Developer Tools
JSON Formatter & Validator
Format, minify and validate JSON directly in your browser.
Use this tool to clean up compact JSON, reduce formatted JSON to a single line, or quickly confirm whether a JSON payload is valid.
Formatter
Format, minify, and validate JSON locally in your browser.
Output
// Formatted JSON will appear here.How to use
- 1. Paste JSON
Add any JSON object, array, or value to the input field.
- 2. Format or minify
Choose formatted output with two-space indentation or compact minified output.
- 3. Copy the result
Copy valid JSON for use in code, docs, payloads, or config files.
Example
The formatter parses the input first, so invalid JSON produces a clear error instead of a misleading output.
{
"name": "ToolRivet",
"tools": [
{ "title": "JSON Formatter & Validator", "available": true }
]
}// chap. 05 — FAQ
Frequently asked.
Answers to the questions people search for most when looking for free, private developer utilities.
/* indexed.txt */ - free for everyone - no cookies - input stays local - public roadmap
01 Is my JSON uploaded to a server? +
No, formatting and validation run locally in your browser.
02 Can I minify JSON? +
Yes, you can format or minify JSON with one click.
03 Does it validate invalid JSON? +
Yes, invalid JSON shows a clear error message.