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Paste raw or minified JSON and get clean, indented output instantly. Choose 2-space, 4-space, or tab indentation. Sort keys alphabetically. Auto-fix common errors. Powered by the Monaco editor, the same engine behind VS Code.
Yes. Struct processes everything 100% in your browser. Your data never leaves your device — nothing is sent to any server. Most online tools send your data to their servers for processing. Struct is different: you can verify this by disconnecting your network and confirming the tool still works. Read our privacy policy for full details.
Paste your JSON into Struct's editor and it formats automatically. You can also click the Format button or press Shift+Alt+F. Choose between 2-space, 4-space, or tab indentation.
Yes. Struct can auto-fix common issues like trailing commas, single quotes, unquoted keys, and JavaScript comments before formatting. Click 'Fix All' when errors are detected.
Yes, completely free with no signup, no ads, and no data collection. All processing happens in your browser.