JSON Formatter
Format, minify, and validate JSON online. Clean up API payloads, logs, and configuration snippets directly in your browser.
INPUT
0 charsOUTPUT
0 charsUse cases
JSON formatter
Beautify compact or messy JSON into readable indentation for reviews, docs, API responses, and configuration files.
JSON validator
Parse JSON in the browser and show the parser error when the snippet is invalid.
JSON minifier
Compress formatted JSON into a smaller single-line payload when you need compact snippets for tests or transport.
Examples
Frequently Asked Questions
What happens if the JSON is invalid?+
The tool shows the parser error so you can find and fix the problem.
Is the JSON stored?+
No. Formatting runs in your browser only.
Related Tools
API preview
Endpoint
POST
/api/json/formatRequest
{
"json": "{"name":"OmniTool","active":true}",
"mode": "beautify"
}Response
{
"result": "{\n \"name\": \"OmniTool\",\n \"active\": true\n}"
}