[Webkit-unassigned] [Bug 137037] New: Adopt Page Visibility 2 optimizations as defined in W3C spec
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Sep 23 12:35:22 PDT 2014
https://bugs.webkit.org/show_bug.cgi?id=137037
Summary: Adopt Page Visibility 2 optimizations as defined in
W3C spec
Product: WebKit
Version: 528+ (Nightly build)
Platform: All
URL: https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/Page
Visibility2/Overview.html
OS/Version: All
Status: NEW
Severity: Enhancement
Priority: P2
Component: WebKit2
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: jeffreytgilbert at gmail.com
My recommendation is to extend the functionality of the current Page Visibility API to allow optimizing content not visible in the active area of the viewport. As defined in the Page Visibility 2 Editor's Draft, this would include iframes separate from the parent document, content hidden by CSS manipulation (display:none, opacity:0, visibility hidden, width/height:0), minimization of the window, backgrounding, screen savers, but could also include browser windows hidden from display, or obscured by other windows (ex: Apple's App Nap or botnets running browser shells of webkit/Trident/Chromium purposely hidden from view). Currently, this relates to how the browser is optimizing content, but this could be amended to simply broadcast if it were out of view, and capable of being passively ignored or actively utilized.
The spec: https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/PageVisibility2/Overview.html
W3C Dialog started here:
http://lists.w3.org/Archives/Public/public-web-perf/2014Jan/0040.html
Dialog reopened here:
http://lists.w3.org/Archives/Public/public-web-perf/2014Sep/0052.html
Relevance:
http://blogs.keynote.com/the_watch/2014/02/filtering-out-web-performance-monitoring-traffic-from-google-analytics.html
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