Validate OpenAPI 3.x YAML or JSON. Syntax and semantic checks. Errors and warnings.
OpenAPI Validator: Validate OpenAPI 3.x YAML or JSON. Syntax and semantic checks. Errors and warnings. Useful as a pre-commit check to ensure data files meet format requirements before they reach CI. Your data stays local — the tool uses browser JavaScript and makes no network requests with your input. Free to use at HttpStatus.com, in the API Tools tools area.
No. OpenAPI Validator reports errors with exact positions but doesn't modify your input. Use it to find problems, then fix them yourself.
Client-side tools use your device's memory, so they handle up to several megabytes. Very large inputs may slow the tab.
No installation, works on any device, and results are shareable via URL. CLI tools are still better for CI/CD pipelines.