Free live Mermaid diagram editor with no signup required
Version control for creative work
Stage
Not given
Not given
Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: 5 projects and 2 GB of storage. Creator: $12 a month with 200 GB storage and unlimited projects. Pro: $24 a month with 500 GB storage. Team: $20 a month per person with 500 GB per person. Business: $35 a month per person with 1 TB per person. Paying yearly gets 2 months free on every paid plan
Key features
Live preview as you type
21 diagram types including flowcharts, sequence, class, state, ER, Gantt, git graph, mindmap and timeline
Two-way editing for flowcharts
SVG and PNG export
Share diagrams as URLs with embedded diagram content
Built-in template picker and cheatsheet
No account or signup required
Works entirely in browser with local storage
Open Mermaid Live Editor links
Mermaid v11 syntax support
Version tracking that keeps all iterations in order with the latest on top
Approval system tied to specific versions
Comments and feedback on each version
Size variants that track when they're out of date
Share links with customizable permissions for non-account holders
Team collaboration with @mentions and discussions
Import from Dropbox, Google Drive, or local computer
Support for 60+ file formats including PSDs, video, 3D models and RAW photos
Collections and search functionality
Original files kept at full size in all plans
What makes it different
No signup, paywall, or data collection required
Diagrams stay in your browser's local storage by default
Two-way editing that updates code when you edit the canvas
Live preview with no render button required
Clean SVG export for professional use in docs and slides
Never trains AI on your work and has no ads or cross-site tracking
Your work is always yours and remains accessible even if you stop paying
Built for individual creators first, teams can join later
Works alongside existing tools like Photoshop, Figma and Premiere without requiring changes to workflow
Automatically groups related files and understands which versions belong together
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