JSON Formatter
Format raw, unreadable JSON with customized indentation, optionally sort object keys alphabetically, and easily analyze syntactic errors with lines and column indications.
How to Format JSON
- Paste your raw, compact, or scrambled JSON script into the editor workspace.
- Configure your spacing level (e.g. 2 spaces, 4 spaces, or tabs) and sorting preference.
- Review the validated, beautifully indented output and copy or download the file.
Key Features
- Alphabetical Sorting: Recursively order object attributes to compare file properties.
- Diagnostic Line Highlighting: Instantly pinpoints line and column parsing faults.
- Custom Spacing Options: Support for tabs, double spaces, or extra spacious structures.
Common Use Cases
- Beautify scrambled API payloads, server response streams, and logging trails.
- Rearrange configurations, package settings, and JSON parameters for git commits.
- Debug nested parameters and missing brackets from configuration parameters.
Frequently Asked Questions
Does this tool send my JSON data to any backend server?
Absolutely not. All operations are processed entirely inside your local browser. None of your data is sent, stored, or cached on any server, ensuring complete developer privacy and data security.
What does the "Sort keys alphabetically" feature do?
It recursively goes through all objects inside your JSON structure and rearranges their key-value pairs alphabetically. This is extremely helpful when comparing or diffing two JSON payloads to see if they contain the same fields.
What indentation options are supported?
You can select either 2 spaces, 4 spaces, or tab character indentation depending on your team formatting guidelines or readability preferences.
What is JSON formatting?
JSON formatting is the process of converting raw, compact, or poorly-formatted JSON text into a clean, human-readable structured layout. It introduces line breaks, systematic spacing or tab indentation, and brace alignment to make complex data hierarchies instantly understandable.
How to format JSON online?
Simply paste or drop your raw JSON payload into our input editor. Choose your preferred indentation styling (2 spaces, 4 spaces, or tabs) and optionally enable key sorting. The tool instantly pretty-prints the result entirely in-browser, offline.
Common JSON errors
Typical JSON syntax mistakes include missing double quotes on object keys, using single quotes instead of double quotes, forgotten commas between items, trailing commas after the final element in an array or object, and mismatched closing brackets or braces.
JSON Formatter vs JSON Validator
A JSON Formatter concentrates on structural prettification, proper spacing, indentation presets, and custom key sorting for developer readability. A JSON Validator focuses strictly on parsing diagnostics, pinpointing the precise line numbers, columns, and structural specs where formatting fails RFC-8259 compliance.