OpenAPI Validator

Validate an OpenAPI document against the specification's schema and list what is missing or wrong.

  • 100% Free
  • No account required
  • Runs in your browser
  • No data is uploaded
Not saved automatically

Private to this browser, not a cloud backup. Saves expire 7 days after the last save. Avoid saving sensitive data on shared devices.

Saved OpenAPI Validator workspaces

Saved only on this device. Clearing browser data removes your workspaces. Expired saves are removed when this app next checks storage.

No saved workspaces for this tool yet.

No settings needed
JSON / YAML to Validation result

Input

Paste or edit your OpenAPI JSON, then click “Run tool”.

Type, paste or drop a file
JSON / YAML
Ln 1, Col 1Spaces: 2UTF-876 bytes

Output

Validation result (read-only).

Read-only
Text
Ln 1, Col 1Spaces: 2UTF-80 bytes
Ready when you arePaste your input, then press Run tool or ⌘ ↵