WWDC26: Create web extensions for Safari | Apple
Apple's WWDC26 session teaches developers how to build and distribute Safari web extensions for content blocking.
“Apple is working with other browsers in the W3C Web Extensions Working Group to standardize the APIs used to build web extensions across browsers.”
A WWDC26 tutorial walks developers through building a Safari web extension that blocks distracting sites using HTML, CSS, JavaScript, and the declarative net request API, then distributing it via the App Store. The session contains no meaningful AI industry signal and is a standard developer how-to.