Format, validate & minify JSON instantly. No data sent to servers—completely private.
Formatted JSON will appear here...Our JSON Formatter is a comprehensive suite for developers to clean, validate, and optimize JSON data. Whether you need to beautify deep nested objects for readability or minify data for production use, this tool provides a secure, client-side environment for all your JSON needs.
Automatic indentation and syntax highlighting make scanning complex JSON structures effortless.
Strip whitespaces and newlines to reduce payload size for API calls and configuration files.
Convert arrays of JSON objects into CSV format instantly for spreadsheet analysis.
Input your raw JSON string into the left editor panel. It can even handle single quotes!
The tool immediately checks for syntax errors and provides helpful debugging messages.
Switch between "Formatted" and "Minified" views to see your data in different contexts.
Copy your formatted JSON to the clipboard or download the result as a file.
Yes! Your data never leaves your browser. All formatting, validation, and minification are done locally using JavaScript. We don't have a backend to store or even see your data.
Formatting (or 'beautifying') adds whitespace and indentation to make JSON human-readable. Minifying removes all unnecessary whitespace to reduce the character count, which is better for API responses and storage.
Yes, the tool will immediately highlight syntax errors and provide details on what's wrong, helping you fix your JSON structure quickly.
The tool can handle JSON files of several megabytes quite easily. However, extremely large files (50MB+) might cause your browser to lag during formatting.
Your data never leaves your browser. All processing is done locally on your machine, ensuring maximum security and speed. No server calls, no tracking, no risk.
Explore our complete suite of free online tools
Convert CSV to Excel and back with batch support and zero uploads.
Count words, characters, and sentences in real-time with reading time estimation.
Compare two text files or code snippets side-by-side. 100% private, browser-based diff tool with support for additions and deletions.
Convert images to Base64 instantly with full client-side privacy.