JSON Formatter
Free online JSON formatter, validator, and beautifier. Format, validate, minify, and beautify your JSON with our easy-to-use tool.
Input JSON
Output
Features & Tips
- ✨ Format JSON with custom indentation (2 spaces, 4 spaces, or tab)
- 🔍 Validate JSON syntax and structure
- 📦 Minify JSON by removing whitespace
- 📤 Upload JSON files directly
- 💾 Download formatted JSON
- 📋 Copy formatted JSON to clipboard
Complete Online JSON Tools Suite
Format, validate, and minify JSON data instantly — all in one secure, browser-based toolkit. Perfect for developers, QA testers, and data analysts working with APIs, config files, or structured data.
JSON Formatter & Beautifier
Transform unformatted or minified JSON into a clean, readable structure with proper indentation and syntax highlighting. Great for visualizing API responses and nested objects.
- Custom indentation: 2 spaces, 4 spaces, or tabs
- Collapsible tree view for nested JSON
- Copy or download beautified JSON instantly
- Handles large JSON files smoothly
Example: Paste JSON from https://api.github.com/users and view it in a formatted, color-coded layout.
JSON Validator
Validate your JSON in real-time to catch syntax or structure errors before deployment. Perfect for API developers and testers.
- Detects missing brackets and invalid syntax
- Shows detailed error with line/column info
- Supports schema validation
- Instant feedback as you type
Example: Identify errors like missing quotes in nested JSON structures in seconds.
JSON Minifier
Compress JSON for production by removing spaces, newlines, and comments — without changing the data.
- Smaller file sizes for faster transfer
- Preserves structure and accuracy
- Batch minify multiple files
- Option to restore formatted version
Example: Convert a 500KB JSON config to 200KB without losing precision — ideal for web APIs.
JSON Best Practices
Clean, consistent JSON ensures reliability and maintainability in your applications.
- Always validate before using JSON in production
- Use consistent key naming (camelCase or snake_case)
- Keep arrays and objects simple and predictable
- Minify JSON only for live environments