JSON to Java
Generate Java DTOs and review validation-oriented API models.
JSON Diff
Compare two JSON payloads and highlight field-level differences
Paste two JSON documents side by side to see added, removed, and modified fields organised by path. Useful for response snapshots, regression reviews, and config audits.
Why plain string diff falls short
Running `diff` against JSON punishes whitespace changes, reordered keys, and shuffled arrays — noise that hides the actual contract change. Reviewers end up scanning through formatting to find one renamed field.
This tool parses each document and reports differences as paths like `$.user.addresses[0].city`. Key order is ignored, so only true value changes surface.
Where it shines
- API response snapshot comparison across deploys
- QA regression fixtures vs. live responses
- Config audits for Kubernetes, Helm, OpenAPI specs
- Data migration checks against before/after records
Tips
Arrays are compared by index, which is useful when order matters. For order-insensitive comparisons, sort the arrays before pasting.
For very large payloads trim to the sub-tree of interest before pasting — browsers will thank you.
Pairs well with
Jump to other JSON2Class utilities that naturally follow this one.
JSON to Kotlin
Review nullability and Kotlin data class structure quickly.
JSON to TypeScript
Turn API payloads into TypeScript interfaces for frontend work.
JSON Formatter
Format sample payloads before sending them back into the converter.