What is MIME type "application/x-cbt"?
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
The MIME type application/x-cbt designates a specific archive format used for digital comic books. It packages comic pages and related files into a tar container structure.
Files of this type are stored with the CBT extension. This format groups images and text to display sequential comic panels.
- Main use: Managing and reading digital comic books.
- Container type: Uses a tar-based archive to bundle all comic content.
- Compatibility: Supported by comic reading applications that extract and display bundled files.
- Format flexibility: Can include various file types (images, text, etc.) for comprehensive comic presentation.
This MIME type is informal and not officially registered with IANA. Its primary role is to offer a simple way to distribute comic archives digitally. For more on MIME types, visit the IANA Media Types Reference.
Associated file extensions
Usage Examples
HTTP Header
When serving content with this MIME type, set the Content-Type header:
Content-Type: application/x-cbt
HTML
In HTML, you can specify the MIME type in various elements:
<a href="file.dat" type="application/x-cbt">Download file</a>
Server-side (Node.js)
Setting the Content-Type header in Node.js:
const http = require('http');
http.createServer((req, res) => {
res.setHeader('Content-Type', 'application/x-cbt');
res.end('Content here');
}).listen(3000);
Associated file extensions
FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type
on the command line. Many programming languages also provide libraries to detect MIME types.
Why are multiple MIME types listed for one extension?
Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.