JSON Formatter & Validator
Paste your JSON data below to format, validate, and explore it with our interactive tree view. Makes debugging and reading complex JSON structures effortless.
Format, validate and beautify your JSON data with this free online tool. Improperly formatted files can lead to errors and readability issues. Professional developers use formatters to maintain code quality and consistency. Our tool supports Syntax highlighting.
How to Use JSON Formatter
Paste Your JSON Data
Copy and paste your JSON data into the input field, or upload a .json file using the file upload button.
Choose Formatting Options
Select your preferred indentation (2 or 4 spaces), enable/disable sorting of keys, and choose other formatting preferences.
Format and Validate
Click 'Format' to beautify your JSON. The tool automatically validates syntax and highlights any errors with detailed messages.
Explore with Tree View
Use the tree view to navigate complex nested structures. Click nodes to expand/collapse and see the hierarchical structure clearly.
Copy or Download Results
Copy the formatted JSON to clipboard or download it as a .json file. You can also switch between formatted and minified versions.
Common Use Cases
Format API responses and request payloads to make them readable during development and debugging.
Beautify and validate JSON configuration files for applications, ensuring proper syntax and structure.
Explore complex nested JSON data structures from databases, APIs, or data exports using the interactive tree view.
Create well-formatted JSON examples for documentation, tutorials, and code samples.
Tips & Tricks
Keyboard Shortcuts for Speed
Use Ctrl+Enter to format, Ctrl+M to minify, and Ctrl+T to toggle tree view. These shortcuts make formatting much faster.
Validate Before Using in Production
Always validate your JSON before deploying. Invalid JSON can crash applications or cause unexpected behavior.
Use Tree View for Complex Data
For deeply nested JSON with many levels, the tree view is invaluable for understanding the data structure at a glance.
Handle Large Files Efficiently
For files larger than 1MB, consider using the minified view first to improve browser performance, then switch to formatted view as needed.
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