JSON Formatter, Validator & Tree Viewer
Beautify, minify, validate, and explore JSON data. Convert to CSV, view as a collapsible tree, and compare JSON files. All processing happens in your browser — your data stays private.
Frequently Asked Questions
Yes, completely free. No signup required, no usage limits, no ads. Format and validate as many JSON files as you need, without any restrictions.
No. All formatting, validation, tree rendering, and CSV conversion happens entirely in your browser using JavaScript. Your JSON data is never sent to any server, never logged, and never stored anywhere. This makes it safe for sensitive data.
There is no hard file size limit. Performance depends on your device's memory and processing power. Most users can comfortably process JSON files up to 5-10MB. For very large files, consider using the minify function first to reduce size.
Yes! Click the "JSON to CSV" tab to convert arrays of objects into CSV format. The converter automatically detects column headers from your JSON structure and handles nested objects by flattening them with dot notation keys.
The tree view displays your JSON as an interactive, collapsible hierarchy. Click any arrow to expand or collapse nested objects and arrays. This is especially useful for exploring large or deeply nested JSON structures without scrolling through formatted text.
JSON Formatter, Validator & Tree Viewer
Beautify, minify, validate, and explore JSON data. Convert to CSV, view as a collapsible tree, and compare JSON files. All processing happens in your browser — your data stays private.
Frequently Asked Questions
Yes, completely free. No signup required, no usage limits, no ads. Format and validate as many JSON files as you need, without any restrictions.
No. All formatting, validation, tree rendering, and CSV conversion happens entirely in your browser using JavaScript. Your JSON data is never sent to any server, never logged, and never stored anywhere. This makes it safe for sensitive data.
There is no hard file size limit. Performance depends on your device's memory and processing power. Most users can comfortably process JSON files up to 5-10MB. For very large files, consider using the minify function first to reduce size.
Yes! Click the "JSON to CSV" tab to convert arrays of objects into CSV format. The converter automatically detects column headers from your JSON structure and handles nested objects by flattening them with dot notation keys.
The tree view displays your JSON as an interactive, collapsible hierarchy. Click any arrow to expand or collapse nested objects and arrays. This is especially useful for exploring large or deeply nested JSON structures without scrolling through formatted text.