What is MIME type "image/x-pc3"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

The MIME type image/x-pc3 identifies images stored in a proprietary format used by DEGAS Elite. It is designed for high-resolution graphics that need detailed image quality with file size compression.

Files with this MIME type use a specialized algorithm to compress image data. The compression helps reduce disk space while keeping fine image details intact. These files are typically associated with the PC3 extension.

Main Use: Storing high-resolution images for detailed work.
Functionality: Applies a custom compression method to preserve image quality.
Application: Primarily used within the DEGAS Elite software environment.

For more details on related file extensions, visit an external resource like Filext.

Associated file extensions

.pc3

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: image/x-pc3

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="image/x-pc3">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', 'image/x-pc3');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.pc3

FAQs

Can I view .pc3 files directly in web browsers like Chrome or Firefox?

No, modern web browsers do not natively support the image/x-pc3 MIME type. To display these graphics on a website, you must convert them to a standard web format like image/png or image/jpeg.

How do I open a PC3 file on Windows 10 or macOS?

You cannot open these files with standard photo apps; you need a specialized viewer that supports retro formats. Tools like XnView, IrfanView (with plugins), or RECOIL (Retro Computer Image Library) can decode the DEGAS Elite compression.

How do I configure an Apache server to serve PC3 files correctly?

You need to map the extension to the MIME type in your configuration or .htaccess file. Add the following line: AddType image/x-pc3 .pc3.

What does the 'x-' prefix mean in image/x-pc3?

The x- prefix indicates that this is a non-standard or proprietary MIME type not officially registered with the IANA. It was defined specifically for the DEGAS Elite software to identify its custom compressed high-resolution images.

How do I add support for this MIME type in Nginx?

Open your mime.types file (usually located in /etc/nginx/) and add the entry inside the types block. It should look like this: image/x-pc3 pc3;, then reload Nginx.

Why is the file size of a PC3 file smaller than a PI3 file?

The PC3 format uses Run-Length Encoding (RLE) compression, whereas PI3 files are uncompressed bitmaps. The image/x-pc3 type relies on this compression to save disk space while maintaining the high-resolution monochrome detail typical of the Atari ST era.

General 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.