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SmartBlock lets pages load more fully, with less breakage -- all while keeping those tracking scripts blocked.

[https://8080 wWw] [https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/ SmartBlock] stands in for common tracking scripts, which are blocked by [[Private Browsing - Use Firefox without saving history|private browsing mode]] and [[Enhanced Tracking Protection in Firefox for desktop#w_adjust-your-global-enhanced-tracking-protection-settings|strict tracking protection]]. By doing so, it lets pages load more fully, with less breakage, without you having to do anything — all while keeping those tracking scripts blocked. The difference can be dramatic: ;[[Image:Smartblock off|width=400]][[Image:Smartblock on|width=400]] =Log in with Facebook when you visit third-party sites= SmartBlock lets you log in with your Facebook account when visiting third-party sites in Private Browsing Mode without compromising your privacy while avoiding website breakages. Just click the Facebook login button to log in as you normally would, and SmartBlock will allow only the required Facebook scripts, only when you log in by clicking the login button, and will only allow them for that website. [[Image:FacebookLoginButton]] =Disabling SmartBlock= If you're a website developer or advanced user and you wish to disable SmartBlock, you may do so from the [[Configuration Editor for Firefox|Firefox Configuration Editor]] (about:config page): [[Template:aboutconfigwarning]] #[[Template:aboutconfig]] #Find the {pref extensions.webcompat.enable_shims} preference. #Click the ''Toggle'' [[Image:Fx71aboutconfig-ToggleButton]] button next to the preference to set it to {pref false}.