Validate OpenAPI and Swagger specs for structure and required fields.
OpenAPI Validator helps developers validate openapi and swagger specs for structure and required fields without leaving the browser. Catch syntax errors, structural issues, and schema violations before they break production. The validator pinpoints the exact line and character where problems occur. Built with a client-side-only architecture: the tool loads once, then all processing is local. No telemetry, no server-side storage, no third-party calls. Available as part of the OpenAPI toolkit on HttpStatus.com — no signup, no installation, works on any modern browser.
Your application may enforce stricter rules like schema validation, required fields, or value constraints beyond basic syntax. This tool checks format correctness.
Syntax errors (missing brackets, trailing commas, unquoted keys), structural issues (type mismatches), and format-specific violations are all detected with line and column numbers.
Use the feedback option on HttpStatus.com or contact the team through the website. Bug reports with specific input examples are most helpful.
Yes. HttpStatus.com offers an Integrate API that provides programmatic access to many of these tools. Check the API documentation for available endpoints.
Yes. The tool is free for any use — personal, educational, or commercial. No attribution required.