[developer-signals] weekly digest

WebDX CG developer-signals weekly digest

web-platform-dx/developer-signals

This is an automated email summarizing recent activity on the  
developer-signals repo, which is where web developers add their support for  
web features that are not yet implemented in all major browsers.


Momentum for Masonry and Anchor positioning continues to build, with the  
latter receiving significant new signals from engineers at Red Hat and Atos  
as it remains one of the most anticipated layout features. Interest in  
Customizable <select> remains high, approaching a critical mass of  
developer support, while <img sizes="auto" loading="lazy"> saw a notable  
relative uptick in engagement this period. High-utility primitives like  
field-sizing , if() , and corner-shape (noted in previous reports as  
border-shape ) persist with steady incremental support from a diversifying  
group of stakeholders. Additionally, new feedback on the Fullscreen API  
highlights critical UX gaps regarding caption persistence and extension  
compatibility on mobile platforms, underscoring the demand for more robust  
interoperability in media playback.


3 newly created features


HTML in canvas (#569)
light-dark() image values (#568)
overscroll-behavior (#567)

17 active features


Anchor positioning (#245)

👍 +8

Masonry (#308)

👍 +4

Customizable <select> (#278)

👍 +3

<img sizes="auto" loading="lazy"> (#250)

👍 +3

corner-shape (#398)

👍 +2

interpolate-size (#253)

👍 +2

field-sizing (#234)

👍 +2

CSS import attributes (#233)

👍 +2

Scroll-driven animations (#207)

👍 +2

Fullscreen API (#93)

👍 +1
💬 +1
"I use an iPhone. I want to be able to fullscreen YouTube videos on web  
without losing captions. The YouTube app allows fullscreen with capti..."  
(@Hamham6)

ariaNotify() (#423)

👍 +1

if() (#303)

👍 +1

contrast-color() (#295)

👍 +1

attr() (#293)

👍 +1

Container scroll-state queries (#272)

👍 +1

JPEG XL (#215)

👍 +1

Cursor styles (#35)

👍 +1


Activity since 2026-04-23