JSON Formatter & Beautifier Online
Free online JSON formatter and beautifier. Paste ugly JSON and get it instantly formatted, indented, and validated.
JSON is everywhere — API responses, config files, database exports. But raw or minified JSON is nearly impossible to read. A JSON formatter (also called a JSON beautifier or JSON pretty printer) adds indentation and line breaks so you can understand the structure at a glance.
What Does a JSON Formatter Do?
A JSON formatter takes compact or messy JSON like this:
{"user":{"id":1,"name":"Rohith","roles":["admin","developer"],"active":true}}
And turns it into readable, indented JSON:
{
"user": {
"id": 1,
"name": "Rohith",
"roles": [
"admin",
"developer"
],
"active": true
}
}
Why Use DevConvert as Your JSON Formatter?
- **Instant formatting** — paste and convert in one click, no button hunting
- **Auto-detection** — recognises JSON automatically, no need to select a format
- **Validation included** — if your JSON has a syntax error, DevConvert highlights it
- **Multiple output formats** — format JSON, or convert it to YAML, CSV, XML, and more
- **No signup required** — 10 free conversions per day, no account needed
Common JSON Formatting Mistakes
**Trailing commas** — JSON doesn't allow commas after the last item:
{ "name": "Rohith", }
**Single quotes** — JSON requires double quotes for all strings and keys.
**Unquoted keys** — JavaScript allows `{name: "Rohith"}` but JSON requires `{"name": "Rohith"}`.
DevConvert detects and fixes these issues automatically where possible.
Use Cases for JSON Formatting
- Debugging API responses from Postman, curl, or browser DevTools
- Reading config files (package.json, tsconfig.json, .prettierrc)
- Formatting JSON logs from cloud providers (AWS CloudWatch, Datadog)
- Sharing structured data in bug reports or documentation
**Paste your JSON into DevConvert** and get it formatted, validated, and ready to use in seconds.