What is MIME type "application/vnd.stardivision.impress-packed"?

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

The application/vnd.stardivision.impress-packed MIME type is used for packed presentation files created by the StarOffice Impress application. It bundles slides, media, and formatting together in a compact, binary format for effective storage and sharing.

Files in this format handle rich presentation elements. They store complex layouts and embedded content. This design makes the file easier to transport and ensures that the presentation appears correctly on any compatible system. Many older office suites use this proprietary format.

Key points include:

Main Use: It is used for creating and displaying slide presentations.
Packaging: The format compresses and encloses all presentation resources within one file.
Compatibility: It is part of the StarOffice family. Modern suites like OpenOffice and LibreOffice can also support these files.
Standards: It follows established MIME standards. More details are available at IANA.

This MIME type is linked with several file formats. For example, one common presentation file uses the SDP format. Other related binary formats appear as SDC, SDG, and more, each designed to handle specific types of content in the StarOffice suite.

Associated file extensions

.sdb, .sds, .sdc, .sdw, .sdg, .smf, .sgl, .sda, .sdp, .sdd, .sdm, .vor

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.stardivision.impress-packed

HTML

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


    <a href="file.dat" type="application/vnd.stardivision.impress-packed">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/vnd.stardivision.impress-packed');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.sdb, .sds, .sdc, .sdw, .sdg, .smf, .sgl, .sda, .sdp, .sdd, .sdm, .vor

FAQs

What software opens application/vnd.stardivision.impress-packed files?

You can open these files using modern open-source office suites like LibreOffice or Apache OpenOffice. While the format was originally created for the legacy StarOffice Impress, these modern tools maintain backward compatibility for opening packed presentations like .sdp.

How do I configure Apache to serve StarOffice Impress Packed files?

To ensure the server sends the correct headers, add the MIME type directive to your .htaccess file or main configuration. Use the line: AddType application/vnd.stardivision.impress-packed .sdp to map the extension correctly.

Can web browsers display this MIME type directly?

No, modern web browsers (such as Chrome, Firefox, or Edge) cannot render legacy StarOffice binary files natively. Instead of displaying the presentation, the browser will usually prompt the user to download the file to their local machine.

How does this format differ from the modern .odp format?

The application/vnd.stardivision.impress-packed type identifies the older, proprietary binary format used by StarOffice. In contrast, the modern standard is the OpenDocument Presentation (.odp), which is XML-based and is the default for current versions of LibreOffice.

What is the correct Nginx configuration for this file type?

You should define the mapping in your mime.types file or inside a specific server block. Add the following entry: application/vnd.stardivision.impress-packed sdp; to ensure Nginx serves the file with the correct content type.

Are there security risks associated with opening these files?

As with many legacy binary office formats, these files can potentially contain macros or embedded scripts. It is recommended to only open files from trusted sources and to use modern software like LibreOffice, which often includes security features to disable macros by default.

How can I convert a StarDivision packed file to PowerPoint?

Open the file in LibreOffice Impress, and then use the "Save As" or "Export" feature. Select a Microsoft PowerPoint format (such as .pptx or .ppt) from the dropdown menu to convert the legacy binary structure into a format compatible with Microsoft Office.

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.