MIME Type Reference Table

MIME Type Reference Table: Core Features and Principles

Are you ever unsure of the correct MIME type to use when configuring a server, setting HTTP headers, or handling file uploads? This tool provides a structured reference table of MIME types and file extensions, allowing you to quickly look up and verify the standard types used to identify file formats on the internet. A MIME type (Multipurpose Internet Mail Extensions Type) is a standardized content identifier used in web communication to tell browsers or applications how to handle received data. This table covers mainstream types ranging from common ones like image/jpeg and application/pdf to various documents, archives, and media files.

Why Choose Our MIME Type Reference Table?

• Accurate and Common Data: We have compiled the most frequently used MIME types and extensions in web development and daily applications, ensuring the information you find is practical and reliable.
• Native Browser Search Support: The tool is presented as a clear table, allowing you to use your browser's built-in find feature (Ctrl+F or Cmd+F) for quick navigation without any extra interaction.
• Comprehensive Information: Each record includes three columns: media type, typical file extension, and a brief description, helping you understand the correlations and use cases.

Tool Tutorial

1. Visit the MIME Type Reference Table page to view the complete list.
2. Use the keyboard shortcut Ctrl+F (Windows/Linux) or Cmd+F (Mac) to open the in-page search box.
3. Enter the keyword you want to look up, such as the file extension ".mp4" or the MIME type "video/mp4".
4. The browser will automatically highlight and scroll to the matching row so you can read the complete details.

Frequently Asked Questions (FAQ)

Q: What is a MIME type, and what does it do?
A: A MIME type is an internet standard used to identify the nature and format of a file. Its core purpose is to allow clients (like web browsers) to correctly parse and display content based on the Content-Type header returned by the server (e.g., text/html; charset=utf-8). For example, if a server sends image/png, the browser knows it's a PNG image and renders it; if it sends application/octet-stream, it typically triggers a file download.

Q: What is the MIME type for a ".txt" file?
A: It is text/plain. This is the most standard and universal MIME type for plain text files.

Important Notes

This reference table is intended for quick lookups. Please note: 1) Some extensions may map to multiple MIME types (e.g., a ".js" file could be application/javascript or text/javascript); choose according to your specific tech stack requirements. 2) In actual deployments, your server configuration (such as Nginx's mime.types file) is the ultimate deciding factor. 3) This table does not include every IANA-registered type; if you cannot find the type you need, we recommend consulting official standard documents. 4) The tool itself does not process any user-uploaded files, so there are no privacy risks.

Technical Notes & Best Practices

As a developer, correctly setting MIME types is crucial for web security (such as preventing XSS) and feature compatibility. A common mistake is using overly generic types, like applying application/octet-stream to all unknown binary files. It is recommended to always use the most specific standard type available. For instance, for JSON API responses, use application/json instead of text/plain. When configuring web servers (like Apache or Nginx), ensure that their mime.types files include the latest types you need. Here is an input/output example for a typical scenario: when a user uploads a ".csv" file, the backend should identify its MIME type as text/csv (standard type) or application/vnd.ms-excel (legacy compatible type) and set it correctly in the HTTP response header to ensure the frontend can properly process it or prompt a download.