JSON Studio

A modern, privacy-first JSON formatter, viewer, validator and developer utility. All processing happens locally.

# JSON Studio — JSON Formatter, Viewer, Validator & Editor **Format, validate, repair, and explore JSON in one powerful workspace.** JSON Studio is a free, open-source Chrome extension built for developers, API testers, and anyone working with JSON data. Unlike basic JSON formatters, JSON Studio includes an **Integrity Report** that detects duplicate keys and precision-risk numbers before they cause unexpected data loss. Everything runs locally in your browser. No accounts, analytics, ads, or tracking. ## KEY FEATURES **🔍 JSON Integrity Report** Detect potential data integrity problems that traditional JSON formatters may overlook: - Duplicate property names that could be lost during re-serialization - Large numbers that may lose precision in JavaScript - Exact JSON Pointer paths to affected properties - Clear integrity summaries for every document **✨ JSON Formatter & Minifier** Beautify messy JSON or compress it into a compact format with one click. - Customizable 2-space or 4-space indentation - Lossless formatting to preserve numeric representations, string escapes, and key order - Copy or export formatted and minified JSON **🌳 Interactive JSON Tree Viewer** Explore deeply nested JSON objects and arrays with an interactive tree. - Expand and collapse individual nodes - Search keys and values - Copy values, subtrees, and JSON Pointer paths - Keyboard navigation - Virtualized rendering for large documents **✅ JSON Validator & Error Highlighting** Find syntax errors quickly with precise error reporting. - Line and column information - In-editor error highlighting - Detection of missing commas, trailing commas, invalid escapes, and malformed structures - Live validation while editing **🔧 Automatic JSON Repair** Fix common JSON formatting problems, including: - Trailing and missing commas - Missing colons - Single and smart quotes - JavaScript-style comments - Python literals such as True, False, and None JSON Studio uses structure-aware repair and avoids silently guessing when a document is ambiguous. **💻 Three JSON Viewing Modes** - Tree View — Explore JSON interactively - Code View — Read syntax-highlighted JSON with line numbers - Raw View — Inspect the original JSON text **📁 Import, Export & Page Inspection** - Import JSON files through drag-and-drop - Export formatted or minified JSON - Inspect JSON API responses and JSON pages directly from your browser - Search across JSON keys and values - Generate TypeScript types from JSON data **🎨 Customizable Developer Workspace** - Light, Dark, and System themes - Adjustable indentation - Word wrapping - Customizable default view - Live document statistics ## PRIVACY FIRST. COMPLETELY FREE. Your data stays in your browser. ✓ No accounts or registration ✓ No analytics or tracking ✓ No advertisements or subscriptions ✓ No remote processing of your JSON ✓ No unnecessary website permissions ✓ Open-source and publicly auditable JSON documents are processed locally. Page inspection occurs only when you explicitly request it. ## BUILT FOR DEVELOPERS JSON Studio is built with TypeScript and Chrome Manifest V3, with automated unit, component, end-to-end, and performance tests. Whether you're debugging API responses, inspecting large JSON files, validating configuration data, or checking data integrity, JSON Studio brings the tools you need into one workspace. **Install JSON Studio and make working with JSON faster, safer, and easier.** Open source on GitHub: https://github.com/vinze01/JSON-Studio