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[Bug 22737] New: Add link type "prerender" to html5 spec

From: <bugzilla@jessica.w3.org>
Date: Fri, 19 Jul 2013 19:56:59 +0000
To: public-html-admin@w3.org
Message-ID: <bug-22737-2495@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22737

            Bug ID: 22737
           Summary: Add link type "prerender" to html5 spec
    Classification: Unclassified
           Product: HTML WG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: CR HTML5 spec
          Assignee: robin@w3.org
          Reporter: arvind@google.com
        QA Contact: public-html-bugzilla@w3.org
                CC: public-html-admin@w3.org

I'm requesting adding link type "prerender" to the html5 specification. It is
similar in nature to the existing link type "prefetch" in the specification.

The "prerender" keyword is meant to be a hint to the browser to load a webpage
in anticipation of a user navigation. It's implemented in Chrome and IE11 as an
experimental feature.

We discussed this in the Web Performance working group and on html wg:
http://lists.w3.org/Archives/Public/public-web-perf/2013Jun/0013.html
http://lists.w3.org/Archives/Public/public-html/2013Jul/0014.html

I've written below the proposed addition to the html5 spec below. Please let me
know if you have any comments on it and what would be the next step in
considering this addition to the spec.
Thanks,
Arvind

4.13.5.10 Link type "prerender"
The prerender keyword may be used with a link, a, and area elements. This
keyword creates an external resource link.

The prerender keyword indicates that preemptively fetching and loading the
specified resource in a hidden top-level browsing context is likely to be
beneficial, as it is highly likely that the user will navigate to this
resource. If the resource is navigated to, the user agent may replace the
current browsing context with the one it loaded the specified resource in. 

The user agent may discard the browsing context corresponding to the
prerendered resource if any of the following is true:

- If the resource is not navigated to within a reasonable amount of time.
- If the user navigates to some other resource from the current browsing
context.
- If the link element is removed from the document.
- There is no default type for resources given by the prerender keyword.

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Received on Friday, 19 July 2013 19:57:00 UTC

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