JSON Formatter & Validator
Validate and reformat JSON. Invalid input gets a precise error message with the line and column so you can find the problem immediately. Valid input is pretty-printed or minified, with a structural summary of keys, depth and size. Everything happens in your browser.
About the JSON Formatter & Validator
Validate and reformat JSON. Invalid input gets a precise error message with the line and column so you can find the problem immediately. Valid input is pretty-printed or minified, with a structural summary of keys, depth and size. Everything happens in your browser.
This tool runs completely offline in your browser. Nothing you enter is uploaded, which makes it safe to use with sensitive values such as internal addresses or tokens.
Frequently asked questions
What does the JSON Formatter & Validator do?
Validate and reformat JSON. Invalid input gets a precise error message with the line and column so you can find the problem immediately. Valid input is pretty-printed or minified, with a structural summary of keys, depth and size. Everything happens in your browser.
Is the JSON Formatter & Validator free to use?
Yes. The JSON Formatter & Validator is completely free with no account, no signup and no usage limits for normal use.
Is my input sent to your servers?
No. The JSON Formatter & Validator runs entirely inside your browser using JavaScript, so nothing you type is transmitted to NetScanly or anyone else.