Completely trashed PayPal. Prevented PayPal objects loading and sloooooowed it down terribly.

cheap copy of HTTPS everywhere

Misses to detect a lot of HTTP sites that can be redirected to HTTPS. While another addon called HTTPZ redirects the same sites to HTTPS.

Does not work, period. I use Thunderbird, another Mozilla property (still, at least in name if an unwanted bastard child) to manage RSS feeds, and there is one site with a feed that insists on delivering HTTP links in the feed rather than HTTPS. When I click on those HTTP links in the header of the feeds in Thunderbird, Firefox now refuses to open them, so I needed something to correct the site's carelessness. Smart HTTPS claims to do that but it doesn't: the links when injected into Firefox still aren't converted and still fail.

Not working, is not saving configurations.

Extension not effective · Issue #27 · ilGur1132/Smart-HTTPS

https://github.com/ilGur1132/Smart-HTTPS/issues/27

After installing you will never be able to search a word from url bar.
Just do not install it!

It does nothing on firefox 57.

Not working. Whitelisted non-encrypted Websites are still called with https and are thus blocked from being displayed.

I suggest others to remain miles away from this addon.

I was shocked to see the Firefox Devs recommending a third party add-on, Smart HTTPS. Smart HTTPS is actually pretty stupid, and does not include complex rulesets. The Electronic Freedom Foundation has spent a LOT of time making sure that hundreds of the most common violators of this issue are dealt with correctly. HTTPS Everywhere may not redirect everything everywhere, but it does fix even the most complex rule breakers, like Facebook. Check out this link and click through to the Facebook ruleset for an example. https://www.eff.org/https-everywhere/atlas/

The Electronic Freedom Foundation has spent a lot of time and resources developing this, and they should be congratulated. The author of Smart HTTPS should be ashamed, and ought to team up with the EFF.