常见 MIME 类型完整列表

MIME（Multipurpose Internet Mail Extensions），HTTP Content-Type 头部使用，格式：类型/子类型; charset=编码
通用规则：

• text/*：文本类，通常指定 charset=utf-8
• application/*：二进制、程序、文档
• image/*：图片
• audio/*：音频
• video/*：视频
• multipart/*：多部分表单/混合文件

一、文本类 text/*

二、应用/二进制类 application/*

三、图片类 image/*

四、音频 audio/*

五、视频 video/*

六、字体 font/*

七、multipart 多部分类型

八、常用编码补充

text/plain; charset=utf-8
text/html; charset=utf-8
text/css; charset=utf-8
application/json; charset=utf-8

文本类型一般追加字符集：

text/plain; charset=utf-8
text/html; charset=utf-8
text/css; charset=utf-8
application/json; charset=utf-8

九、易错点汇总

1. ❌ text/json → ✅ application/json
2. ❌ application/svg → ✅ image/svg+xml
3. ❌ application/js → ✅ text/javascript
4. 二进制未知文件统一用：application/octet-stream，浏览器会直接下载

十、Node.js / Nginx 快速映射简版（可直接复制配置）

.txt    text/plain
.html   text/html
.css    text/css
.js     text/javascript
.json   application/json
.png    image/png
.jpg    image/jpeg
.gif    image/gif
.webp   image/webp
.svg    image/svg+xml
.pdf    application/pdf
.zip    application/zip
.docx   application/vnd.openxmlformats-officedocument.wordprocessingml.document
.xlsx   application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
.pptx   application/vnd.openxmlformats-officedocument.presentationml.presentation
.mp4    video/mp4
.mp3    audio/mpeg
.woff2  font/woff2

如果你需要，我可以输出：

1. JSON格式的MIME映射表（程序直接读取）
2. Nginx mime.types 完整配置片段
3. Node.js 静态服务 mime 映射对象

{
  ".txt": "text/plain",
  ".html": "text/html",
  ".htm": "text/html",
  ".css": "text/css",
  ".js": "text/javascript",
  ".json": "application/json",
  ".xml": "application/xml",
  ".csv": "text/csv",
  ".md": "text/markdown",
  ".rtf": "text/rtf",
  ".pdf": "application/pdf",
  ".zip": "application/zip",
  ".7z": "application/x-7z-compressed",
  ".rar": "application/vnd.rar",
  ".tar": "application/x-tar",
  ".gz": "application/gzip",
  ".bz2": "application/x-bzip2",
  ".bin": "application/octet-stream",
  ".exe": "application/octet-stream",
  ".apk": "application/vnd.android.package-archive",
  ".msi": "application/x-msi",
  ".doc": "application/msword",
  ".docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
  ".xls": "application/vnd.ms-excel",
  ".xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
  ".ppt": "application/vnd.ms-powerpoint",
  ".pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
  ".odt": "application/vnd.oasis.opendocument.text",
  ".ods": "application/vnd.oasis.opendocument.spreadsheet",
  ".odp": "application/vnd.oasis.opendocument.presentation",
  ".epub": "application/epub+zip",
  ".wasm": "application/wasm",
  ".jpg": "image/jpeg",
  ".jpeg": "image/jpeg",
  ".png": "image/png",
  ".gif": "image/gif",
  ".bmp": "image/bmp",
  ".webp": "image/webp",
  ".avif": "image/avif",
  ".svg": "image/svg+xml",
  ".ico": "image/x-icon",
  ".tiff": "image/tiff",
  ".tif": "image/tiff",
  ".mp3": "audio/mpeg",
  ".wav": "audio/wav",
  ".ogg": "audio/ogg",
  ".flac": "audio/flac",
  ".aac": "audio/aac",
  ".m4a": "audio/mp4",
  ".mp4": "video/mp4",
  ".webm": "video/webm",
  ".mov": "video/quicktime",
  ".avi": "video/x-msvideo",
  ".mkv": "video/x-matroska",
  ".flv": "video/x-flv",
  ".ttf": "font/ttf",
  ".otf": "font/otf",
  ".woff": "font/woff",
  ".woff2": "font/woff2"
}

使用说明

1. Key 统一带前缀 .，方便直接用 path.extname() 获取后缀后匹配
2. 没有匹配到后缀时，默认 fallback：application/octet-stream
3. 文本类如需 charset=utf-8，代码里额外拼接，不要写在这份映射里（如 text/plain; charset=utf-8）

JS 使用示例

const mimeMap = {
  ".txt": "text/plain",
  // ...上面全部
};

function getMime(ext) {
  ext = ext.toLowerCase();
  return mimeMap[ext] || "application/octet-stream";
}

要不要我再输出一份反向映射（MIME -> 文件后缀）的JSON备用？