Content-Type，内容类型，用于定义网络文件的类型和网页的编码，决定浏览器将以什么形式、什么编码读取这个文件。这里汇总一下常用的，所有资料来源于网络，未经测试：
| 文件后缀 | 处理方式 |
| .* | application/octet-stream |
| .asp | text/asp |
| .avi | video/avi |
| .bmp | application/x-bmp |
| .css | text/css |
| .doc | application/msword |
| .docx | application/vnd.openxmlformats-officedocument.wordprocessingml.template |
| .exe | application/x-msdownload |
| .gif | image/gif |
| .html/.htm/.jsp/.xhtml | text/html |
| .java | java/* |
| .jpeg/.jpg | image/jpeg |
| .jpg | application/x-jpg |
| .ppt | application/vnd.ms-powerpoint 或 application/x-ppt |
| .pptx | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| .rmvb | application/vnd.rn-realmedia-vbr |
| .svg/.xml | text/xml |
| .swf | application/x-shockwave-flash |
| .txt | text/plain |
| .wav | audio/wav |
| .xls | application/vnd.ms-excel 或 application/x-xls |
| .xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |