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I built a free online Mermaid diagram editor with storage/sharing

Hey everyone đź‘‹

I’ve been working on a side project called Everything Mermaid — it’s a free, browser-based Mermaid diagram editor that lets you write, preview, and share Mermaid diagrams without installing anything.

I built it because I use Mermaid constantly for architecture and documentation, and I wanted something that felt more like a “repo + editor” instead of just a scratchpad. That... and I wasn't a fan of paying just to save and share diagrams on other sites.

What it does:

  • No login required to try it, just to save/collab/share.
  • Live Mermaid editor (flowcharts, sequence, ER, Gantt, etc.)
  • Shareable diagram links
  • Save/manage diagrams in one place

Link: https://everything-mermaid.com

I’m not trying to sell anything — I genuinely want feedback from people who actually use Mermaid:

  • What feels clunky?
  • What’s missing?
  • Would you trust this over Mermaid Live or local tooling?

If this kind of tool would be useful for you, I’d love to know what would make it a “daily driver.”

Thanks for taking a look 🙏

Top comments (1)

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artydev profile image
artydev

Great, Thank you :-)