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whatwg
HTML Standard
The topic of how images can be presented while they are loading was recently [brought up](https://github.com/whatwg/html/issues/2806#issuecomment-378831265) in an issue about loading images lazily. This seems like a discussion worth its...
This is meant to address #3802, and supersedes #4748. More background info can be found on those two issues. There is currently no high-performance code path for getting `ImageData` from...
*Overview: Custom elements introduce what is effectively an "indeterminite" state about whether an element has a definition, which is resolved asynchronously... maybe. CSS currently doesn't offer expressive power beyond 2...
## Introduction The [``](https://html.spec.whatwg.org/multipage/media.html#the-video-element) element was one of the most revolutionary new features of HTML5, and a key part of "Web 2.0". Today, the web platform has become powerful enough...
tl;dr: Correctly marked up responsive images (`srcset` + `sizes`) result in high-resolution devices (2x, 3x, 4x, 5x, 6x dpi) downloading and using very large files causing significant performance hits, especially...
Prefetch is simply a fetch with `prefetch-src` CSP and no post-processing of the resource. Closes #5229 Closes https://github.com/w3c/resource-hints/issues/86 - [ ] At least two implementers are interested (and none opposed):...
# Bug report ## Describe the bug W3 validator reports error for the following tag, ``↩ ## To Reproduce Go to https://validator.w3.org/#validate_by_input and paste the following code. ``` ``` You...
https://html.spec.whatwg.org/#process-a-navigate-fetch 14.5.3 waits for some random(?) task to 'process response'. But 'process response' links just to fetch itself being an option algorithm, and it wasn't provided when fetch was called.
I wanted to use an iframe, but GitHub doesn't allow it. They're smart because I could be running a clickjacking operation and of course GitHub is protecting themselves here. However,...
I came across this issue while re-triaging [this chrome bug](https://bugs.chromium.org/p/chromium/issues/detail?id=588760). When clicking an element inside a disabled button element, chrome firefox and safari all don't dispatch click events on the...
