Perhaps the author doesn't realize that WebKit is open source. They could have used their screed to propose to the WebKit team that a first-party page loaded fr

Perhaps the author doesn't realize that WebKit is open source. They could have used their screed to propose to the WebKit team that a first-party page loaded from a file:/// URI not have its client-side storage subject to the 7-day purge, by setting the "firstPartyWebsiteDataRemovalMode" network connection property to "none" — patch included! But they did not, which is quite disappointing. The new change to ITP is here: https://github.com/WebKit/webkit/commit/4db42c1571d821572ea91abe10aedf942b774562 https://github.com/WebKit/webkit/commit/4db42c1571d821572ea9... The cookie filtering logic specifically is located here: https://github.com/WebKit/webkit/search?q=filtercookies https://github.com/WebKit/webkit/search?q=filtercookies The file:/// handler is implemented here: https://github.com/WebKit/webkit/blob/master/Source/WebCore/fileapi/File.cpp https://github.com/WebKit/webkit/blob/master/Source/WebCore/... (I don't have anything to do with Apple or WebKit.)