Originally Posted by
LAXlocal
On Windows 7 or windows 10 how do you check for each tab ?
would be nice if there was an Add-on that showed how many MB ibeing used f you just put the cursor over that tab

Hamburger/vertical dots in the far right of the main toolbar -> More Tools -> Task manager. The "Memory footprint" column for each task beginning with "Tab" in the resulting window is what you're looking for (divided by 1024 to get the amount in MB).