PTI Image (Personal/Vanity Tree)

import magic
print(magic.from_file('image.pti', mime=True)) # Will likely default to 'application/octet-stream'

const FileType = require('file-type');
const type = await FileType.fromFile('image.pti');
console.log(type?.mime); // Standard parsers will fail to recognize PTI files

import "net/http"
// Standard HTTP detection cannot identify PTI files internally. You must rely on string matching the .pti extension.

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