Openpdf‐html - LibrePDF/OpenPDF GitHub Wiki
OpenPDF-html is an HTML-to-PDF rendering engine built on a modernized fork of Flying Saucer, designed to integrate seamlessly with the OpenPDF library and support HTML5 and CSS3 features.
OpenPDF-html is a fork of Flying Saucer circa v9.11.0, focused on bringing modern HTML and CSS rendering capabilities to the OpenPDF library.
The goal of this project is to upgrade and maintain the HTML-to-PDF rendering engine, ensuring support for modern web standards. This enables developers to generate high-quality PDF documents from HTML5 and CSS3 content using OpenPDF.
- Modern HTML5 support (in progress)
- Uses neko-htmlunit as HTML parser, which will enable HTML5 parsing: https://github.com/HtmlUnit/htmlunit-neko (also considering using Jsoup for HTML parsing)
- Improved CSS3 compatibility
- Seamless integration with OpenPDF
- Modular architecture for easier maintenance and extension
- API compatible with Flying saucer, except package names are org.openpdf instead of org.xhtmlrenderer.
You can find a simple working example here: HelloWorldPdf.java
import org.openpdf.pdf.ITextRenderer;
import java.io.FileOutputStream;
public class HelloWorldPdf {
public static void main(String[] args) throws Exception {
String html = """
<html>
<head>
<style>
body { font-family: sans-serif; }
h1 { color: navy; }
</style>
</head>
<body>
<h1>Hello, World!</h1>
<p>This PDF was generated using openpdf-html.</p>
</body>
</html>
""";
try (FileOutputStream outputStream = new FileOutputStream("openpdf-html-hello.pdf")) {
ITextRenderer renderer = new ITextRenderer();
renderer.setDocumentFromString(html);
renderer.layout();
renderer.createPDF(outputStream);
}
System.out.println("PDF created: openpdf-html-hello.pdf");
}
}This project is licensed under the GNU Lesser General Public License (LGPL).
- Refactor architecture for better modularity
- Add support for HTML5 tags and CSS3 properties
- Add comprehensive tests and sample HTML templates
- Publish Maven/Gradle artifacts for easy adoption
Contributions are welcome! Feel free to submit issues, pull requests, or ideas to help improve HTML and CSS support in OpenPDF.