Converts markdown to HTML with inline CSS styling, originally built for WeChat Official Account publishing but works anywhere you need self-contained HTML. Ships with three themes (default, grace, simple) and handles the usual suspects: code highlighting, tables, footnotes, alerts, even mermaid and PlantUML diagrams. The workflow is smart about Chinese content, offering to auto-format CJK text first to fix spacing and bold marker issues before conversion. Outputs to the same directory as your source file with automatic backup if a file exists. Supports EXTEND.md for custom CSS variables if you want to tweak colors without forking. The keep-title flag is a nice touch for when you don't want it stripping your first heading.
npx skills add https://github.com/freestylefly/canghe-skills --skill canghe-markdown-to-html