Guess this extension is dead - no response from the dev for a year now... Rated 1 out of 5 stars

Too bad... seems like such a simple thing, since the button only has to execute the same code as the menu command, but apparently not or else you'd think someone else would have come along and figured out how to update it. I took a peek, but quickly got lost (ianap)...

Rated 4 out of 5 stars

Only 4 stars since it isn't supported in TB3 and the dev has been non-responsive to email inquiries... once it is updated I'll change it to 5 stars...

I really miss the convenience of View Headers Toggle since moving to TB3 - I really hope the author will update it soon - or that someone else will come along and do it for him...

It is simple but so convenient for anyone who examines headers a lot...