A tip for developers
If you’re hosting your own .safariextz file using Apache, make sure to add:
=====
<IfModule mod_mime.c>
AddType application/x-safari-extension safariextz
</IfModule>
=====to .htaccess in the hosting directory, or instead of downloading it as a binary file, users may get a page of gibberish when they click on a link to it.
x-safari-extensionって正式なタイプなの? とりあえずoctet-streamにしとくかな