[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.


Interest in Anchor positioning continues to accelerate, leading this period  
with 8 new upvotes from developers at companies including Vectoredge and  
Outbrain. JPEG XL also remains a top priority, bolstered by a detailed  
comment from Google highlighting the format's critical role in bridging  
interoperability gaps with medical imaging (DICOM), professional  
photography, and digital document standards. Momentum persists for  
Customizable <select> and the Temporal API, with Atlassian notably  
signaling support for the former to improve UI component flexibility.  
Additionally, the attr() function generated specific feedback regarding its  
potential to simplify CMS-driven layouts—specifically for object-fit  
positioning—by eliminating the need for verbose inline styles or  
CSP-incompatible polyfills.


39 active features


Anchor positioning (#245)

👍 +8

JPEG XL (#215)

👍 +5
💬 +1
"> [@jyrkialakuijala](https://github.com/jyrkialakuijala), where else has  
JPEG XL already been adopted? The gentle push for JPEG XL on the w..."  
(@jyrkialakuijala)

Temporal (#291)

👍 +4

Customizable <select> (#278)

👍 +4

attr() (#293)

👍 +3
💬 +1
"CMS use case I'd have liked to support with `attr()`: [Support  
`object-fit` in image  
tags](https://github.com/wagtail/wagtail/issues/13411)...." (@thibaudcolas)

WebGPU (#202)

👍 +3

progress() (#444)

👍 +2

Masonry (#308)

👍 +2

if() (#303)

👍 +2

popover="hint" (#274)

👍 +2

interpolate-size (#253)

👍 +2

field-sizing (#234)

👍 +2

<datalist> (#51)

👍 +2

WebGPU subgroups (#501)

👍 +1

AudioListener (#499)

👍 +1

Interest invokers (#464)

👍 +1

caret-shape (#424)

👍 +1

Custom highlights from point (#408)

👍 +1

corner-shape (#398)

👍 +1

Scoped custom element registries (#364)

👍 +1

sibling-count() and sibling-index() (#361)

👍 +1

stretch (#319)

👍 +1

::scroll-button (#316)

👍 +1

Hanging punctuation (#302)

👍 +1

@function (#300)

👍 +1

reading-flow (#290)

👍 +1

<dialog closedby> (#279)

👍 +1

Container scroll-state queries (#272)

👍 +1

text-box (#265)

👍 +1

Federated credential management (#208)

👍 +1

Relaxed-width SIMD (WebAssembly) (#205)

👍 +1

Partitioned cookies (#204)

👍 +1

contextlost and contextrestored (#163)

👍 +1

WebTransport (#159)

👍 +1

WebCodecs (#151)

👍 +1

<meta name="theme-color"> (#145)

👍 +1

Layout instability (#122)

👍 +1

Fullscreen API (#93)

👍 +1

Picture-in-picture (video) (#90)

👍 +1


Activity since 2026-02-05