.csv — Comma-Separated Values
Plain-text tabular data with values separated by commas — one of the simplest and most portable formats for exchanging data between spreadsheets, databases, and scripts.
CSV files are plain text and don't execute code on their own. Note that opening a CSV in spreadsheet software can occasionally trigger 'formula injection' if a cell starts with '=', '+', '-', or '@' — be cautious with CSVs from untrusted sources.
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Frequently asked questions
What is a .csv file?
Plain-text tabular data with values separated by commas — one of the simplest and most portable formats for exchanging data between spreadsheets, databases, and scripts.
Can I edit a .csv file?
Yes — .csv files are commonly editable with software such as Microsoft Excel.
Does having a .csv extension mean the file is safe?
No single extension can guarantee that. CSV files are plain text and don't execute code on their own. Note that opening a CSV in spreadsheet software can occasionally trigger 'formula injection' if a cell starts with '=', '+', '-', or '@' — be cautious with CSVs from untrusted sources. Always consider where the file came from, not just its name.