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JSON formatter and validator

Validate, format, minify and explore JSON locally.

About this tool

How do I use this tool?

Validate, format, minify and explore JSON locally.

What should I check before using the result?

JSON is parsed as data, never executed. Large integers are preserved by a lossless tokenizer when formatting; tree view displays their original literal text.

Worked example

Format a JSON number such as 900719925474099312345 without changing its original digits.

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Documentation updated