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 ARROW
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CSV to DOCX
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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 PARQUET
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CSV to PDF
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CSV to PPTX
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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 XLSX
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CSV to XML
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CSV to YAML
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JSON to BSON
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JSON to COMPOSE
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JSON to CSV
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JSON to DOCX
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JSON to ENV
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JSON to GITHUB-ACTIONS
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JSON to HCL
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JSON to INI
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JSON to IPYNB
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.