Paste an OpenAPI or Swagger spec and view it as interactive API documentation in seconds. No account, no install. Every render gets a shareable link.
Your rendered API docs will appear here
Paste a spec and click Render docs, or try the sample.
Raw OpenAPI files are hard to read. This online OpenAPI viewer turns a JSON or YAML spec into browsable reference docs: endpoints grouped by tag, request parameters and bodies, response schemas, examples, and generated code snippets. It works with OpenAPI 3.2, 3.1, 3.0 and Swagger 2.0 files, and you never have to create an account to use it.
Yes. Viewing a spec is free and needs no sign-up. Paste, upload, or link a JSON or YAML file and the documentation renders immediately. An account is only needed if you want to publish the docs on a permanent URL.
OpenAPI 3.2, 3.1 and 3.0 are supported, as well as Swagger 2.0. The version is detected from the spec, so there is nothing to configure.
Yes. Every render gets a private, unguessable link that you can send to teammates. The link stays live for 48 hours; publish the docs for free if you need a permanent URL.
The viewer only renders specs that pass validation. If yours has errors, they are listed next to the editor; the OpenAPI Validator shows each one with its line number and a suggested fix.
It covers the same need — reading a spec as browsable docs — without installing or hosting Swagger UI. You get endpoint navigation, request and response schemas, examples and code snippets from a single paste.
To render the documentation, the spec is saved as a temporary preview that expires after 48 hours. It is not listed anywhere and can only be reached through its link.