excelms-wordms-officepowerpointmime-types

What is a correct MIME type for .docx, .pptx, etc.?


For older *.doc documents, this was enough:

header("Content-Type: application/msword");

What MIME type should I use for new .docx documents? Also, for pptx and xlsx documents?


Solution

  • Here are the correct Microsoft Office MIME types for HTTP content streaming:

    Extension MIME Type
    .doc      application/msword
    .dot      application/msword
    
    .docx     application/vnd.openxmlformats-officedocument.wordprocessingml.document
    .dotx     application/vnd.openxmlformats-officedocument.wordprocessingml.template
    .docm     application/vnd.ms-word.document.macroEnabled.12
    .dotm     application/vnd.ms-word.template.macroEnabled.12
    
    .xls      application/vnd.ms-excel
    .xlt      application/vnd.ms-excel
    .xla      application/vnd.ms-excel
    
    .xlsx     application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
    .xltx     application/vnd.openxmlformats-officedocument.spreadsheetml.template
    .xlsm     application/vnd.ms-excel.sheet.macroEnabled.12
    .xltm     application/vnd.ms-excel.template.macroEnabled.12
    .xlam     application/vnd.ms-excel.addin.macroEnabled.12
    .xlsb     application/vnd.ms-excel.sheet.binary.macroEnabled.12
    
    .ppt      application/vnd.ms-powerpoint
    .pot      application/vnd.ms-powerpoint
    .pps      application/vnd.ms-powerpoint
    .ppa      application/vnd.ms-powerpoint
    
    .pptx     application/vnd.openxmlformats-officedocument.presentationml.presentation
    .potx     application/vnd.openxmlformats-officedocument.presentationml.template
    .ppsx     application/vnd.openxmlformats-officedocument.presentationml.slideshow
    .ppam     application/vnd.ms-powerpoint.addin.macroEnabled.12
    .pptm     application/vnd.ms-powerpoint.presentation.macroEnabled.12
    .potm     application/vnd.ms-powerpoint.template.macroEnabled.12
    .ppsm     application/vnd.ms-powerpoint.slideshow.macroEnabled.12
    
    .mdb      application/vnd.ms-access
    

    For further details check out this TechNet article and this blog post.