Files with the .xlsx extension belong to the «Documents» group. MIME type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.
XLSX
XLSX file format: extension, MIME type and available conversion directions.
XLSX file format: extension, MIME type and available conversion directions.
Files with the .xlsx extension belong to the «Documents» group. MIME type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.
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