Mermaid editor
Write Mermaid and see it render instantly, with inline lint, autocomplete, and one-click fixes for common syntax errors. Then keep editing visually - the best of diagram-as-code and a real editor.
Step by step
Launch Atlas Diagram Studio and open the split-pane command bar where you can type Mermaid on the left and see the diagram on the right.
Type Mermaid syntax such as flowchart, sequenceDiagram, classDiagram, erDiagram, stateDiagram, or gantt. Inline lint and autocomplete guide you as you go.
The editor flags syntax errors and offers one-click fixes (like turning -> into --> or repairing quotes), then renders a clean, laid-out diagram.
Switch to the visual editor to drag shapes, then export to PNG, SVG, PDF, or keep the Mermaid source for version control.
Why Atlas Diagram Studio
Most online diagram tools are throwaway. This one has an AI engine, real-time collaboration, and lives inside the workspace where the rest of your work already is.
Write Mermaid for speed and version control, then switch to drag-and-drop when you want pixel control - no other tool makes you choose one or the other.
The editor validates Mermaid as you type and offers one-click fixes for the common mistakes, so a stray arrow or quote never blocks a render.
Not sure of the syntax? Describe the diagram in words and the AI writes valid Mermaid and renders it for you.
FAQ
Ready when you are
Atlas Diagram Studio makes every diagram - flowcharts, UML, ERDs, architecture, mind maps - with AI text-to-diagram and real-time collaboration, inside an all-in-one workspace. Start free.