Fuji Xerox EDMICS-MMR

import magic
# Libmagic does not contain definitions for the proprietary EDMICS wrapper. It will likely identify the file as 'application/octet-stream' or falsely trigger on standard MMR bitstream patterns.
print(magic.from_file('engineering_blueprint.mmr', mime=True))

const mime = require('mime');
// Many JS MIME libraries map .mmr to image/vnd.fujixerox.edmics-mmr by default purely based on historical IANA registry associations
console.log(mime.getType('engineering_blueprint.mmr')); // Likely outputs 'image/vnd.fujixerox.edmics-mmr'

import "net/http"
// The standard net/http library cannot detect EDMICS files internally via byte sniffing. You must rely on extension string matching.

$mime = mime_content_type('engineering_blueprint.mmr');
echo $mime; // Standard server environments will map this to application/octet-stream