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Paste JSON and get it back formatted, minified, or simply checked. When it doesn’t parse you get the line, the column and the offending line printed back — not “unexpected token at position 4173”. Everything runs in your browser.
Paste JSON above, or open a .json file.
Paste into the editor or open a file — everything you add stays in this tab, and you see exactly what the tool will work on before anything runs.
Your browser does all the work locally. Nothing is uploaded — what you paste never leaves this tab, so there’s nothing for anyone to store, scan, or leak.
Take the result to your clipboard or save it as a file. Close the tab and nothing of what you pasted remains.