For the unlucky folks that still support IE8, here's a few resources on helping to make the case on dropping support:It's a massively slow experiencehttps://github.com/h5bp/lazyweb-requests/issues/11#issuecomment-8184513
has data on how different IE8 is in performance issues. (We could still use more data)You gain critical features when you drop
Here's a decent view of what you gain:
(this includes some stuff in ie8)
(In some cases this means you no longer need polyfills, in others it unlocks real practical use).
If you have any other resources or techniques that have helped you drop IE8 support at your spot, leave a comment.