#interop2026
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una.im
#Interop2026 is here!

Lots of new CSS coming your way:

- style queries
- anchor positioning improvements (already crossbrowser)
- advanced attr()
- popover & dialog improvements like lightdismiss
- scroll-driven animations
- better scroll-snap capabilities

wpt.fyi/interop-2026
web-platform-tests dashboard
wpt.fyi
February 12, 2026 at 5:21 PM
chriscoyier.net
ok I've decided what my interop 2026 vote is (#interop2026)?

`margin-trim`

My fingers reach for it all the time only to be like, oh yeah, Safari-only.

Imagine a `.card` with padding, it just *begs* for `margin-trim: block;`
November 23, 2025 at 1:25 AM
una.im
^ Cons: Firefox doesn't support style queries yet so browser support is limited for now (though it is an #Interop2026 feature!).
March 13, 2026 at 1:33 PM
davatron5000.bsky.social
My #interop2026 Top 10 list:

1. ReferenceTarget
2. ReferenceTarget
3. ReferenceTarget
4. ReferenceTarget
5. ReferenceTarget
6. ReferenceTarget
7. ReferenceTarget
8. ReferenceTarget
9. ReferenceTarget
10. HTML Imports ( Aug. 19, 2013 - Dec. 15, 2014)
September 4, 2025 at 10:09 PM
bram.us
Bon, I filed github.com/web-platform... for #interop2026
Viewports · Issue #1084 · web-platform-tests/interop
Description This is a reprise of this request made for Interop2024 and this request made for Interop2025. Despite the Viewport Investigation Effort from Interop2022 and the Mobile Testing investiga...
github.com
September 16, 2025 at 9:52 AM
letorey.co.uk
Here's my Interop2026 list
interop-rank.jakearchibald.com
JavaScript Temporal CSS attr() CSS anchor positioning CSS color-mix() CSS contrast-color() CSS accent-color Invoker commands HTML popover="hint"
October 18, 2025 at 12:35 PM
bram.us
Seeing some nice proposals being made for #Interop2026: github.com/web-platform...

If you want to suggest one (or more), now’s the time to do so.
web-platform-tests/interop
web-platform-tests Interop project. Contribute to web-platform-tests/interop development by creating an account on GitHub.
github.com
September 8, 2025 at 7:01 AM
bram.us
Viewport behavior in Safari 26 is utterly broken. 🙄😭

Time to get Viewports into #Interop2026 because viewports on iOS have gotten only worse since I did the initial research in, *checks notes*, 2022 — github.com/web-platform...
Screenshot of Safari 26 in "tabs at the top" mode showing a webpage that is set to `viewport-fit=cover` and the dynamic toolbars scrolled away (minimized). The viewport is too short and the safe area insets are all wrong. Device: iPhone 13 Pro. Screenshot of Safari 26 in "tabs at the top" mode showing a webpage with the dynamic toolbars scrolled away (minimized). The viewport (blue box) is way too short and does not toch the very top of the screen. Device: iPhone 13 Pro.
September 15, 2025 at 9:14 PM
igalia.com
#Interop2026 has opened for proposals! This annual cross-vendor project to increase browser compatibility will take your suggestions through September 24. Learn more and speak up: www.igalia.com/2025/09/04/C...
Call for Proposals: Interop 2026 | Igalia
Igalia is an open source consultancy specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and cl...
www.igalia.com
September 4, 2025 at 5:03 PM
meyerweb.com
It’s that time of year again: #interop2026 is now open for proposals from one and all! The window closes on the 24th of this month, so if there’s something you want to get in front of browser vendors to consider making more interoperable, now’s the time. More here: www.igalia.com/2025/09/04/C...
Call for Proposals: Interop 2026 | Igalia
Igalia is an open source consultancy specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and cl...
www.igalia.com
September 4, 2025 at 7:32 PM
jauntywunderkind.bsky.social
was looking through css wins from #interop2026 & noticed this too; so good to see.
bsky.app/profile/una....
bsky.app/profile/jaun...
una.im Una Kravets @una.im · Feb 12
#Interop2026 is here!

Lots of new CSS coming your way:

- style queries
- anchor positioning improvements (already crossbrowser)
- advanced attr()
- popover & dialog improvements like lightdismiss
- scroll-driven animations
- better scroll-snap capabilities

wpt.fyi/interop-2026
web-platform-tests dashboard
wpt.fyi
March 4, 2026 at 12:52 AM
elly.lol
well would you look at that, i managed to find the spoons to submit a proposal for Interop2026 🎉

focusable scroll containers

hopefully it gets picked and apple has to finally get their shit together and fix an accessibility issue for once

github.com/web-platform...
Keyboard focusable scrollers · Issue #1089 · web-platform-tests/interop
Description This is a reprise of this request made for Interop2025. Scroll containers need to be focusable by default. I have spent a few years banging on about ensuring scrolling areas on a page a...
github.com
September 17, 2025 at 10:27 AM
thedailytechfeed.com
Apple's WebKit team unveils ambitious goals for #Interop2026, aiming to enhance browser compatibility and streamline web development. #WebKit #BrowserInterop #WebDevelopment Link: thedailytechfeed.com/apples-webki...
February 13, 2026 at 3:23 PM
rgadellaa.bsky.social
Interop 2026 is here, and so is my 3rd(?) attempt to get them to work on the Notification API! 🥳

(Please vote, and don't forget to vote for other proposals that are important to you, too!)

github.com/web-platform...

