Definitely working as intended! Functions akin to The Great Suspender/the Marvellous Suspender. Haven't tested the RAM consumption yet though.

Would love an option to manually suspend a tab, and also have the tab title be the original title, instead of showing "Suspended:...". As much as this is helpful in differentiating between suspended and active tabs, when you have multiple tabs on one window, it's just a row of "Suspended"s.

It's working, but may I ask for "Whitelist" or something? I don't want to suspend specific websites

Features work as expected. Kind of like the Great suspender chrome extension.