Server & DevOps
JSON Formatter & Validator
Format, beautify, validate and minify JSON in your browser — pinpoint syntax errors with the exact line and column, then pretty-print with your chosen indent or compress to one line. Nothing is uploaded; your data never leaves the page.
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The JSON Formatter & Validator instantly beautifies, validates and minifies JSON right in your browser. Paste an API response, a config file or a messy one-line blob and get clean, indented output — or, when there's a syntax error, the exact line and column where it breaks so you can fix it in seconds. Switch to minify to strip every space and newline for the smallest possible payload.
This free tool by Hosting Cambodia is built for developers, API integrators and anyone wrangling data files. Because everything runs locally in your browser, your JSON — which often contains keys, tokens or customer data — is never uploaded to a server. It stays private on your machine.
Frequently asked questions
Is my JSON uploaded anywhere?
No. All formatting, validation and minifying happen entirely in your browser using JavaScript. Nothing is sent to any server, so it's safe for sensitive data.
How does it show me where the error is?
When JSON fails to parse, the tool reports the exact line and column of the problem — a missing comma, an unclosed bracket or a stray quote — so you can jump straight to the fix.
What is the difference between beautify and minify?
Beautify adds indentation and line breaks so JSON is easy to read. Minify removes all unnecessary whitespace to make the file as small as possible for faster transfer — both keep the data identical.
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