Section:

HTML to PDF Conversion - HTML2PDF

Sample code for using Apryse SDK to directly convert HTML pages to PDF by using 'pdftron.PDF.HTML2PDF', provided in Python, C++, C#, Java, Node.js (JavaScript), PHP, Ruby, Go and VB. The HTML2PDF converter supports conversion from a string or URL and offers many options to control page size and formatting. Learn more about our Server SDK and PDF Conversion Library.

1//---------------------------------------------------------------------------------------
2// Copyright (c) 2001-2024 by Apryse Software Inc. All Rights Reserved.
3// Consult legal.txt regarding legal and license information.
4//---------------------------------------------------------------------------------------
5
6using System;
7using System.IO;
8
9using pdftron;
10using pdftron.Common;
11using pdftron.SDF;
12using pdftron.PDF;
13
14namespace HTML2PDFTestCS
15{
16	//---------------------------------------------------------------------------------------
17	// The following sample illustrates how to convert HTML pages to PDF format using
18	// the HTML2PDF class.
19	// 
20	// 'pdftron.PDF.HTML2PDF' is an optional PDFNet Add-On utility class that can be 
21	// used to convert HTML web pages into PDF documents by using an external module (html2pdf).
22	//
23	// html2pdf modules can be downloaded from http://www.pdftron.com/pdfnet/downloads.html.
24	//
25	// Users can convert HTML pages to PDF using the following operations:
26	// - Simple one line static method to convert a single web page to PDF. 
27	// - Convert HTML pages from URL or string, plus optional table of contents, in user defined order. 
28	// - Optionally configure settings for proxy, images, java script, and more for each HTML page. 
29	// - Optionally configure the PDF output, including page size, margins, orientation, and more. 
30	// - Optionally add table of contents, including setting the depth and appearance.
31	//---------------------------------------------------------------------------------------
32	class HTML2PDFSample
33	{
34		private static pdftron.PDFNetLoader pdfNetLoader = pdftron.PDFNetLoader.Instance();
35		static HTML2PDFSample() {}
36		
37		static void Main(string[] args)
38		{
39			string output_path = "../../../../TestFiles/Output/html2pdf_example";
40			string host = "https://docs.apryse.com";
41			string page0 = "/";
42			string page1 = "/all-products/";
43			string page2 = "/web/faq";
44
45			// The first step in every application using PDFNet is to initialize the 
46			// library and set the path to common PDF resources. The library is usually 
47			// initialized only once, but calling Initialize() multiple times is also fine.
48			PDFNet.Initialize(PDFTronLicense.Key);
49			// For HTML2PDF we need to locate the html2pdf module. If placed with the 
50			// PDFNet library, or in the current working directory, it will be loaded
51			// automatically. Otherwise, it must be set manually using HTML2PDF.SetModulePath().
52			HTML2PDF.SetModulePath("../../../../../Lib");
53			if (!HTML2PDF.IsModuleAvailable())
54			{
55				Console.WriteLine();
56				Console.WriteLine("Unable to run HTML2PDFTest: Apryse SDK HTML2PDF module not available.");
57				Console.WriteLine("---------------------------------------------------------------");
58				Console.WriteLine("The HTML2PDF module is an optional add-on, available for download");
59				Console.WriteLine("at http://www.pdftron.com/. If you have already downloaded this");
60				Console.WriteLine("module, ensure that the SDK is able to find the required files");
61				Console.WriteLine("using the HTML2PDF.SetModulePath() function.");
62				Console.WriteLine();
63				return;
64			}
65			
66			//--------------------------------------------------------------------------------
67			// Example 1) Simple conversion of a web page to a PDF doc. 
68
69			try
70			{
71				using (PDFDoc doc = new PDFDoc())
72				{
73
74					// now convert a web page, sending generated PDF pages to doc
75					HTML2PDF.Convert(doc, host + page0);
76					doc.Save(output_path + "_01.pdf", SDFDoc.SaveOptions.e_linearized);
77				}
78			}
79			catch (PDFNetException e)
80			{
81				Console.WriteLine(e.Message);
82			}
83
84			//--------------------------------------------------------------------------------
85			// Example 2) Modify the settings of the generated PDF pages and attach to an
86			// existing PDF document. 
87
88			try
89			{
90				// open the existing PDF, and initialize the security handler
91				using (PDFDoc doc = new PDFDoc("../../../../TestFiles/numbered.pdf"))
