Kappafy is a free, browser-based JSON explorer and mock API generator built for frontend developers, backend engineers, and anyone who works with JSON data regularly. It turns raw JSON into a visual, interactive experience.
Built by Michael Lip — Solo developer with 10+ years experience. 140+ PRs merged into open source projects including Google Chrome and Axios. $400K+ earned on Upwork with 100% Job Success. Creator of 20+ Chrome extensions.
Everything runs in your browser. Your JSON data is never sent to any server. No tracking, no data collection, no account required.
Built on open standards — learn more at json.org and MDN Web Docs.