What are the “loose objects” that the Git GUI refers to?

Question

When I open the Git GUI, I get a popup message that refers to loose objects. I did git gc and that removed the message.

Wh

Answer 1

The Git Book explains it pretty well: https://git-scm.com/book/en/v2/Git-Internals-Packfiles

Loose objects are the simpler format. It is simply the compressed data stored in a single file on disk. Every object written to a seperate file.