Theresa O'Connor

@hober@w3c.social
80 Followers
121 Following
58 Posts

Hi, I'm Tess. I wear several hats around here:

* I sit on the @ab
* AC Rep for Apple
* HTML WG co-chair
* Privacy CG co-chair

& I sat on the @tag for a number of years.

I manage the Web Standards team at Apple; my engineers and I are heavily engaged in standards work here at @w3c as well as at #WHATWG, @ietf, #Ecma, and elsewhere.

Websitehttps://tess.oconnor.cx/
LinkedInhttps://www.linkedin.com/in/hober/
Personal@hober
Theresa O'Connor3d ago
Peter Kröner4d ago

TIL: you don't need canIUse.com or ChatGPT,
document.implementation.hasFeature() has you covered!

Specs: https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature 🤡

#webdev #javascript

Theresa O'ConnorJul 4
IgaliaJul 4
The 129th Ecma GA in Geneva on 25th June approved new recognition awards to people for their contributions and services. We at Igalia would like to congratulate our friends and collaborators @robpalmer and Michael Saboff for being awarded and thank them for their diligent work in TC39.
Theresa O'ConnorJul 2
jwzJul 2

You MUST listen to RFC 2119.

Eric Bailey: It turns out you can just pay people to do things. I found a voice actor and hired them with the task of "Reading this very dry technical document in the most over-the-top sarcastic, passive-aggressive,...
https://jwz.org/b/ykqi

Theresa O'ConnorJul 1
Jen SimmonsJul 1

If you code websites, then you KNOW how it’s been to style form controls.

Watch this #cssday talk from @ntim.bsky.social to learn why it’s been so hard, and how we are going to fix it for the future.

https://www.youtube.com/watch?v=WgSiqSqxTxw

#css #webdev #formcontrols

Form control styling - Tim Nguyen - CSS Day 2025

YouTube
Theresa O'ConnorJun 19
Joseph Lorenzo Hall, PhDJun 19
Rest in peace, Fred Baker, former IETF Chair, ISOC Trustee and Board Chair, and Cisco Distinguished Engineer. I learned so much from Fred, both technically and about hard work. https://en.wikipedia.org/wiki/Fred_Baker_%28engineer%29
Fred Baker (engineer) - Wikipedia

Theresa O'ConnorJun 13
Show threadHiddeJun 13
Complexity (of the internet) is good, it is what gives it resilience, make an internet that's hard to turn off, Maria explains #PubConf2025
Theresa O'ConnorJun 11
@tobie I’m gonna be in Geneva on the 24th. Will you be around? Would you like to meet up?
Theresa O'ConnorJun 10
Jon HenshawJun 10

Your reminder that HTML is pretty fantastic all on its lonesome.

https://sans.style

#WebDev #HTML

HTML without CSS

HTML looks and functions well by default without the need for CSS or JavaScript. This page includes the majority of HTML elements, including semantic HTML elements, that have a unique visual style or interaction.

Sans Style
Theresa O'ConnorJun 9
Jen SimmonsJun 9

We have 7 videos on web technology at WWDC25!!
- What’s new in Safari and WebKit
- What’s new for the spatial web
- Learn more about Declarative Web Push
- What’s new in passkeys
- Verify identity documents on the web
- Unlock GPU computing with WebGPU
- Meet WebKit for SwiftUI

https://webkit.org/blog/16987/web-technology-videos-at-wwdc25/

Web technology videos at WWDC25

It’s time for WWDC25!

WebKit
Theresa O'ConnorJun 9
David JohnsonJun 9

We’re excited to announce a web-based Safari Web Extension Packager this year. Using this tool, you can build a Safari Web Extension without using a Mac or Xcode.
https://developer.apple.com/documentation/safariservices/packaging-and-distributing-safari-web-extensions-with-app-store-connect

#safari #WWDC25

Packaging and distributing Safari Web Extensions with App Store Connect | Apple Developer Documentation

Upload and distribute Safari Web Extensions without using a Mac or Xcode.

Apple Developer Documentation