Skip to main content
L
Loopaloo
Buy Us a Coffee
All ToolsImage ProcessingAudio ProcessingVideo ProcessingDocument & TextPDF ToolsCSV & Data AnalysisConverters & EncodersWeb ToolsMath & ScienceGames
Buy Us a Coffee
  1. Home
  2. Document & Text
  3. JSON Formatter & Validator
Add to favorites
Loading tool...

About JSON Formatter & Validator

The JSON Formatter & Validator is a powerful tool for working with JSON data. Format messy JSON into readable, indented code, validate JSON syntax, minify for production, and explore complex data structures with an interactive tree view. All processing happens in your browser for complete privacy.

How to Use

  1. 1Paste your JSON data into the input area or upload a JSON file
  2. 2The tool automatically validates and formats your JSON
  3. 3Use the tree view to explore nested data structures
  4. 4Apply JSONPath queries to extract specific data
  5. 5Copy formatted output or download as a file

Key Features

  • Auto-format with customizable indentation (2, 4 spaces or tabs)
  • Real-time syntax validation with error highlighting
  • One-click minification for production use
  • Interactive tree view for exploring complex JSON
  • JSONPath query support for data extraction
  • Schema validation against JSON Schema
  • Compare and diff two JSON objects
  • Sort keys alphabetically
  • Syntax highlighting with multiple themes

Common Use Cases

Debugging API responses during developmentFormatting configuration files for readabilityValidating JSON before sending to APIsExploring large JSON datasetsMinifying JSON for web applications

Frequently Asked Questions

What happens if my JSON is invalid?

The validator highlights exactly where the error is, showing the line number and describing what's wrong (missing comma, unmatched bracket, etc.).

Can I format large JSON files?

Yes, the tool handles large JSON files efficiently. For very large files (50MB+), processing may take a few seconds depending on your device.

What is JSONPath?

JSONPath is a query language for JSON, similar to XPath for XML. It lets you extract specific values from JSON using expressions like $.store.book[0].title

Privacy First

All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.

You might also like

XML Formatter & Tools

Format, validate XML with XPath queries, interactive tree view, XML-to-JSON conversion, and multiple color themes

YAML Formatter & Converter

Format, validate, and convert between YAML and JSON formats. Live validation, syntax highlighting, and bidirectional conversion.

Code Minifier & Beautifier

Minify or beautify code in 7 languages: JavaScript, TypeScript, CSS, HTML, JSON, XML, SQL with compression visualization