ltmermaid – Embed Mermaid diagrams in LaTeX

Embed Mermaid diagrams in LaTeX. Diagram sources are written to disk, and the Mermaid CLI (mmdc) renders vector PDFs, which are then included using \includegraphics.

mermaid.sty is the implementation to be used with pdfLaTeX/XeLaTeX/upLaTeX/LuaLaTeX, etc. It invokes the Mermaid CLI via the shellesc package (or directly via \write18). No Lua interpreter is required.

ltmermaid.sty is an implementation dedicated to LuaLaTeX that provides the same macros (the Renderer option, \Mermaid... macros, and the mermaid environment) as mermaid.sty. The CLI is invoked via Lua's os.execute.

Sources	/macros/latex/contrib/ltmermaid
Documentation	README.md Sample document with ltmermaid.sty Sample document with ltmermaid.sty (Japanese) Sample document with mermaid.sty Sample document with mermaid.sty (Japanese)
Repository	https://github.com/ryoya9826/ltMermaid
Version	1.0 2026-04-16
Licenses	The LaTeX Project Public License 1.3c
Copyright	2026 Ryoya Ando
Maintainer	Ryoya Ando
Topics	Diagrams

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