Document viewer and in-place editor plugin for Directory Opus. Markdown with Reading, Live and Source split preview, Mermaid diagrams, LaTeX/AsciiMath maths, syntax-highlighted code, an editable CSV grid, rendered HTML, and a binary/hex inspector. 30 palettes, atomic saves and private-by-default images. WebView2 + CodeMirror 6 + KaTeX/Temml.
syntax-highlighting windows html markdown csv latex math markdown-editor codemirror code-editor hex-editor katex note-taking live-preview obsidian mermaid markdown-viewer directory-opus webview2 dopus-plugin
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Updated
Sep 23, 2026