Format, beautify, minify, and validate JSON data
Debugging API responses is a nightmare when the JSON is a single million-character line. The **JSON Formatter & Validator** is a developer's best friend. It takes ugly, minified JSON and turns it into a readable, indented structure. It also catches syntax errors before you deploy code.
Paste your raw JSON string into the input area.
Click "Beautify" to format or "Minify" to compact.
If invalid, see the error message indicating the line number.
Click the copy button to grab the processed JSON.
It uses the browser's native `JSON.parse()` and `JSON.stringify()` methods. **Validating**: Checks if the string adheres to strict JSON standards. **Formatting**: Adds 2-space indentation.
**Privacy**: Processing happens 100% in your browser. No data is sent to our servers. **Speed**: Instant feedback for syntax errors. **Accessibility**: Works offline once loaded.
**API Integration**: Inspecting payloads from Postman or Network tab. **Config Files**: Editing `package.json` or VS Code settings.
React state management for real-time validation without page reloads.
Use 'Minify' before pasting large JSON payloads into database fields to save space.
The error message usually points to the exact character where the syntax breaks.
Remember: Keys must be in double quotes in valid JSON!
