- Paste your JSON data into the input area or click 'Load Demo' to try with sample data.
- The JSON will be automatically formatted and validated in real-time.
- Use the tree view to explore nested structures - click to expand or collapse nodes.
- Click 'Compress' to minify JSON for production use, or switch back to formatted view.
- Use the 'Copy' button to copy the result, or access your recent JSON from 'History'.
What is a JSON Formatter?
A JSON Formatter is a tool that transforms raw JSON data into a well-structured, readable format with proper indentation and line breaks. It also validates JSON syntax, highlights errors, and can minify JSON for production use.
Is JSON Formatter free to use?
Yes, JSON Formatter is completely free to use with no hidden costs or limitations. You can format, validate, and minify unlimited JSON data without any signup or subscription required.
Is my data safe with JSON Formatter?
Your data is completely safe. JSON Formatter processes everything 100% client-side in your browser. No data is ever sent to our servers, and your history is stored only in your browser's local storage.
What is the difference between formatting and compressing JSON?
Formatting adds proper indentation and line breaks to make JSON human-readable for debugging. Compressing removes all unnecessary whitespace to create the smallest file size, ideal for API payloads and production environments.
Can I use this tool as a JSON viewer for large files?
Yes, the tool features an interactive tree view perfect for exploring large JSON structures. You can expand and collapse nodes, view data types and array sizes, and navigate complex nested data with syntax highlighting.
How does the history feature work?
The history feature automatically saves your recent JSON inputs locally in your browser. You can access up to 50 entries, search through them, and reload any previous JSON with one click for quick access.
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JSON
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is based on a subset of JavaScript syntax but is language-independent.
JSON Schema
JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It describes the structure, constraints, and documentation of JSON data, enabling automated validation and documentation generation.
JSONPath
JSONPath is a query language for JSON documents that enables extracting and filtering data from complex JSON structures using path expressions similar to XPath for XML.