Katsuragi

At a glance

• Editor score
  7.3 / 10
• Pricing
  Open source
• Best for
  LLM-assisted text-based wireframing
• Paid from
  Free
• Facts checked
  20 Sep 2026

• Where it wins

  • Git-diffable .kui specifications support version-controlled UI work.
  • Exports wireframes to SVG, PNG, and HTML.
  • Works with Claude Code, Cursor, and Aider workflows.

• Where it doesn't

  • Focused on static wireframes rather than interactive prototypes.
  • Requires comfort with text-based specifications and CLI workflows.
  • Platform coverage beyond documented LLM CLI tools is limited.

Our verdict on Katsuragi

Katsuragi is an open-source command-line wireframe generator from En-Links LLC. It converts text-based .kui specifications into SVG, PNG, or HTML wireframes, giving developers, engineers working with AI coding assistants, and teams managing UI specifications in version control a structured way to describe interfaces. Its component set covers text, boxes, buttons, inputs, and image placeholders, while reusable layout syntax, grid systems, configurable ratios, gaps, padding, and built-in themes support more than a basic sketching workflow.

Its strongest fit is an AI-assisted, text-first process. Katsuragi is compatible with Claude Code, Cursor, Aider, and other LLM CLI tools, so interface definitions can sit alongside code and be reviewed as text. A browser live preview with auto-reload provides visual feedback while specifications change. The tool also converts static webpages into .kui wireframes and supports batch conversion, which broadens its value for teams documenting existing pages or processing multiple wireframes. Installation through npm or direct execution with npx keeps the workflow centered on developer tooling.

Katsuragi is most suitable for teams that prefer declarative UI descriptions, repository-based collaboration, and generated outputs over a visual drag-and-drop editor. Its export formats and webpage conversion make it useful for documentation, early layout exploration, and AI-assisted implementation planning. It is less suitable for product teams that need interactive prototypes, rich behavioral modeling, or a primarily visual design environment. Choose it when text-based specifications and LLM CLI compatibility are central requirements; consider another category tool when interaction design or broader platform coverage is the priority.

Your product? Our editors can test Katsuragi in depth and publish a review, labelled as paid · from $149/mo →

Katsuragi pricing

Katsuragi fact sheet

Katsuragi integrations

Katsuragi lists 3 integrations on its own site.

• Claude Code
• Cursor
• Aider

Alternatives to Katsuragi

• UX PilotA broad AI wireframing workspace that connects ideas, flows, prototypes, Figma, and code.9.4
• UizardA collaborative web tool for turning prompts, screenshots, and sketches into prototypes.9.2
• VisilyA collaborative AI wireframing workspace with strong prototyping and Figma workflows.9.1

See all Katsuragi alternatives →

Featured on iTechGuides

Katsuragi is listed in our AI Wireframe Generators directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/katsuragi/"><img src="https://www.itechguides.com/best/badge/katsuragi.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update