MIME Types Cheat Sheet — Common Content-Types for Web Developers (2025)

A printable MIME type reference for web developers. Copy-paste Content-Type values for server configuration, API responses, and file serving.

Document MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .pdf | application/pdf | PDF Document | | .doc | application/msword | Word (Legacy) | | .docx | application/vnd.openxmlformats-officedocument.wordprocessingml.document | Word | | .xls | application/vnd.ms-excel | Excel (Legacy) | | .xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | Excel | | .pptx | application/vnd.openxmlformats-officedocument.presentationml.presentation | PowerPoint | | .epub | application/epub+zip | EPUB Ebook | | .rtf | application/rtf | Rich Text |

Image MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .jpg/.jpeg | image/jpeg | JPEG Image | | .png | image/png | PNG Image | | .gif | image/gif | GIF Image | | .webp | image/webp | WebP Image | | .avif | image/avif | AVIF Image | | .heic | image/heic | HEIC (iPhone) | | .svg | image/svg+xml | SVG Vector | | .ico | image/x-icon | ICO Favicon | | .bmp | image/bmp | BMP Bitmap | | .tiff | image/tiff | TIFF Image |

Video MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .mp4 | video/mp4 | MP4 Video | | .webm | video/webm | WebM Video | | .mkv | video/x-matroska | MKV Matroska | | .mov | video/quicktime | QuickTime | | .avi | video/x-msvideo | AVI Video | | .m3u8 | application/vnd.apple.mpegurl | HLS Playlist |

Audio MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .mp3 | audio/mpeg | MP3 Audio | | .wav | audio/wav | WAV Audio | | .flac | audio/flac | FLAC Lossless | | .aac | audio/aac | AAC Audio | | .ogg | audio/ogg | OGG Vorbis | | .opus | audio/opus | Opus Audio | | .m4a | audio/mp4 | M4A (AAC) | | .midi | audio/midi | MIDI |

Font MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .ttf | font/ttf | TrueType | | .otf | font/otf | OpenType | | .woff | font/woff | WOFF | | .woff2 | font/woff2 | WOFF2 |

Data / Config MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .json | application/json | JSON | | .xml | application/xml | XML | | .yaml/.yml | text/yaml | YAML | | .toml | application/toml | TOML | | .csv | text/csv | CSV | | .sql | application/sql | SQL | | .txt | text/plain | Plain Text | | .md | text/markdown | Markdown | | .html | text/html | HTML | | .css | text/css | CSS | | .js | text/javascript | JavaScript | | .wasm | application/wasm | WebAssembly |

Archive MIME Types

| Extension | MIME Type | Name | |-----------|----------|------| | .zip | application/zip | ZIP | | .tar.gz/.tgz | application/gzip | Gzip Tarball | | .tar.bz2 | application/x-bzip2 | Bzip2 Tarball | | .7z | application/x-7z-compressed | 7-Zip | | .rar | application/vnd.rar | RAR | | .gz | application/gzip | Gzip |

Server Configuration Snippets

Nginx

types {
    # Modern image formats
    image/avif                            avif;
    image/webp                            webp;
    image/heic                            heic heif;

    # Web fonts
    font/woff2                            woff2;
    font/woff                             woff;
    font/ttf                              ttf;
    font/otf                              otf;

    # Data formats
    application/json                      json;
    text/yaml                             yaml yml;
    application/toml                      toml;
    text/markdown                         md markdown;

    # WebAssembly
    application/wasm                      wasm;
}

Apache (.htaccess)

# Modern image formats
AddType image/avif .avif
AddType image/webp .webp
AddType image/heic .heic .heif

# Web fonts (with CORS)
AddType font/woff2 .woff2
AddType font/woff .woff
<FilesMatch "\.(ttf|otf|woff|woff2)$">
    Header set Access-Control-Allow-Origin "*"
</FilesMatch>

# Data formats
AddType application/json .json
AddType text/yaml .yaml .yml
AddType application/toml .toml

# Force download (not inline)
<FilesMatch "\.(pdf|doc|docx|xls|xlsx)$">
    Header set Content-Disposition attachment
</FilesMatch>

Express.js

const express = require('express');
const app = express();

// Serve static files with correct MIME types
app.use(express.static('public', {
  setHeaders: (res, path) => {
    if (path.endsWith('.avif')) res.type('image/avif');
    if (path.endsWith('.woff2')) res.type('font/woff2');
    if (path.endsWith('.wasm')) res.type('application/wasm');
  }
}));

// API response with explicit Content-Type
app.get('/api/data', (req, res) => {
  res.setHeader('Content-Type', 'application/json');
  res.json({ data: [] });
});

// Force download
app.get('/download/:file', (req, res) => {
  res.setHeader('Content-Disposition', 'attachment');
  res.sendFile(req.params.file);
});

For a searchable, filterable MIME type database, use our MIME Type Lookup Tool.