92				{
93					doc.InitSecurityHandler();
94
95					// create the HTML2PDF converter object and modify the output of the PDF pages
96					HTML2PDF converter = new HTML2PDF();
97					converter.SetPaperSize(PrinterMode.PaperSize.e_11x17);
98
99					// insert the web page to convert
100					converter.InsertFromURL(host + page0);
101
102					// convert the web page, appending generated PDF pages to doc
103					converter.Convert(doc);
104					doc.Save(output_path + "_02.pdf", SDFDoc.SaveOptions.e_linearized);
105				}
106			}
107			catch (PDFNetException e)
108			{
109				Console.WriteLine(e.Message);
110			}
111
112			//--------------------------------------------------------------------------------
113			// Example 3) Convert multiple web pages
114
115			try
116			{
117				using (PDFDoc doc = new PDFDoc())
118				{
119					// convert page 0 into pdf
120					HTML2PDF converter = new HTML2PDF();
121					string header = "<div style='width:15%;margin-left:0.5cm;text-align:left;font-size:10px;color:#0000FF'><span class='date'></span></div><div style='width:70%;direction:rtl;white-space:nowrap;overflow:hidden;text-overflow:clip;text-align:center;font-size:10px;color:#0000FF'><span>PDFTRON HEADER EXAMPLE</span></div><div style='width:15%;margin-right:0.5cm;text-align:right;font-size:10px;color:#0000FF'><span class='pageNumber'></span> of <span class='totalPages'></span></div>";
122					string footer = "<div style='width:15%;margin-left:0.5cm;text-align:left;font-size:7px;color:#FF00FF'><span class='date'></span></div><div style='width:70%;direction:rtl;white-space:nowrap;overflow:hidden;text-overflow:clip;text-align:center;font-size:7px;color:#FF00FF'><span>PDFTRON FOOTER EXAMPLE</span></div><div style='width:15%;margin-right:0.5cm;text-align:right;font-size:7px;color:#FF00FF'><span class='pageNumber'></span> of <span class='totalPages'></span></div>";
123					converter.SetHeader(header);
124					converter.SetFooter(footer);
125					converter.SetMargins("1cm", "2cm", ".5cm", "1.5cm");
126
127					HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
128					settings.SetZoom(0.5);
129					converter.InsertFromURL(host + page0, settings);
130					converter.Convert(doc);
131
132					// convert page 1 with the same settings, appending generated PDF pages to doc
133					converter.InsertFromURL(host + page1, settings);
134					converter.Convert(doc);
135
136					// convert page 2 with different settings, appending generated PDF pages to doc
137					HTML2PDF another_converter = new HTML2PDF();
138					another_converter.SetLandscape(true);
139					HTML2PDF.WebPageSettings another_settings = new HTML2PDF.WebPageSettings();
140					another_settings.SetPrintBackground(false);
141					another_converter.InsertFromURL(host + page2, another_settings);
142					another_converter.Convert(doc);
143
144					doc.Save(output_path + "_03.pdf", SDFDoc.SaveOptions.e_linearized);
145				}
146			}
147			catch (PDFNetException e)
148			{
149				Console.WriteLine(e.Message);
150			}
151
152			//--------------------------------------------------------------------------------
153			// Example 4) Convert HTML string to PDF. 
154
155			try
156			{
157				using (PDFDoc doc = new PDFDoc())
158				{
159
160					HTML2PDF converter = new HTML2PDF();
161				
162					// Our HTML data
163					string html = "<html><body><h1>Heading</h1><p>Paragraph.</p></body></html>";
164					
165					// Add html data
166					converter.InsertFromHtmlString(html);
167					// Note, InsertFromHtmlString can be mixed with the other Insert methods.
168
169					converter.Convert(doc);
170					doc.Save(output_path + "_04.pdf", SDFDoc.SaveOptions.e_linearized);
171				}
172			}
173			catch (PDFNetException e)
174			{
175				Console.WriteLine(e.Message);
176			}
177
178			//--------------------------------------------------------------------------------
179			// Example 5) Set the location of the log file to be used during conversion.
180
181			try
182			{
183				using (PDFDoc doc = new PDFDoc())
184				{
185					HTML2PDF converter = new HTML2PDF();
186					converter.SetLogFilePath("../../../../TestFiles/Output/html2pdf.log");
187					converter.InsertFromURL(host + page0);
188					converter.Convert(doc);
189					doc.Save(output_path + "_05.pdf", SDFDoc.SaveOptions.e_linearized);
190				}
191			}
192			catch (PDFNetException e)
193			{
194				Console.WriteLine(e.Message);
195			}
196
197			PDFNet.Terminate();
198		}
199	}
200}

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