mikinko/justanothermd_editor

JustAnotherMD Editor, also called JAMD Editor, is a small Windows application for viewing and editing Markdown files. It is built in C++ using the Win32 API together with WebView2, Microsoft's built in web rendering component, so the whole program ships as a single executable file around half a megabyte in size. There is no installer and no background service, it runs fully offline with no telemetry or cloud connection. The main idea is to open a Markdown file instantly and show it rendered the way GitHub would show it, including tables, task lists, footnotes, strikethrough text, and GitHub style alert boxes like notes, tips, and warnings. It can also render Mermaid diagrams and KaTeX math formulas without needing an internet connection, and it uses Prism for code syntax highlighting with several selectable color themes. JSON, YAML, and TOML files can be viewed as a collapsible tree. Pressing Ctrl+E switches from the read only view into a split editor with a formatting toolbar for bold, italic, headings, quotes, lists, links, images, tables, and code blocks. It supports find and replace, pasting images directly into a document, autosave with crash recovery, and detecting when a file changes outside the program. A quick open shortcut searches recent files and the current folder, and there is a presentation mode that turns the document into slides based on headings or divider lines. Documents can be exported to HTML or PDF. The project is aimed at Windows users who work with a lot of Markdown files and want something lightweight rather than a large Electron based editor. It can also be used as a viewer plugin inside Total Commander. Building it from source requires Windows 10 or 11, Visual Studio 2022, CMake, and the WebView2 SDK. The project currently has no license file, so anyone using it should be aware that usage terms have not yet been declared.