Re: Intent to prototype and ship: lazy load images
On Sat, Feb 15, 2020 at 4:48 AM Boris Zbarsky wrote: > On 2/6/20 5:26 PM, Hiroyuki Birchill Ikezoe wrote: > > Is this feature enabled by default in sandboxed iframes?: no, as of now > > there is no proposed flag to enable this feature in sandboxed iframes. > > But is it disabled by default there? I would assume not, unless it's > specifically gated on sandboxing state... > To be more precise, lazy loading is disabled in documents where scripting is disabled. Though I don't know the exact conditions where scripting is disabled, by default lazy loading is disabled without `allow-scripts` keyword. hiro ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: Intent to prototype and ship: lazy load images
On Tue, Feb 11, 2020 at 12:43 AM Anne van Kesteren wrote: > On Mon, Feb 10, 2020 at 3:22 PM Hiroyuki Birchill Ikezoe > wrote: > > Is this feature enabled by default in sandboxed iframes?: no, as of now > > there is no proposed flag to enable this feature in sandboxed iframes. > > I think the answer to this question is more complicated. It's disabled > if scripts are disabled, but if scripts are enabled, image lazy load > is enabled, right? > Right. Thanks for the clarification. hiro ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: Intent to prototype and ship: lazy load images
On 2/6/20 5:26 PM, Hiroyuki Birchill Ikezoe wrote: Is this feature enabled by default in sandboxed iframes?: no, as of now there is no proposed flag to enable this feature in sandboxed iframes. But is it disabled by default there? I would assume not, unless it's specifically gated on sandboxing state... -Boris ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: Intent to prototype and ship: lazy load images
On Mon, Feb 10, 2020 at 3:22 PM Hiroyuki Birchill Ikezoe wrote: > Is this feature enabled by default in sandboxed iframes?: no, as of now > there is no proposed flag to enable this feature in sandboxed iframes. I think the answer to this question is more complicated. It's disabled if scripts are disabled, but if scripts are enabled, image lazy load is enabled, right? ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Intent to prototype and ship: lazy load images
In Firefox 75, I intend to turn lazy load images on by default. Summary: lazy load images improves initial page load performance by deferring loading images which are out of viewport, it also reduces network traffic. Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1542784 Standard: https://github.com/whatwg/html/pull/3752 Platform coverage: all Preference: dom.image-lazy-loading.enabled Devtools bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1611387 Other browsers: Chrome has shipped it since 76. WebKit is now implementing it [1] web-platform-tests: https://wpt.fyi/results/loading/lazyload?label=experimental&label=master&aligned Secure contexts: this feature is not restricted to secure contexts. I don't see any reasons to restrict it in secure contexts. If you have concerns, please let me know. Is this feature enabled by default in sandboxed iframes?: no, as of now there is no proposed flag to enable this feature in sandboxed iframes. Bug to turn on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1613611 hiro [1] https://bugs.webkit.org/show_bug.cgi?id=200764 ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
