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    Upvotes795Top Answeredited Oct 7, 2021 at 7:34

    RFC 7111

    There is an RFC which covers it and says to use text/csv.

    This RFC updates RFC 4180.

    Excel

    Recently I discovered an explicit mimetype for Excel application/vnd.ms-excel. It was registered with IANA in '96. Note the concerns raised about being at the mercy of the sender and having your machine violated.

    Media Type: application/vnd.ms-excel

    Name Microsoft Excel (tm)

    Required parameters: None

    Optional parameters: name

    Encoding considerations: base64 preferred

    Security considerations: As with most application types this data...

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  2. Stack Overflow
    https://stackoverflow.com/questions/7076042

    What MIME type should I use for CSV? - Stack Overflow

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    https://developer.mozilla.org/.../Common_types

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  5. devgem.io
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  7. php.sh
    http://doc.php.sh/en/function.mime-content-type.html

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    Which MIME type should I use for a CSV file?
    Although text/csv is the recommended MIME type for CSV files, some browsers or applications might still recognize and handle other MIME types for CSV files. It's worth noting that you could try one of the following alternative MIME types, especially when dealing with legacy applications:

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  9. Phppot
    https://phppot.com/php/how-to-handle-…

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  11. mozilla.org
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  12. stackoverflow.com
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