Data Tools
Free online data tools. Prettify JSON, validate JSON/YAML, merge CSV files. Runs in your browser.
Tools
Click any tool to get started — free, no signup required.
Data Conversions
Convert between data formats.
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CSV to ENV
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CSV to HTML
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CSV to INI
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CSV to JSON
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CSV to JSONL
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CSV to MD
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CSV to NDJSON
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CSV to ODS
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CSV to PDF
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CSV to QR
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CSV to SQL
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CSV to SRT
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CSV to TOML
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CSV to TSV
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CSV to TXT
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CSV to VTT
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CSV to XLSX
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CSV to XML
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CSV to YAML
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JSON to ASS
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JSON to CSV
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JSON to ENV
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JSON to HTML
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JSON to INI
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JSON to JSON5
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JSON to JSONC
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JSON to JSONL
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JSON to MD
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JSON to NDJSON
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JSON to ODS
Frequently Asked Questions
Is my data secure?
All data tools run entirely in your browser. Your files never leave your device.
What data formats are supported?
JSON, YAML, CSV, TSV, XML, and TOML.
Can I validate YAML syntax?
Yes, our validator checks YAML syntax and reports exact error locations.
How do I merge CSV files?
Upload 2+ CSV files. Our merge tool combines rows, optionally deduplicating by a key column.
Can I prettify minified JSON?
Yes, paste or upload your JSON and get properly indented, readable output.