Generate Swagger UI / OpenAPI specs from a simple description. Enter title, version, and endpoints to produce a complete spec JSON. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Generate mock endpoints from OpenAPI specs — example responses shaped for immediate frontend work, no backend wait while real backends are still being built.
Basic structural check for OpenAPI/Swagger specs — required top-level fields, non-empty paths, and $ref presence. A heuristic screen, not a full spec validation: passing here does not guarantee a valid spec.
Generate Markdown API documentation from OpenAPI specs with endpoints and examples. Publish clean reference docs fast — local conversion, free, no signup.
Generate PDF documents from plain text, CSV tables, JSON data, or XML content. Includes customizable title, font size, and table formatting for the CSV mode.
Generate complete meta tag blocks — title, description, Open Graph, Twitter Cards, canonical — from one form. Ship correct head markup per page — free, local, copy-paste.
A complete OpenAPI 3.0 spec JSON file with info, servers, paths, and schemas. Enter your API title, version, and endpoints to produce a ready-to-use specification.
Yes. For each endpoint, define the HTTP method, path, request body schema, response schemas, and status codes.
The output is an OpenAPI spec JSON that can be loaded into Swagger UI, Redoc, or any OpenAPI-compatible documentation tool.
Enter your endpoints manually. For existing APIs, describe each route and its parameters. The tool structures it into valid OpenAPI format.
No. All generation happens locally in your browser. No API data is transmitted.
OpenAPI Validator
Basic structural check for OpenAPI/Swagger specs — required top-level fields, non-empty paths, and $ref presence. A heuristic screen, not a full spec validation: passing here does not guarantee a valid spec.
OpenAPI Documentation Generator
Generate Markdown API documentation from OpenAPI specs with endpoints and examples. Publish clean reference docs fast — local conversion, free, no signup.