DEVELOPER TOOL · FREE & PRIVATE
JSON Formatter
Validate, format and minify JSON locally.
✓ Free to use✓ No sign-up✓ Runs in your browser
JSON Formatter
Validate, format and minify JSON locally.
QUICK GUIDE
How to use JSON Formatter
Validate, format and minify JSON locally. Choose your options above and use the available action to get your result.
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GOOD TO KNOW
Frequently Asked Questions
Can this tool identify invalid JSON?
Yes. The formatter validates input syntax and reports errors when the JSON cannot be parsed.
What is the difference between formatting and minifying JSON?
Formatting adds indentation and line breaks for readability; minifying removes unnecessary whitespace.
Why are single quotes rejected in JSON strings?
Standard JSON requires double quotes around strings and object property names.
Can I use the formatted output with an API?
Yes. Valid formatted JSON remains JSON; check the receiving API's schema and required fields separately.