Common HTTP "Content-Type"

The most common type are:

1. Type application

   application/java-archive
   application/EDI-X12   
   application/EDIFACT   
   application/javascript   
   application/octet-stream   
   application/ogg   
   application/pdf  
   application/xhtml+xml   
   application/x-shockwave-flash    
   application/json  
   application/ld+json  
   application/xml   
   application/zip  
   application/x-www-form-urlencoded  
   

2. Type audio

   audio/mpeg   
   audio/x-ms-wma   
   audio/vnd.rn-realaudio   
   audio/x-wav   
   

3. Type image

   image/gif   
   image/jpeg   
   image/png   
   image/tiff    
   image/vnd.microsoft.icon    
   image/x-icon   
   image/vnd.djvu   
   image/svg+xml    
   

4. Type multipart

   multipart/mixed    
   multipart/alternative   
   multipart/related (using by MHTML (HTML mail).)  
   multipart/form-data  
   

5. Type text

   text/css    
   text/csv    
   text/html    
   text/javascript (obsolete)    
   text/plain    
   text/xml    
   

6. Type video

   video/mpeg    
   video/mp4    
   video/quicktime    
   video/x-ms-wmv    
   video/x-msvideo    
   video/x-flv   
   video/webm   
   

7. Type vnd :

   application/vnd.android.package-archive
   application/vnd.oasis.opendocument.text    
   application/vnd.oasis.opendocument.spreadsheet  
   application/vnd.oasis.opendocument.presentation   
   application/vnd.oasis.opendocument.graphics   
   application/vnd.ms-excel    
   application/vnd.openxmlformats-officedocument.spreadsheetml.sheet   
   application/vnd.ms-powerpoint    
   application/vnd.openxmlformats-officedocument.presentationml.presentation    
   application/msword   
   application/vnd.openxmlformats-officedocument.wordprocessingml.document   
   application/vnd.mozilla.xul+xml   

For detail, please refer to web address: http://www.iana.org/assignments/media-types/media-types.xhtml.