Web Sharing is Web Caring
summary
Including Facebook and Twitter widgets makes 12 extra requests to five origins, downloads almost 1 MB (0.25 MB compressed), and Facebook drops 10 cookies while both fire tracking beacons; those widgets block the main thread and make the page unresponsive for about a second. The Web Share API pops the OS share dialog (promise-based, secure + user input required), the web share target needs a service worker and manifest to receive shares, and a built web share wrapper component provides graceful fallback and works today (≈47% support on mobile/desktop combos).
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