Format, beautify, minify, and validate JSON data instantly. Syntax highlighting, error detection, and one-click copy make this the ultimate free JSON tool for developers and data professionals.
Copy your raw, minified, or malformed JSON data from APIs, config files, or databases and paste it into the textarea above.
Click Beautify to format with proper indentation, Minify to compress, or Validate to check for syntax errors. Adjust indent size and key sorting as needed.
Copy the formatted JSON to your clipboard with one click, or download it as a .json file for use in your project.
APIs often return minified JSON that is impossible to read. Paste the response into our formatter to get beautifully indented, readable data with proper hierarchy and syntax highlighting.
Package.json, tsconfig.json, and other config files need proper formatting for readability. Use our tool to beautify messy config files before committing to version control.
Missing commas, trailing brackets, and quote errors are common in JSON. Our validator pinpoints the exact line and position of errors, making debugging fast and straightforward.
MongoDB exports and NoSQL database dumps often produce unformatted JSON. Our tool beautifies the output, making it easy to inspect, search, and understand the data structure.
JSON is formatted, validated, and minified in milliseconds with no server round-trips, no waiting, purely client-side processing.
Invalid JSON is caught immediately with clear error messages showing the exact position and type of syntax error.
Optionally sort object keys alphabetically for consistent, predictable output essential for diff comparisons and code reviews.
All processing happens in your browser. Your JSON data is never sent to any server complete confidentiality guaranteed.
Beautify (or pretty-print) adds indentation, line breaks, and spacing to make JSON human-readable. Minify removes all unnecessary whitespace, line breaks, and indentation to produce the smallest possible JSON string. Beautified JSON is great for debugging and editing, while minified JSON is used in production to reduce file size and improve load times.
The most common errors include: trailing commas after the last property in an object or array, missing commas between properties, using single quotes instead of double quotes, unquoted keys, comments (which are not valid in standard JSON), and mismatched brackets or braces. Our validator catches all of these and shows the exact line and position of each error.
Yes, our formatter handles large JSON files efficiently since processing happens entirely in the browser. Files up to several megabytes work smoothly. However, extremely large files (50MB+) may cause temporary browser slowdowns due to memory constraints. For files this large, consider using command-line tools like jq or processing them in chunks.
No. JSON (JavaScript Object Notation) is a data interchange format inspired by JavaScript object syntax, but with stricter rules. JSON requires double quotes for all keys and string values, does not allow comments, trailing commas, or functions. JavaScript objects can have unquoted keys, single quotes, functions, and undefined values. JSON is a subset of JavaScript object syntax.
When enabled, Sort Keys Alphabetically reorders all object properties in alphabetical order. This is useful for creating consistent output for diff comparisons (so changes in value, not key order, are highlighted), ensuring consistent API responses, and making large JSON objects easier to navigate. Nested objects are also sorted recursively.
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