🔧 Developer Tool
JSON Tools
Format, minify, validate, compare and convert JSON ↔ CSV. All processing happens in your browser — nothing sent to server.
Input JSON
Output
Output will appear here...
How JSON Tools Work
Format, validate, minify and convert JSON data without leaving your browser.
1
Paste or Type JSON
Paste your raw JSON into the input editor — the tool accepts minified, pretty-printed, or even slightly malformed JSON.
2
Choose Your Action
Select Format (pretty-print with indentation), Minify (compact for production), Validate (check for errors), or Convert to CSV/YAML.
3
Copy or Download Output
The result appears instantly. Copy to clipboard or download as a file. Error line numbers are highlighted for easy debugging.
Frequently Asked Questions
What can I do with this JSON tool?
The tool supports: JSON formatting (pretty-print with 2 or 4-space indentation), minification (remove all whitespace for smaller payload size), validation with exact error line numbers, conversion from JSON to CSV (for tabular data) and YAML, and JSON tree viewer for nested data exploration.
Why is my JSON showing a validation error?
Common JSON errors include: trailing commas after the last item in arrays or objects, using single quotes instead of double quotes for keys and strings, missing quotes around object keys, and unescaped special characters like backslashes. The validator shows the exact line and character position of the error.
What is the difference between JSON format and minify?
Formatting (pretty-print) adds whitespace, line breaks and indentation to make JSON human-readable — ideal for debugging. Minifying removes all unnecessary whitespace to reduce file size — ideal for API responses, config files in production, and when transmitting data over a network.
Can I convert JSON to CSV?
Yes, if your JSON is an array of objects with consistent keys (e.g., from an API response or database export), the tool can convert it to a CSV table. Each object key becomes a column header. Nested objects are flattened or represented as strings.
Is my JSON data safe — does it get sent to a server?
No. All JSON processing happens entirely in your browser using JavaScript. Your data is never sent to any server, logged, or stored. You can safely use this tool with sensitive API responses, configuration data, or private JSON files.