Format, validate, minify, compare, and explore JSON with real-time error detection, tree view, JSONPath queries, auto-fix suggestions, and schema generation. All processing in your browser, 100% private.
Remove all unnecessary whitespace to produce compact JSON for production use.
💾 Input JSON
📄 Minified Output
Original: --Minified: --
Reduction: --
Compare two JSON files to identify structural and value differences.
✓ 0 Added✗ 0 Removed✎ 0 Modified— 0 Unchanged
💾 JSON A (Original)
💾 JSON B (Modified)
🔀 Diff Results
Sort Keys:
Clean:
💾 Input JSON
📄 Sorted Output
Auto-generate JSON Schema (Draft 2020-12) from your data, or validate against a schema.
💾 JSON Data
📑 JSON Schema
✓ Ready
No inputSize: --Lines: --
⌫ 100% Local Processing
⚡ Features
Professional-Grade JSON Processing
Advanced formatting, validation, and analysis tools for developers and data professionals.
✨
Smart Formatting
Beautify JSON with configurable indentation (2/3/4 spaces or tabs), optional key sorting, and full syntax highlighting with color-coded types.
🔍
Real-Time Validation
Instant error detection with precise line and column references. Visual indicators pinpoint syntax issues, missing brackets, and structural problems.
🌳
Interactive Tree View
Collapsible node navigation with color-coded value types, item counts, and click-to-copy JSONPath. Search and filter to explore deep structures.
🔀
JSON Diff
Side-by-side comparison with semantic diff that ignores key order. Color-coded additions, removals, and modifications with navigation controls.
🔧
Auto-Fix & Repair
One-click fixes for common errors: trailing commas, single quotes, unquoted keys, and comments. Intelligent suggestions with instant apply.
📑
Schema Generation
Auto-generate JSON Schema (Draft 2020-12) from sample data. Validate existing JSON against a schema with detailed compliance reporting.
🔢
Sort & Clean
Sort keys alphabetically (A-Z or Z-A), remove duplicate keys, strip null values, and eliminate empty objects and arrays for cleaner data.
📊
Statistics & Analysis
Real-time stats on object, array, string, number, boolean, and null counts. Maximum nesting depth analysis and total key enumeration.
🔒
100% Private
All processing happens locally in your browser. Your JSON data is never transmitted to any server, ensuring complete data privacy and security.
❓ FAQ
Frequently Asked Questions
Paste your JSON data into the input editor on the Format & Validate tab, then click the Format button. The tool will automatically beautify your JSON with proper indentation and full syntax highlighting. You can also use the keyboard shortcut Ctrl+Enter to format instantly.
Yes, absolutely. All JSON processing happens entirely within your browser using JavaScript. Your data is never uploaded to any server, never stored remotely, and never accessible to anyone else. When you close the tab, your data is gone from memory.
Yes, switch to the Diff tab and paste your two JSON files into the side-by-side editors. Click Compare to see a detailed diff with color-coded additions (green), removals (red), and modifications (yellow). The semantic diff option intelligently ignores key order differences.
JSONPath is a query language for JSON, similar to XPath for XML. On the Tree View tab, use the JSONPath input to query specific data. For example, $.users[0].name retrieves the name of the first user. Click any node in the tree to copy its JSONPath automatically.
When the validator detects common fixable errors like trailing commas, single quotes instead of double quotes, unquoted keys, or JavaScript-style comments, it displays a Fix button next to each error. Click the button to instantly apply the correction and re-validate your JSON automatically.
The Schema tab generates JSON Schema conforming to Draft 2020-12, the latest standard. It infers types, required fields, and constraints from your sample data. You can also validate existing JSON against any provided JSON Schema for compliance checking.