FenBrowser is an experimental, clean-slate browser engine written in C#. Instead of pinning onto an existing engine like Chromium or WebKit, this project is a ground-up implementation of the web stack—from the network layer and HTML parser to the CSS layout engine and Skia-based renderer.

The goal of FenBrowser is to implement a standards-compliant engine using modern .NET. We prioritize architectural clarity and modularity over a massive feature list.

• Custom Layout Engine: Supporting Block, Inline, Flex, and Grid formatting contexts.
• Standards-Based Parsing: An HTML5 tree builder and CSS tokenizer following WHATWG/W3C specs as closely as possible.
• Native Rendering: Using SkiaSharp for primitive drawing, with a custom-built paint tree and z-index resolver.
• Automation First: Deep integration with the WebDriver protocol and a basic DevTools implementation for engine inspection.

• FenBrowser.FenEngine: The core layout and rendering logic. This is where the "heavy lifting" happens (Measure/Arrange passes).
• FenBrowser.Core: Shared primitives, the DOM tree implementation, and the HTTP stack.
• FenBrowser.Host: The desktop shell. Currently Windows-focused for debugging and rapid prototyping.
• FenBrowser.WebDriver & DevTools: Specialized projects for controlling and inspecting the engine via standard protocols.

If you want to poke around the code:

1. Open FenBrowser.sln in Visual Studio 2022.
2. Run the FenBrowser.Host project.
3. Check the logs/ folder. We output a lot of diagnostic data:
   • dom_dump.txt: The state of the DOM and Layout boxes.
   • debug_screenshot.png: A raw frame capture of the current render.
   • fenbrowser_*.log: Module-specific traces (CSS, Layout, Performance).

MIT License. See LICENSE for details.