What is サクッと? (slang?)

[Murakumo]

What is サクッと? (slang?)
I have heard it several times spoken casually in anime , but I don't understand what it really means or its purpose

most recently I heard it 23:22 timecode in Gi(a)rlish Number episode 1

 

[Amagasa]

Roughly, it means "easy (easily)", "light (lightly)", or "without effort".

"サクッ" is an onomatopoeia expressing light crushing sounds.
(for example: stepping on the snow, cutting fresh lettuce, eating cookies, etc.)