[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.


Support for contrast-color() surged this period with 8 new upvotes, while  
top-tier requests including JPEG XL , Customizable <select> , and Temporal  
continued their steady upward trajectory. Technical discussion intensified  
for Permissions-Policy , with developers at Beta Technologies highlighting  
the overhead of supporting deprecated headers in non-Chromium browsers, and  
element() , which received new proposals for improved sizing controls.  
Momentum remains robust for CSS layout and logic primitives like Masonry ,  
if() , and @function , alongside sustained interest in Anchor positioning  
and corner-shape from companies such as Alsacreations and PerwatchAPP.  
Performance-oriented feedback also surfaced for requestIdleCallback() from  
developers at Zoom, indicating a widening scope of interest in scheduling  
and efficiency APIs.


1 closed feature (became Baseline Newly Available)


JSON source text access (#203)

6 newly created features


navigator.modelContext (#539)
Math font family (#538)
Fetch form data (#537)
Lazy-loading media (#534)
Signature-based resource integrity (#533)
text-decoration-skip-ink: all (#532)

33 active features


contrast-color() (#295)

👍 +8

JPEG XL (#215)

👍 +6
💬 +1
"## What I want to do with this feature I want to use it in desktop  
Electron apps. Electron uses Chrome as its baseline, so the addition  
of ..." (@webbedspace)

Customizable <select> (#278)

👍 +5

Masonry (#308)

👍 +4

if() (#303)

👍 +4

Temporal (#291)

👍 +4

Container style queries (#196)

👍 +4

@function (#300)

👍 +3

Anchor positioning (#245)

👍 +3

field-sizing (#234)

👍 +3

Permissions policy (#479)

👍 +2
💬 +1
"## What I want to do with this feature Essentially, replace the  
now-deprecated `Feature-policy` with just **one** header, ie,  
`Permission..." (@GwynethLlewelyn)

corner-shape (#398)

👍 +2

Scoped custom element registries (#364)

👍 +2

attr() (#293)

👍 +2

Container scroll-state queries (#272)

👍 +2

WebGPU (#202)

👍 +2

<install> (#522)

👍 +1

random() (#514)

👍 +1

:open (#310)

👍 +1

:has-slotted (#276)

👍 +1

moveBefore() (#273)

👍 +1

line-clamp (#267)

👍 +1

interpolate-size (#253)

👍 +1

calc-size() (#252)

👍 +1

Cross-document view transitions (#248)

👍 +1

CSS import attributes (#233)

👍 +1

EditContext (#228)

👍 +1

overlay (#211)

👍 +1

margin-trim (#201)

👍 +1

WebTransport (#159)

👍 +1

requestIdleCallback() (#52)

👍 +1

<datalist> (#51)

👍 +1

element() (#297)

💬 +1
"@jakearchibald Apologies for the very late reply. I've only just had some  
time to toy with this feature in Firefox. So far, it functions ex..."  
(@Opisek)


Activity since 2026-03-12