JSON Format & Validate
Paste JSON on the left. Format with 2-space indent, minify to a single line, or validate only. Parsing runs locally—nothing leaves your machine.
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Ready. Paste JSON and choose an action.
How to use. Paste JSON into Input. Format pretty-prints with 2-space indent; Minify collapses to one line; Validate checks parse errors. Results land in Output—use Copy output or Download when you’re happy.