Tiny Online Tools
Beautifully Format JSON for Readability
JSON from APIs, logs, or minified sources is often compressed into a single line or poorly indented, making it nearly impossible to read and debug. Trying to parse {"user":{"name":"John","email":"[email protected]","age":30,"address":{"city":"NYC"}}} mentally is painful. A few seconds with a formatter transforms it into clean, readable JSON that you can actually navigate.
This JSON Formatter instantly beautifies any JSON you paste, applying consistent indentation and line breaks. See your data structure clearly, spot nested objects and arrays easily, and debug faster.
Customize Your Format
Indentation Options: Choose between 2 spaces (compact), 4 spaces (readable), or tabs (if you prefer). Consistency matters when sharing formatted JSON with team members or embedding it in documentation.
Sort Keys: Toggle alphabetical sorting of object keys. This makes searching for specific fields easier and creates consistent output even if the source JSON has keys in different orders.
What You Get
A properly indented JSON document where:
- Every property appears on its own line
- Nesting is visually clear through consistent indentation
- Arrays and objects are easy to distinguish
- Data is immediately scannable
Real Developer Use Cases
API Response Debugging: Receive a JSON response from an API endpoint and can't read it? Paste it here, see the structure, and understand the response immediately.
Configuration File Review: Before deploying a JSON config, format it to ensure your edits are structured correctly. Catch missing quotes, misplaced commas, or structural issues.
Log Analysis: Extract JSON-formatted log entries from logs and format them for readability. When log aggregation tools output JSON, formatting makes the data usable.
Data Inspection: Working with a large JSON dataset? Format it, then copy sections for inspection, analysis, or sharing with colleagues.
Documentation: Include nicely formatted JSON examples in documentation. Readers can understand the structure at a glance.
Data Migration & Transform: When moving data between systems, format the JSON output to verify it's correct before shipping.
Validation Included
As a bonus, the formatter checks your JSON for syntax errors. If there's a problem, you get a clear error message pointing to the issue. Invalid JSON stays visible for manual debugging—the formatter won't silently fail.
Useful Metrics for Formatted Output
After formatting, see:
- Total number of properties (keys)
- Number of arrays in the structure
- Maximum nesting depth
- Total size in bytes
These metrics help you understand the complexity and scale of your JSON data.
One-Click Copy
Once formatted to your satisfaction, copy the output with a single click. Paste directly into your code, config files, or documentation.
Completely Local Processing
Formatting happens entirely in your browser. Your JSON never leaves your machine, so you can safely format API responses containing sensitive data, internal configurations, or private information.