JSON Formatter

All-in-one JSON toolkit. Format, validate, convert, and test APIs—all in your browser.

Features

• Format & Validate - Beautify, minify, and validate JSON with real-time error detection
• Convert - Transform between JSON, CSV, XML, and YAML
• Tree View - Interactive visualization of nested structures
• Diff - Compare two JSON files side-by-side
• API Testing - Test REST endpoints with request/response formatting
• WebSocket - Connect and test WebSocket connections
• GraphQL - Query playground with schema exploration
• Performance - Benchmark API response times
• Search - JSONPath queries to find data quickly
• Share - Generate shareable URLs (state stored in URL)

Quick Start

# Install dependencies
pnpm install

# Run dev server
pnpm dev

# Build for production
pnpm build

Requires Node.js 18+.

Tech Stack

Next.js 15 · React 19 · TypeScript · Tailwind CSS · shadcn/ui

Privacy

All processing happens locally in your browser. No data is sent to any server.

---

Built by Arihant Jain · Spectrum UI