Does conversion happen automatically?

Yes — the output updates in real time as you type or paste JSON into the input area.

How are JSON errors reported?

If the input is not valid JSON, a red error banner appears with the message and the exact line and column number of the first syntax error.

What indentation options are available?

In Beautify mode you can choose 2 spaces or 4 spaces. Minify mode always removes all whitespace.

Is there syntax highlighting?

Yes — in the output panel, keys are shown in blue, strings in green, numbers in orange, and booleans/null in purple.

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JSON Minifier & Beautifier

Format JSON with syntax highlighting or strip whitespace to minify — with real-time validation and size stats.

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About this tool

Toggle between Beautify and Minify modes: Beautify formats your JSON with 2 or 4-space indentation and color-coded syntax highlighting; Minify removes all unnecessary whitespace for production payloads. Conversion happens in real time as you type. The tool reports the original size, output size, and percentage change, and any JSON errors are flagged with an exact line and column number.

How to use

1 Paste or type your JSON into the left input panel.
2 Click 'Beautify' to format with indentation and syntax highlighting, or 'Minify' to strip whitespace.
3 Check the size stats bar to see the original size, output size, and percentage change.
4 If there are errors, read the line/column hint in the error banner and fix the JSON in the input panel.

Frequently Asked Questions

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