KERVONI · FREE TOOL
JSON Formatter & Validator
Validate, format or minify JSON without changing number tokens.
0 / 200,000 character limit
Free local processing. Input and output are not sent to a server.
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About this tool
Validate JSON syntax, format with two-space indentation or minify. Original number tokens, duplicate keys and string escapes are preserved. This tool does not repair JSON or flag duplicate keys.
Free without an accountLocal browser processingNo input upload
Frequently asked questions
What does JSON Formatter & Validator do?
Validate, format or minify JSON without changing number tokens.
Do I need an account?
No. This free tool can be used without creating an account.
Where is my input processed?
This tool processes its input in your browser. Tool input is not uploaded for processing. General site usage statistics are separate; see the privacy policy.