Firebase Hosting Usage Stats - what does "Storage" stand for?

Question

I am having a hard time getting my head around the "Storage" number under Firebase Hosting > Usage tab.

According to its corresponding tooltip, the Storage number shows the bytes stored. My understanding is that this is the size of my website. But then I am getting ~280 MB for this Storage number while my website is only 712 KB (ie. The size of the public root directory of my website).

Is the Storage number supposed to be the size of my website? If no, how should I interpret it?

Answer 1

The storage counter measures all space used by your hosting files on Google's servers.

This includes the current version of the deployed site and any previously deployed versions that you haven't deleted. The latter can easily add up, since (due to the convenience of firebase deploy) you end up deploying a lot of versions.