JSON Formatter
Validate JSON and make it easier to read with two-space indentation. Formatting runs locally in your browser.
Privacy & Security
All files are processed locally in your browser. Your data never leaves your device and is not uploaded to any server. We do not store, collect, or have access to your files.
How It Works
- 1
Paste or type your JSON data into the input field
- 2
Select Format JSON to validate the input
- 3
Read the indented result, or correct the reported syntax error and try again
- 4
Copy the formatted result; if clipboard access is unavailable, select the output and copy it manually
Use Cases
Debug API responses and validate JSON structure
Format minified or compressed JSON for readability
Validate JSON configuration files before deployment
Clean up and organize JSON data for documentation
Identify and fix JSON syntax errors quickly
Frequently Asked Questions
What happens if my JSON has errors?
The formatter displays a syntax error message. Correct the input and select Format JSON again.
Can I customize the formatting style?
The formatter currently uses two-space indentation. Other indentation styles and compact output are not available.
Does it work with large JSON files?
Formatting runs on your device, so large inputs can take longer or slow the page. Start with the portion you need to inspect.
Is my JSON data sent to a server?
No, all formatting and validation happens entirely in your browser. Your JSON data remains private and is never transmitted.
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