In the world of modern web development, JSON has become the de facto standard for data exchange between frontend and backend systems. Whether you’re building APIs, integrating third-party services, or handling configuration files, it’s essential to format and validate JSON quickly and accurately. That’s exactly why I built json.bij.app — a fast, minimal, and developer-friendly online tool to format and validate JSON with simplicity and speed.

Why I Created json.bij.app

As a developer and DevOps engineer with over a decade of experience, I often found myself needing a clean, distraction-free tool to format and validate JSON. Unfortunately, most existing tools on the web are overloaded with ads, sluggish, or have outdated interfaces.

json.bij.app is my response to that frustration:

  • 🚫 No ads
  • ✨ Minimal, distraction-free interface
  • 🌐 100% free and open-source
  • ⚡️ Fast and lightweight (even on large JSON files)
  • 🧩 Built with modern technologies like Next.js 15 and Tailwind CSS

What You Can Do with json.bij.app

  • ✅ Format (beautify) JSON with smart indentation
  • ✅ Minify JSON for optimized payload size
  • ✅ View JSON in an interactive, collapsible tree structure
  • ✅ Instantly validate and highlight syntax errors
  • ✅ Support dark/light themes for better readability
  • ✅ Completely client-side — no data is stored or sent to servers

What Makes It Different?

Unlike bloated tools, json.bij.app focuses on performance and developer ergonomics. It uses the latest Next.js App Router with React Server Components for speed and minimal hydration. Syntax rendering and validation are powered by open libraries like react-json-view, tailored into a seamless experience.

Also, the platform is fully open-source, available on GitHub, and welcomes contributions and forks. Whether you’re building internal tools or embedding a formatter into your own app, you can freely adapt it.

Who Is This For?

  • Frontend & Backend Developers
  • API Designers using Postman, Hoppscotch, or Swagger
  • DevOps engineers reviewing logs and config files
  • Educators and technical writers presenting JSON examples
  • Anyone working with structured data on a regular basis

Part of a Bigger Vision

json.bij.app is part of a broader ecosystem I’m building under the bijanbiria.com brand — a collection of clean, useful, and open tools made for developers. Think of it as a developer utility suite that you can rely on.

In the near future, expect to see more tools at subdomains like:

  • jwt.bij.app: Decode and verify JWT tokens
  • url.bij.app: Encode, decode, and parse URLs
  • tools.bij.app: A dashboard of useful microtools

Each of these tools will follow the same philosophy: minimal, fast, open, and developer-first.

Try It Now

If you ever need a no-frills, fast JSON formatter — give json.bij.app a try.

🔗 Launch it here: https://json.bij.app
✉️ Reach out with feedback: https://bijanbiria.com/contact

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