What is an OpenAPI Editor?

An OpenAPI Editor lets you design, edit, and validate OpenAPI 3.x specification files in YAML or JSON format with a live preview of your API documentation.

Is my OpenAPI spec data uploaded to any server?

No. All processing happens 100% in your browser. Your specification never leaves your computer, making this tool completely private and secure.

Can I import an existing OpenAPI spec?

Yes. You can import specs by pasting a URL, uploading a .yaml/.json file, or starting from a built-in template like Petstore 3.0.

OpenAPI Editor — Design, Validate & Preview OpenAPI 3.x Specs

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