About This Tool
Documentation
What does this tool do?
An advanced JSON beautifier and syntax validator. Formats JSON with customizable indentation (2/4 spaces, tabs), recursively sorts object keys alphabetically, strips JSONC comments, auto-repairs common syntax errors (trailing commas, unquoted keys, single quotes), and provides exact error coordinates.
When should you use it?
Use this tool to clean up minified JSON, fix syntax errors in configuration files, standardize key ordering for git diffs, or format JSON before saving to databases.
Key Capabilities & Features
Highlights
Validate RFC 8259 JSON syntax with real-time error detection and precise line/column indicators
Format and beautify minified JSON with customizable 2-space, 4-space, or tab indentation
Auto-fix common JSON errors including trailing commas, unquoted keys, and single quotes
Integrated collapsible tree view for easy navigation of deeply nested data structures
Instant copy, minification toggle, and downloadable .json file export