Varento Tools
Free Developer Tools
Format JSON and convert CSV tables with local browser utilities.
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JSON Formatter
Format or minify JSON without rounding number tokens or dropping duplicate keys.
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CSV ↔ JSON Converter
Convert CSV and JSON both ways, with delimiter controls and a table preview.
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Choose the right tool
JSON Formatter validates and formats JSON while preserving its original tokens. CSV ↔ JSON Converter turns flat tables into records or records into delimited files, with header validation and a preview. Neither tool executes pasted code.
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Free tools, with clear limitations
No accounts, usage-count limits or watermarks. Files and text are processed by tool code on your device. Very large inputs still need browser memory, and each page documents its supported formats. Read how local processing works.