Light MD Viewer 作者： Hayyarden

A lightweight extension that renders Markdown files directly in the browser with syntax highlighting, mermaid diagrams, and a built-in editor.

Features

View mode — clean, readable rendering of .md files with Material Design styling
Edit mode — full CodeMirror 6 editor with GFM syntax highlighting and line numbers
Split mode — side-by-side editor and live preview
Code highlighting — automatic syntax detection for fenced code blocks via highlight.js
Mermaid diagrams — flowcharts, sequence diagrams, and more rendered inline
Export options — download edited files, copy raw markdown or rendered HTML to clipboard
Fully offline — all libraries are bundled locally, no network requests