Does Indiegogo take a fee?

Excuse me, I was wondering if you could clarify something for me regarding Indiegogo. When someone raises funds through their platform, does Indiegogo take a fee for their services? I'm particularly interested in knowing if there's a percentage of the total funds raised that goes to Indiegogo, or if there's a flat fee that's charged. It would be greatly appreciated if you could provide some clarity on this matter. Thank you.