macsafari
In Safari 12.1 Service workers can’t be disabled anymore via Develop > Experimental Features. I guess it’s not an experimental feature anymore.
Is there any other way to disable them? Sometimes the whatsapp service worker seems to have a hiccup and uses 100% cpu utilization.
earlier solution for safari versions pre 12.1:
How to disable service workers in Safari?
Open Safari and go to Preferences, then click on the Advanced tab. There's a checkbox at the bottom titled "Show Develop menu in menu bar". Check that then close the Preferences window.
You'll notice that in your menu bar between Bookmarks and Window you have a menu called Develop. Near the bottom of that menu list is Disable Images — click it. Now your browsing experience is image free!
If AutoFill is disabled, Safari won't ask to save passwords either.
Best Answer
You can try to turn off the feature via the
Debugmenu. For me, using Safari 12.1.1, It is listed underDebug->WebKit Internal Features->Service WorkersNote that I am referring to the internal
Debugmenu, and not theDevelopermenu. TheDebugmenu is activated by writing the keyIncludeInternalDebugMenuinto Safari preferences (e.g.defaults write com.apple.Safari IncludeInternalDebugMenu 1-- under Mojave, you will have to grant Full Disk Access to Terminal.app first; otherwise the setting will not take.)I'm not sure if this persists across browser restarts, though.