Advanced JSON Formatter
Professional JSON tool with tree view, validation, diff mode, and advanced formatting options
The Advanced JSON Formatter is a professional-grade tool designed for developers who work with JSON data daily. Unlike basic formatters, this tool provides multiple viewing modes including an interactive tree view with collapsible nodes, syntax-highlighted code view, and raw text view. The tree view lets you explore complex nested structures visually, with type indicators showing whether each value is a string, number, boolean, null, array, or object.
Advanced features include real-time validation with detailed error messages, customizable indentation (2 spaces, 4 spaces, or tabs), minification for production use, and alphabetical key sorting. The search functionality lets you filter through large JSON files instantly, while the expand/collapse controls help you focus on specific sections. Hover over any node to see its full JSON path, and use the copy buttons to quickly grab values or paths.
The diff mode is perfect for comparing two JSON objects, highlighting additions, removals, and value changes with color-coded indicators. Statistics show you the structure at a glance - total keys, nesting depth, number of objects and arrays, and file size. Import JSON from files, export formatted results, and work with confidence knowing all processing happens locally in your browser for complete privacy.
Interactive Tree View
Explore JSON structure visually with collapsible nodes and type indicators for every value.
Syntax Highlighting
Color-coded JSON with distinct colors for keys, strings, numbers, booleans, and null values.
Real-Time Validation
Instant error detection with detailed messages showing exactly what's wrong with your JSON.
Multiple View Modes
Switch between tree, code, and raw views to see your JSON in the format that works best.
Format & Minify
Beautify JSON with custom indentation or minify for production with a single click.
Search & Filter
Find keys, paths, or values instantly in large JSON files with real-time filtering.
JSON Path Display
Hover over any node to see its full path, perfect for accessing nested values in code.
Diff Mode
Compare two JSON objects side-by-side with color-coded differences and detailed change tracking.
Sort Keys
Alphabetically sort all keys in your JSON for consistent formatting and easier comparison.
Statistics Dashboard
See total keys, nesting depth, object/array counts, and file size at a glance.
Import & Export
Upload JSON files directly or download formatted results for use in your projects.
Copy Anywhere
Copy entire JSON, individual values, or paths with dedicated copy buttons throughout.