Text / JSON Diff
Compare two texts and see exactly what changed, line by line
Diff
+0 -0 = 0
The two texts are identical.
Security Note: All comparison is performed entirely in your browser. No data is sent to any server.
When to Use a Diff Tool
Common use cases in auth and API development
JWT Claim Changes
Compare token payloads before and after a scope or role change to verify exactly which claims were added, removed, or modified.
Config Comparison
Diff OIDC discovery documents, JWKS responses, or environment configs between staging and production to catch unintended differences.
API Response Drift
Paste the same API response from two different environments or versions to spot field renames, type changes, or missing fields that would break your client.
Consistent tokens and responses, every time
AuthAction's standards-compliant auth server issues predictable, well-structured JWT claims and API responses — no surprises between environments.