Before
{"team":{"name":"Platform","services":["api","queue"],"healthy":true}}
What this tool does
The JSON formatter turns compressed or hard-to-read JSON into structured output with spacing and line breaks. It also helps you spot nesting issues before copying the result into code, documentation, or tickets.
Common use cases
- Inspecting API responses from REST or GraphQL endpoints.
- Reviewing webhook payloads in support tickets.
- Cleaning config files before code review.
- Sharing readable sample data with teammates or clients.
Before and after example
After
{
"team": {
"name": "Platform",
"services": [
"api",
"queue"
],
"healthy": true
}
}
Common JSON errors related to formatting
- Trailing commas that break parsing before formatting can run.
- Single quotes instead of double quotes around keys or string values.
- Missing braces or brackets that make nesting unclear.
- Unquoted keys copied from JavaScript objects into JSON.
How to use the formatter
- Paste raw JSON into the editor.
- Click Format JSON to pretty print the structure.
- If something fails, click Validate to inspect the syntax error.
- Copy the result or move to JSON Minifier when you need a compact version again.
Privacy note: Runs locally in your browser. Your JSON is not uploaded.
Related JSON tools
FAQ
What is the difference between formatting and validating JSON?
Formatting changes whitespace and indentation for readability. Validation checks whether the JSON syntax is actually valid.
Can I format large API responses here?
Yes. If the payload is especially long, the Large JSON Viewer page is a better fit for that search intent.
Does formatting change the underlying JSON values?
No. Formatting only changes the presentation of valid JSON, not the data itself.
What should I do if formatting fails?
That usually means the JSON is invalid. Validate it, then use Fix Invalid JSON or the Common JSON Errors article.