UD5 Toolkit
OpenAPI to HTML Preview - Online Swagger UI Generator
Paste an OpenAPI YAML/JSON and render a static, readable API document. No server, pure browser‑based rendering.
Documentation & Writing Tools
3+ toolsGraphQL Schema to Markdown Docs - Online Generator
Paste a GraphQL SDL schema and get auto‑generated Markdown documentation. Perfect for API docs. All local.
Text to ASCII Drawing - Online Simple Diagrams
Create simple ASCII diagrams (arrows, boxes, trees) using a visual editor. Copy the plain text art. For comments and docs.