What is MIME type "application/vnd.3m.post-it-notes"?

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

The MIME type application/vnd.3m.post-it-notes specifies a proprietary format used by 3M digital note tools. It encodes content meant to replicate the look and feel of physical sticky notes with plain text and basic formatting details.

Files with this MIME type are designed to capture quick memos and reminders. They often include metadata such as font style, color, or simple layout instructions so that the note appears similar to an actual Post-it. The file is associated with the PWN extension.

Main use: Storing digital sticky note content for quick memos.
Functionality: Embeds both text and minimal formatting data to ensure a familiar, physical note-like appearance.
Usage context: Operates within the 3M ecosystem and compatible note-taking applications.

For more details on MIME types and registered media formats, visit the IANA Media Types Registry.

Associated file extensions

.pwn

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.3m.post-it-notes

HTML

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


    <a href="file.dat" type="application/vnd.3m.post-it-notes">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.3m.post-it-notes');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.pwn

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.