OpenAPI / Swagger Spec Viewer
JSON → API Documentation
Render OpenAPI 3.0 and Swagger JSON specifications into interactive API documentation.
About this tool
About OpenAPI / Swagger Spec Viewer
OpenAPI / Swagger Spec Viewer is a free, browser-based tool that lets you render OpenAPI 3.0 and Swagger JSON specifications into interactive API documentation. It supports JSON → API Documentation. Everything runs locally on your device, so your files are never uploaded to a server. There's no sign-up, no watermark, and no limit — just open OpenAPI / Swagger Spec Viewer, add your input, and get results instantly.
How to use OpenAPI / Swagger Spec Viewer
1
Paste OpenAPI Spec
Input JSON/YAML OpenAPI definition.
2
Inspect API Docs
Explore paths, HTTP methods, and summaries.
Key features
API Exploration
Inspect API endpoints and HTTP methods without launching Swagger UI.
100% Private
OpenAPI / Swagger Spec Viewer processes your data locally in the browser. Nothing is uploaded, tracked, or stored u2014 your files never leave your device.
Completely Free
Use OpenAPI / Swagger Spec Viewer as much as you want with no fees, no watermarks, and no hidden limits.
No Installation
OpenAPI / Swagger Spec Viewer runs in any modern browser. There's nothing to download, install, or configure.
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