      "marginTop": "0",
      "marginBottom": "0",
      "headerHeight": "1cm",
      "displayHeader": "content",
      "displayFooter": "none"
    },
    {
      "pages": "10",
      "pageWidth": "6in",
      "pageHeight": "10in",
      "displayHeader": "none",
      "displayFooter": "content"
    },
    {
      "pages": "last",
      "backgroundColor": "00ff0080"
    }
  ]
}
public HtmlToPdfClient setConversionConfigFile(string filepath)
Allows to configure the conversion process via JSON file. See details of the JSON string.
Availability: API client >= 6.1.0, converter >= 24.04. See versioning.
filepath
The file path to a local file.
The file must exist and not be empty.
Examples:
  • setConversionConfigFile("/home/user/john/conv_config.json")
  • see example of the JSON string 
public HtmlToPdfClient setConverterUserAgent(string agent)
Specifies the User-Agent HTTP header that will be used by the converter when a request is made to the converted web page.
Availability: API client >= 6.4.0 See versioning.
agent
The user agent.
Allowed values:
  • chrome-desktop
    The user-agent for desktop chrome corresponding to the converter used.
  • chrome-mobile
    The user-agent for mobile chrome corresponding to the converter used.
  • latest-chrome-desktop
    The user-agent of the recently released Chrome browser on desktops.
  • latest-chrome-mobile
    The user-agent of the recently released Chrome browser on mobile devices.
  • A custom string for the user agent.
Default: chrome-desktop
Examples:
  • Mimic the recent chrome on mobiles.
    setConverterUserAgent("latest-chrome-mobile")
  • Mimic Safari 18.0 browser.
    setConverterUserAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 14_7_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Safari/605.1.15")

API Client Options

public HtmlToPdfClient setConverterVersion(string version)
Set the converter version. Different versions may produce different output. Choose which one provides the best output for your case.
Availability: API client >= 5.0.0. See versioning.
version
The version identifier.
Allowed values:
  • 24.04
    Version 24.04.
  • 20.10
    Version 20.10.
  • 18.10
    Version 18.10.
Default: 24.04 
public HtmlToPdfClient setUseHttp(bool value)
Specifies if the client communicates over HTTP or HTTPS with Pdfcrowd API.
value
Set to true to use HTTP.
Default: false

Warning

Using HTTP is insecure as data sent over HTTP is not encrypted. Enable this option only if you know what you are doing.

public HtmlToPdfClient setClientUserAgent(string agent)
Specifies the User-Agent HTTP header that the client library will use when interacting with the API.
Availability: API client >= 6.4.0 See versioning.
agent
The user agent string. 
public HtmlToPdfClient setUserAgent(string agent)
Deprecated Replaced with: setClientUserAgent()
Set a custom user agent HTTP header. It can be useful if you are behind a proxy or a firewall.
agent
The user agent string.
Default: pdfcrowd_dotnet_client/6.4.0 (https://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.
host
The proxy hostname.
port
The proxy port.
userName
The username.
password
The password. 
public HtmlToPdfClient setRetryCount(int count)
Specifies the number of automatic retries when the 502 or 503 HTTP status code is received. The status code indicates a temporary network issue. This feature can be disabled by setting to 0.
count
Number of retries.
Default: 1
Example:
  • setRetryCount(3)