#interop2026 #interop
Notification API · Issue #1047 · web-platform-tests/interop
Description Description The Notifications API allows web pages to control the display of system notifications to the end user. These are outside the top-level browsing context viewport, so therefor...
github.com
September 7, 2025 at 1:42 PM
tech-trending.bsky.social
Interop Tokyo 2026 〜 セキュアなモバイル基盤とIoT脅威検知・データ利活用への取り組み 〜 - NTT docomo Business Engineers' Blog
https://engineers.ntt.com/entry/202607-sign-interop2026/entry
Interop Tokyo 2026 〜 セキュアなモバイル基盤とIoT脅威検知・データ利活用への取り組み 〜 - NTT docomo Business Engineers' Blog
NTTドコモビジネス株式会社（以下、ドコモビジネス）は、日本最大級のネットワーク展示会である「Interop Tokyo 2026（会場：幕張メッセ、会期：2026年6月10日〜12日）」において構築されるShowNetにContributorとして参加し、docomo business SIGN™を活用したモバイル回線・セキュリティ・データ利活用に関する取り組みを行いました。 本記事では、ShowNet管理網へのセキュアなリモートアクセス環境の構築、脅威検知・フローログを活用したセキュリティ機能の評価、およびMEC/SDPFクラウドサーバーやクラウドサービスと連携したテレメトリデータの収集・可視化についてご紹介します。また、それらの構成や検証内容、検証を通じて得られた知見についても解説します。
engineers.ntt.com
August 3, 2026 at 6:04 AM
riclep.dev
For CSS #Interop2026 I’d love to see grid rules working everywhere. Saves a lot of awkward ::before and ::after or other hacks.
September 8, 2026 at 10:06 AM
th3s4mur41.me
Yes, thanks for pointing in the right direction 😊
Since the draft spec does not include this yet, I guess it's too early to propose this for #Interop2026, right?
September 11, 2025 at 1:37 PM
th3s4mur41.me
#Interop2026 is open! My top picks so far:
- @container style()
- sibling-count() / sibling-index()
- Invoker API
- calc-size() / interpolate-size()
- field-sizing: content

Vote or propose here 👉 github.com/web-platform...

Let’s push the web forward!

#WebDevs #CSS #Browsers #WebCompat
web-platform-tests/interop
web-platform-tests Interop project. Contribute to web-platform-tests/interop development by creating an account on GitHub.
github.com
September 8, 2025 at 10:01 AM
shawnbrink.bsky.social
#MicrosoftEdge and #Interop2026 #Edge
www.elevenforum.com/t/microsoft-...
Microsoft Edge and Interop 2026
Windows Blogs: Microsoft Edge is commited to a more powerful, predictable, and reliable web platform. One way we pursue those goals is via our ongoing participation in the Interop project. This year ...
www.elevenforum.com
February 12, 2026 at 10:22 PM
applex4.bsky.social
🚀 Apple abre la convocatoria para Interop 2026: los desarrolladores ya pueden enviar ideas para mejorar la interoperabilidad entre navegadores. Tienes hasta el 24 de septiembre para participar 👨‍💻🌐
#Apple #Interop2026 #WebDev
September 6, 2025 at 4:21 PM
cwilcox808.c.im.ap.brid.gy
@westbrook
#interop2026
February 10, 2026 at 1:10 AM
macprime.bsky.social
Neue Technologie-Vorschau zu #Safari #WebKit + #Interop2026 steht an
Neue Technologie-Vorschau zu Safari; «Interop 2026» steht an
Viel Neues für WebKit und Safari
www.macprime.ch
September 9, 2025 at 10:46 AM
felix.gripe
webdev #Interop2026 things that would be useful in my current project:

html (all)
lazy
February 13, 2026 at 8:26 AM
new3rd.bsky.social
AhnLabがInterop2026でOTセキュリティソリューションを披露#東京都#港区#OTセキュリティ#AhnLab#CPS_PLUS

株式会社アンラボがInterop2026で、産業用制御システム向けのOTセキュリティソリューション「AhnLab CPS PLUS Platform」を展示します。
AhnLabがInterop2026でOTセキュリティソリューションを披露
株式会社アンラボがInterop2026で、産業用制御システム向けのOTセキュリティソリューション「AhnLab CPS PLUS Platform」を展示します。
news.3rd-in.co.jp
June 9, 2026 at 3:57 AM
westbrook.mastodon.social.ap.brid.gy
@cwilcox808 😢

I forgot to submit for #interop2026, but...

https://github.com/web-platform-tests/interop/issues/208

https://github.com/web-platform-tests/interop/issues/791

https://wpt.fyi/results/css/css-shadow?label=master&label=experimental&aligned&q=host%20has

Everything's sitting there […]
Original post on mastodon.social
mastodon.social
February 10, 2026 at 1:27 AM