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CSV to XLSX (styled)
CSV → a styled workbook: bold white header on a deep-violet fill, frozen header row, autofilter, 18-wide columns; numeric cells stored as numbers, text as text. A real styles.xml is written — not just data.
A little guidance. A better result.
How to use CSV to XLSX (styled)
Bold header on a violet fill, frozen row, autofilter, typed numeric cells — a real styles.xml.
Prepare your input
Choose CSV with a header row.
Use the workspace
Review the workbook data before export.
Check your result
Open XLSX and check the styled header, filter and frozen row.
Know the limits
Numeric-looking values are stored as numbers; verify identifiers with leading zeros before using the workbook.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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