Show HN: Free Mermaid Diagram Editor

ghosts_ 25 points 8 comments July 07, 2026
moxiedocs.com · View on Hacker News

I've been slowly adding some new free tools to Moxie Docs (partly for SEO, partly to illustrate some of our feature sets before any commitment) for some reason this mermaid editor one blew up on Google rankings so I figured I'd share in case people find it useful! We also have ADR, AGENTS.md, LLMs, and a few other free tools.

Discussion Highlights (5 comments)

nonethewiser

Probably because the official editor sucks after paywalling features and steering you into signing up.

BLKNSLVR

Handy. I've been (very loosely) trying to get AI to generate diagrams for a while, and even Copilot can't get Visio's file format correct enough to allow Visio to open it successfully. This is a nice clean interface I can just paste attempts into. Thank you!

hackthemack

Question for mermaid users out there. I have not used mermaid more than just superficially looking at it but it looks to me like a re-implementation of graphviz? Which has been around forever. Is there something it does that makes it more appealing? I am not knocking this Free Mermaid Diagram Editor either. Seems decent. But, similarly, edotor has been around forever. https://edotor.net/

thangalin

https://kroki.io/#try Shout out to Kroki, which offers Mermaid and many other text-based diagramming formats.

rdwrrr

Thanks for dropping this here. I have been frustrated for quite some time. I blindly followed the advice to learn some mermaid. Then I discovered that the ecosystem absolutely sucks.

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