How to Format JSON for Better Readability
Learn how JSON formatting works, how to spot common syntax errors, and how to format JSON safely in your browser.
DATA · CLIENT
Format and validate JSON online
Paste compact or hard-to-read JSON to turn it into clean, indented output. Invalid input is identified before you copy the result.
How to format JSON
- Paste JSON into the input field.
- Select Format JSON to validate and indent it.
- Review the output, then copy it when you are ready.
JSON formatting example
Input
{"name":"Soul","active":true}Output
{
"name": "Soul",
"active": true
}Frequently asked questions
Is my work saved automatically?
Your input and formatted result are cleared when you refresh or close the page.
Does the formatter change values?
No. It changes whitespace and indentation only. Property values and array order remain unchanged.
Why is my JSON invalid?
Common causes include trailing commas, missing quotation marks, comments, or mismatched braces and brackets.