JSON Formatter
Format, minify, and validate JSON instantly in your browser
Status
—
Keys
—
Depth
—
Size
—
Security Note: All formatting is performed entirely in your browser. No data is sent to any server.
Working with JSON
JSON in authentication, APIs, and configuration
JWT Payloads
JWTs carry JSON claims — user identity, roles, scopes, and expiry. Formatting the decoded payload makes it easy to audit what's being asserted.
OIDC Discovery
OpenID Connect discovery documents are JSON objects. Formatting them reveals supported scopes, grant types, endpoints, and signing algorithms at a glance.
API Responses
Token introspection, userinfo endpoints, and error responses all return JSON. Use minify to compact payloads before storage or formatting to inspect them.
Building an auth service that returns JSON?
AuthAction provides standards-compliant OIDC and OAuth2 endpoints with well-structured JSON responses out of the box.