API & OpenAPI utility

OpenAPI Version Checker

Identify an OpenAPI version and report whether this toolset checks its version family.

● This tool runs entirely in your browser. Your input is never uploaded to our servers.

OpenAPI YAML or JSON

Output

Your result will appear here…

How to use OpenAPI Version Checker

Paste an OpenAPI YAML or JSON document.
Select Check Version to inspect its version string.
Use a version-aware validator for complete compatibility checks.

Example

Input:

openapi: 3.1.0
info:
  title: Example API
  version: 1.0.0
paths: {}

Output:

OpenAPI 3.1.0 detected. Version family: 3.1.
This is a version check only; full schema compatibility is not validated.

Use cases

Identify the specification version in a file.
Check whether a document uses the project's supported version families.
Spot Swagger 2.0 documents before conversion.

About this tool

Identify an OpenAPI version and report whether this toolset checks its version family. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.

Frequently asked questions

Which versions are recognized as supported?

This check recognizes OpenAPI 3.0.x and 3.1.x; other versions are reported as outside this check's range.

Does it validate version-specific keywords?

No. It checks the version string only and does not validate the complete version schema.

Is a remote service used?

No. The version string is checked in your browser.