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FastAPI OpenAPI schema generation & Swagger UI customization: Add custom CSS, logo to /docs. Override schema info/tags, serve static files, production uvicorn. Benchmarks: Custom CSS adds 0.2ms latency. Code examples, pydantic models, swagger_ui_css_url. Keywords: 'fastapi custom swagger ui', 'fastapi swagger logo css', 'openapi schema customize fastapi', 'fastapi docs customization', 'swagger ui custom css fastapi'.
Mar 15, 2026