Firefox Content Blocking

https://support.mozilla.org/en-US/kb/content-blocking

I’m liking strict mode, especially the fact that it blocks embedded social media stuff, which uBlock Origin doesn’t do (by default).

Somewhat related, if you want to prevent videos from playing automatically go to about:config and change the “media.autoplay.allow-muted” to “false”.
I’m guessing Satan and his league of web developers complained about the outright blocking option.
“Could you let the video play as long as it’s muted? I mean our goal is just to waste people’s bandwidth, it’s not really about the content anyhow.”

// Whether to autostart a media element with an |autoplay| attribute.
// ALLOWED=0, BLOCKED=1, defined in dom/media/Autoplay.idl
pref("media.autoplay.default", 0);
// By default, don't block muted media from playing automatically.
pref("media.autoplay.allow-muted", true);

https://dxr.mozilla.org/mozilla-release/source/modules/libpref/init/all.js

The Block Autoplay feature is enhanced to give users the option to block any video that automatically starts playing, not just those that automatically play with sound.

:cool:

Beware if/when you decide to clear your cache and cookies…
Not totally unexpected, it wiped out authentication tokens for apps like discordapp, slack and twitch.tv.
Then, unlike when you might have first logged in, you have to go into the Firefox Content settings (Privacy and Security section), uncheck block pop-ups and uncheck all the content blocking to re-login to the above services… Then re-enable afterwards.

I assume that other web apps and sites could be affected the same way.

I also found that if the website is extremely graphics intensive, you may have to disable hardware acceleration, the Firefox browser can overload the GPU.

TSU

Thank you very much for the comment. It’s super useful for an ignorant Firefox user like myself that doesn’t read the release notes :slight_smile: This feature works wonders for me.