[ Thanks to kiterunner for this link.
]
“Gloobus Preview is a beautiful file preview
application for Linux. Select a file and click space bar to have a
quick preview of the file, as simple as that. And when I say file,
they include music, videos, images, documents and everything else!“Gloobus Preview
“Music, videos, images, documents, folders – quite literally
‘everything’ is supported by Gloobus Preview. I know what you guys
must be thinking. I already have a default app for every single
file out there and all of them load pretty fast enough. So why do I
need Gloobus Preview. Trust me guys, you will change your opinion
once you start using Gloobus Preview.”