JSON Formatter

Format and validate JSON with proper indentation.

Upload JSONor drag a file here

Input

Output

Output will appear here.

2 spaces4 spacesTabs

How to use

1Paste JSON into the input, or upload a .json file — nothing leaves your browser.
2Click Format to validate and pretty-print it.
3Switch between Code, Text, and Tree views, then copy or download the result.

Is my JSON sent to a server?

No. Formatting happens entirely in your browser — your data never leaves your device.

Can it fix invalid JSON?

It will point out exactly where the syntax breaks — with line and column when possible — so you can fix it, but it won't guess your intent.

Check whether a block of JSON is syntactically valid.

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Remove whitespace from JSON to make it as compact as possible.

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Format and beautify XML with proper indentation.

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Check whether a document is well-formed XML.

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