What is MIME type "application/vnd.lotus-1-2-3"?

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

application/vnd.lotus-1-2-3 is the MIME type for files created by Lotus 1-2-3, a spreadsheet application once popular in business environments. It tells programs that the file contains spreadsheet data with rows, columns, formulas, and formatting.

This type covers several file variants developed over different Lotus versions, such as configuration and worksheet files. Common examples include configuration data (CNF), primary worksheets (123), and legacy worksheets like WK4, WKS, WK1, WK3. Other specialized versions include WR1, WJ1, WJ3, and WK2.

Key points about this MIME type include:

• Data Exchange: It ensures that legacy Lotus spreadsheets open correctly in compatible software.
• Legacy Support: It helps users access and convert old data stored in Lotus formats.
• System Integration: Operating systems and applications use it to select the right program for viewing or editing these files.

This MIME type remains relevant for users who manage archived business data or perform document conversions from older formats. For further technical details, you may explore more about MIME types from trusted online resources.

Associated file extensions

.cnf, .wr1, .123, .wk4, .wks, .wk1, .wk3, .wj1, .wj3, .wk2

Usage Examples

HTTP Header

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

    Content-Type: application/vnd.lotus-1-2-3
  

HTML

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

    <a href="file.dat" type="application/vnd.lotus-1-2-3">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.lotus-1-2-3');
      res.end('Content here');
    }).listen(3000);
  

Associated file extensions

.cnf, .wr1, .123, .wk4, .wks, .wk1, .wk3, .wj1, .wj3, .wk2