JSON Formatter & Validator
Beautify, minify, validate, and auto-fix invalid JSON. Features Tree View, Syntax Highlighting, and CSV/YAML converters.
Drag & Drop a .json file here, or click to browse
Why Use Our JSON Formatter?
The most reliable online JSON tool with smart auto-fix, interactive tree view, and multi-format conversion.
Smart Auto-Fix
Automatically repair common JSON errors like trailing commas, single quotes, and missing brackets with one click.
Interactive Tree View
Visualize complex JSON structures with a collapsible tree view. Expand or collapse nodes to navigate easily.
Multi-Format Converter
Instantly convert your JSON data to CSV for Excel or YAML for configuration files without leaving the page.
Syntax Highlighting
Read JSON effortlessly with color-coded keys, strings, numbers, and booleans, just like a professional code editor.
100% Client-Side Privacy
Your sensitive API responses and data never leave your browser. Completely secure and private processing.
Data Statistics
Get instant insights into your JSON, including total keys, arrays, max depth, and file size at a glance.
Frequently Asked Questions
JSON formatting (or beautifying) is the process of converting minified, hard-to-read JSON into a structured, indented format. This makes it easier for developers to read, debug, and understand complex data structures.
Our Smart Auto-Fix feature automatically detects and repairs common JSON errors like trailing commas, single quotes instead of double quotes, and JavaScript comments. It attempts to parse the JSON again after fixing these issues.
Yes, absolutely! This tool runs entirely in your browser using client-side JavaScript. Your JSON data is never sent to our servers or any third party, making it 100% secure for sensitive data.
Simply paste your JSON in the input box. Once formatted, click on the "CSV" or "YAML" tabs in the output section. The tool will automatically convert your JSON structure into the selected format, which you can then copy or download.