About Us
Why I built a privacy-first JSON formatter, and who it's for.
Hi, I'm Deepak Kumar
Why I built this
I've spent years building and consuming REST APIs. JSON is everywhere — API responses, config files, auth tokens, internal service payloads. At some point I started noticing that most popular online JSON tools send your data to a server to process it. You can verify this yourself: open any of them, paste some JSON, and watch the Network tab in your browser's DevTools. A request goes out.
That's a real problem when you're working with JWT tokens, internal configuration values, or API responses that contain user data. During one integration I was debugging a payload with sensitive auth tokens and internal service identifiers. I wasn't willing to paste credentials into a random website and hope for the best. I ended up manually hunting for the syntax error in a plain text editor. That was the last time I wanted to do that.
JSON Formatter Hub runs entirely in your browser. Nothing is ever sent to a server — not because of a policy, but because there is no server. Every feature on this site is pure client-side JavaScript.
Who writes the content
I write everything on this site myself. Every guide is based on real errors I've encountered in code reviews, API integrations, and debugging sessions — and the real steps I took to fix them. There is no content team and no outsourced writing. My standard for every article: it must be actionable without needing to open another tab.
Get in touch
I read every message personally and respond within a few business days. This is a one-person project, so your feedback directly shapes what gets built next. If you've found a bug, spotted an error in a guide, or have an idea for something useful, I'd like to hear from you.