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JSON Format, Minify & Correct

Paste JSON to make it readable, minify it or investigate a parsing error.

Pick the action that matches the problem

Hard to read
Use Format for indentation. Choose two or four spaces; the original field stays available for reference.
Too much space
Use Minify for compact JSON. This removes formatting, not properties or array entries.
Need a check
Validate & Analyze parses the input and reports its root type, nesting depth and counts of keys, objects, arrays and values.
Syntax error
Try Correct JSON only if you want a repair. Read the correction message and review the changed input before copying it.
What can correction safely repair?

It can handle selected problems such as trailing commas, an opening byte-order marker and clearly missing closing brackets. It does not invent missing values or resolve ambiguous data. Keep a copy of the original when the content matters.

Parsing uses JavaScript JSON rules. Duplicate object keys and numbers beyond JavaScript's safe integer range need special care; formatting is not a lossless text transformation for those inputs.

Check what changed between two JSON documents →