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://git

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 iframe

Re: Intent to Unship: in content

One caveat I should mention is that mobile viewport stuff (which is used in RDM as well) relies on the fact that Document::IsTopLevelContentDocument returns true. The function actually returns true for the document of ``. So please make sure it still returns true for the replacement or add an equ

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 disa

Intent to prototype and ship: running background color animations on the compositor thread

Summary: According to a Chrome Platform Status statistics site [1] `background-color` is the third most popular animating CSS property. Running background color animations on the compositor makes the main thread less busy because styling/painting for the animations are skipped on the main thread. W