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Free Excel, CSV and JSON Tools
Convert and clean the first worksheet of a supported CSV or XLSX file. Review identifiers, column headers and row counts before using the result in another system.
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Before you start
- Use unique non-empty column headers when exporting JSON. Merge files only when their headers match.
- Leading zeros are kept as text. Formula-looking CSV values are escaped to reduce spreadsheet formula injection.
- Use a phone or mobile header for Indian number formatting. Data-row, column and PDF table limits are enforced.