Mermaid Viewer

Browser-based Mermaid diagram editor with live preview, AI generation, and multi-format export.

4.5 (4)

レビュー: Daniel Nikulshyn·更新 2026年5月

AI-Powered Diagramming No Install Browser-Based Mermaid Documentation Developer Tools

概要

Mermaid Viewer is a web-based editor for creating, previewing, and sharing diagrams written in Mermaid syntax. As you type or paste code, the live preview updates instantly, making it easy to iterate on flowcharts, sequence diagrams, class diagrams, Gantt charts, and other supported diagram types. An AI-powered generator helps users turn plain-language descriptions into working Mermaid code, which can then be refined manually in the editor. Finished diagrams can be exported to common formats for use in documentation, presentations, and technical specs without installing any local tooling.

主な機能

Live Mermaid code preview
AI-assisted diagram code generation
Support for multiple Mermaid diagram types
Export to image and vector formats
Browser-based editor with no installation
Shareable diagram output

ユースケース

Generate flowcharts from plain English

Describe a process in natural language and let the AI generator produce Mermaid code, then refine it in the live editor to get a working flowchart quickly.

Create diagrams for technical documentation

Build sequence diagrams, class diagrams, or Gantt charts in the browser and export them as images or vector files to embed in docs and specs.

Iterate on diagrams with live preview

Paste or edit Mermaid code and see the rendered output update instantly, making it easy to tweak structure and layout before sharing.

Share diagrams without local tooling

Produce shareable diagram output directly from the browser, useful for teams that want to collaborate on diagrams without installing Mermaid CLI or design software.

メリット & デメリット

メリット

Runs entirely in the browser with no setup
Live preview speeds up diagram iteration
AI generation lowers the Mermaid learning curve
Supports multiple export formats

デメリット

Requires familiarity with Mermaid syntax for advanced edits
AI output may need manual cleanup
Limited offline functionality
Fewer styling controls than dedicated design tools

レビュー

4.5

4件の評価の平均。

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Grace Okafor

Does the job

Pretty happy overall. Shareable diagram output just works and aI generation lowers the Mermaid learning curve. but no dealbreakers — I'd recommend it to a friend without hesitating.

Naomi Suzuki

Use it every day

Honestly didn't expect to like it this much. Live Mermaid code preview is exactly what I needed, and live preview speeds up diagram iteration. I do wish fewer styling controls than dedicated design tools, but I reach for it almost every day now and it just clicks.

Jamal Carter

Use it every day

Honestly didn't expect to like it this much. Support for multiple Mermaid diagram types is exactly what I needed, and supports multiple export formats. but I reach for it almost every day now and it just clicks.

Daniel Schmidt

Solid for our team

We rolled this out across the team last quarter and live preview speeds up diagram iteration. Export to image and vector formats fits neatly into how we already work, and browser-based editor with no installation removed a step we used to do by hand. Limited offline functionality, which is the main caveat, but it has held up under daily use.