VizText

VizText is a browser-based diagram generator that turns a plain-language description into Mermaid code. It has two modes. Quick takes a single prompt and draws immediately, with no account.Chat runs a multi-turn conversation and asks clarifying questions before it draws, which suits diagrams where the structure isn't settled yet; Chat requires a free sign-in.

The generated Mermaid code sits next to a live preview and can be edited by hand — editing the code re-renders the diagram, so the tool works as a plain Mermaid editor as well as a generator. Supported types include flowcharts, sequence diagrams, class diagrams, ER diagrams, state diagrams, Gantt charts, architecture diagrams, UML and mindmaps. It can also generate diagrams from source code or from JSON.

Mindmaps render with Markmap and export to Markdown and OPML in addition to images. All diagrams export to SVG and PNG, or copy directly to the clipboard as an image for pasting into Notion, Slack or slides. Bitmap exports made without an account carry a small footer watermark, which signing in removes. Any diagram can be turned into a share link.

The interface and documentation are available in English and Chinese.