Update README.md

Author: andreasrosdal

openpdf-renderer/README.md

@@ -87,4 +87,31 @@ public class ImageRendererTest {
 
 ## History
 
-OpenPDF-renderer is a fork from https://github.com/katjas/PDFrenderer forked in june 2025, and is used in accordance with the license: https://github.com/katjas/PDFrenderer/blob/master/LICENSE.txt
+OpenPDF-renderer is a fork from https://github.com/katjas/PDFrenderer (forked from http://java.net/projects/pdf-renderer) forked in june 2025, and is used in accordance with the license: https://github.com/katjas/PDFrenderer/blob/master/LICENSE.txt
+
+## PDFRenderer – Background & Origin
+
+- **Background – Sun Labs**  
+  - Researchers at **Sun Labs** created the **all-Java PDF Renderer** to drive a lightweight PDF viewer for OpenOffice, rendering content via Java2D without needing full browser or native libraries.  
+    :contentReference[oaicite:1]{index=1}
+
+- **Open-Sourcing of the Project**  
+  - When the internal needs waned, Sun Labs offered the project for open-source release. It was adopted and championed by **Josh Marinacci** and **Richard Bair** (of SwingLabs fame).  
+  - **Tom Oke** took lead in further development, and the first open-source release appeared publicly in **December 2007**, under the **LGPL license**.  
+    :contentReference[oaicite:2]{index=2}
+
+- **Key Motivations**  
+  - Java lacked a built-in way to render PDFs. This project enabled:
+    - Previewing PDFs in Swing applications,
+    - Rendering pages as images for printing or embedding,
+    - Using pure Java (Java2D) without external dependencies.  
+    :contentReference[oaicite:3]{index=3}
+
+- **Legacy & Influence**  
+  - **katjas/PDFrenderer** is a modern GitHub-hosted fork of the java.net version. Its goal: fix bugs, improve functionality, and modernize the rendering pipeline.  
+  - Enhancements include:
+    - Better colour space handling,
+    - Support for more PDF features (annotations, fonts, JBIG2 decoding, etc.).  
+    :contentReference[oaicite:4]{index=4}
+
+