FrankenMermaid: Rust Rewrite of MermaidJS is 100x Faster
doodlestein · x · 2026-08-25
A developer released FrankenMermaid, a ground-up, memory-safe, hyper-optimized Rust implementation of MermaidJS that compiles to WASM. It is over 100x faster than the original.
Key features:
- Pure Rust Core: Zero Node.js dependencies.
- WASM Certified: Runs natively in WebAssembly.
- 15 Layout Algorithms: Including cycle-aware Sugiyama and force-directed.
- 100% Determinism: Byte-identical SHA-256 snapshots.
- Multi-backend: SVG, Canvas2D, Terminal ANSI, WebAssembly.
- Full Parity: Supports all 24 Mermaid syntax families (flowcharts, C4, GitGraph, etc.).
Related event: FrankenMermaid: Pure Rust MermaidJS Rewrite Claims 100x Speedup(5 posts)→
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