What is stored in the profile's Storage-> Default? (specific

[zdfcs]

What is stored in "storage"-> "default" in the profile of Firefox browser?
What is the effect of deleting it?

(I'm sorry, I'm using translation.)

[morat]

The <profile folder>\storage\default folder stores addon data and system addon data.

Don't delete the moz-extension folders.

Firefox Features (sometimes called system addons)
http://support.mozilla.org/kb/use-troub ... x-features

The folder also stores local storage data that a website can use for offline data storage.

More info
http://support.mozilla.org/questions/1168025 (see corel's reply)

Manage local site storage settings
http://support.mozilla.org/kb/storage

[dickvl]

See also the Storage column in Manage Data.
Settings -> Privacy & Security -> Cookies and Site Data: "Manage Data"

[zdfcs]

Thank you for the reference site.

I will refer to it.