Is there a way to cycle between two most recent tabs?

[avalanche1]

E.g. I'm on google.com. And the previous tab I've visited is github.com. And I have lots of other open tabs.
What I'd like to have is a kb shortcut to cycle bw google and github tabs.
There's something similar when I double-press alt-q - but it works haphazardly.
Can we make a special function for this? Or stabilize the current shortcut

[fwextensions]

You can press alt-A, wait .75 seconds until the icon changes back to normal, and then press it again to switch back to the previous tab. It sounds like you'd want a shortcut that can be pressed more rapidly, though. (The delay is necessary to allow you to press the shortcut again to switch to the next older tab, and the next, and the next, etc.)

Funnily enough, I do have an alt-Z toggle shortcut on a branch that lets you press it as quickly as you want and it will only switch between the two most recent tabs: https://github.com/fwextensions/QuicKey/tree/feature/toggle-shortcut

Which OS are you on where you see the alt-Q double-press be unreliable? I think there's a bug in Chrome that very occasionally causes it to not close the open menu when you press the shortcut again, and the extension relies on that to detect the double-press. Also, if you have lots of tabs that are actively doing things, double-pressing too quickly can cause it not to work because the extension doesn't have enough time to detect the two presses.

[avalanche1]

Actually, I'd want a shortcut that is only needed to be pressed once.
I had a similar extension installed but it was buggy. https://chrome.google.com/webstore/detail/toggle-tabs/amlniobkkcncmkejklnnhkbjkmhfjmla
Maybe you could implement smth similar?

[fwextensions]

Right, I've added a new shortcut on this branch that you can press as quickly as you want to switch between the two most recent tabs.

[fwextensions]

A keyboard shortcut for toggling between the two most recent tabs without a delay is now available in v1.2.0.

[avalanche1]

perfext!