JSON Debugger

Parse, fix, format, generate code, diff, and inspect JSON-like data instantly.

JSON Debugger is a high-performance, privacy-first Chrome extension for inspecting, formatting, repairing, comparing, and analyzing JSON. Work with JSON directly in your browser without switching between online tools. Whether you're debugging API responses, exploring network requests, or inspecting complex payloads, JSON Debugger provides a fast, developer-focused workspace. Features • Format and beautify JSON instantly • Repair invalid JSON with intelligent syntax fixing • Interactive tree view with collapsible nodes • Syntax highlighting for improved readability • Chrome DevTools panel for inspecting JSON network requests • Visual JSON diff with side-by-side comparison and highlighted changes • JSONPath search for filtering deeply nested data • Automatic JWT and Base64 decoding • Generate code from JSON, including: • TypeScript interfaces • Zod schemas • Go structs • Python Pydantic models • Convert URL query strings to JSON • Fetch remote JSON from URLs • Save JSON snippets locally for reuse • Floating formatter on raw JSON pages • Dark and light themes • One-click copy of formatted output • 100% local processing with no cloud services or data collection Privacy JSON Debugger processes all data locally in your browser. Your JSON is never uploaded to external servers, and no cloud processing is required. Fast, lightweight, and designed to make working with JSON easier, whether you're inspecting API responses, debugging applications, or transforming data.