About

Why we built JSON2Class

JSON2Class exists to remove friction in API contracts. Developers should not spend hours rewriting the same models. Copy a JSON response, press convert, and move on to real work.

The problem we saw

Teams were juggling JSON samples in tickets, spreadsheets, and chat threads. DTOs, interfaces, and docs often drifted apart, causing runtime surprises. We wanted a browser-only tool that keeps data local, generates code instantly, and outputs documentation in the same flow.

Principles we follow

Developer-first: no installs, just copy, convert, and continue.

Transparency: your JSON stays in the browser; nothing is uploaded.

Collaboration: Java, Kotlin, and TypeScript views help teams align on a single contract.

Documentation: Markdown tables are generated alongside code for fast reviews.

Where it helped

Common situations where JSON2Class saved time include onboarding new engineers to an existing API, sharing contracts with QA and product through Markdown tables, and creating typed fixtures for integration and UI tests.

What’s next

We plan to add more language templates, better docs, and features requested by the community. Feedback continues to shape the roadmap.