Congrats to editors Wilco Fiers, Kathy Eng and Daniel Montalvo for the newly published @w3c #WebStandard "Accessibility Conformance Testing (ACT) Rules Format 1.1" #timetoadopt
▶️ https://www.w3.org/TR/act-rules-format/
ACT Rules Format defines a format for writing #accessibility test rules.
Congrats to editors Chris Blume, Pierre-Anthony Lemieux, @svgeesus, @chrisneedham, Leonard Rosenthol, Chris Arley Seeger, Simon Thompson and Cosmin Truta for the newly published @w3c #WebStandard "Portable Network Graphics (PNG) Specification (Third Edition)"! #timetoadopt
▶️ https://www.w3.org/TR/png-3/
PNG 3 notably adds Coding Independent Code Points (CICP) for color space identification. @svgeesus explains it all: https://svgees.us/blog/cICP.html
This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of static and animated raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, greyscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.
Congrats to editors Manu Sporny, @TallTed, @ivan_herman, Gabe Cohen, Dave Longley, Michael Jones, Greg Bernstein, Michael Prorock, Markus Sabadello, Drummond Reed, Orie Steele, [email protected], Mahmoud Alkhraishi and Michael B. Jones for the latest @w3c #WebStandard "Verified Credentials 2.0". This family of 7 specs makes expression, exchange and verification of digital credentials easier and more secure. #timetoadopt
=> https://www.w3.org/TR/vc-data-model-2.0/
Read more: https://www.w3.org/press-releases/2025/verifiable-credentials-2-0/
A verifiable credential is a specific way to express a set of claims made by an issuer, such as a driver's license or an education certificate. This specification describes the extensible data model for verifiable credentials, how they can be secured from tampering, and a three-party ecosystem for the exchange of these credentials that is composed of issuers, holders, and verifiers. This document also covers a variety of security, privacy, internationalization, and accessibility considerations for ecosystems that use the technologies described in this specification.
Congrats to editors Gary Kacmarcik and Travis Leithead for the two newly published @w3c #WebStandard "UI Events KeyboardEvent key Values" and "UI Events KeyboardEvent code Values" #timetoadopt
▶️ https://www.w3.org/TR/uievents-key/
▶️ https://www.w3.org/TR/uievents-code/
These specifications outline the required values for the key attribute as well as the values for the code attribute of a KeyboardEvent.
german: gerade endeckt bei @brucel.bsky.social #ReadingList #HTML attribute command und commandfor #a11y #webstandard
Just randomly thinking about how I can write a valid HTML page and it will work on any browser, and on any server, on the internet.
It would be really cool if any ActivityPub post I made essentially followed the same expectation, wouldn’t it?
What is the Shadow DOM?
The #shadowDOM is a web standard that enables encapsulation of #HTML and #CSS,
allowing developers to create components with isolated styling and structure.
Those so called web components are like custom HTML-Elements, but with all the utilities and properties of built-in HTML-Elements. You can roughly think of it like React Components, but with plain VanillaJS.
https://developer.chrome.com/docs/css-ui/declarative-shadow-dom
A new `/llms.txt` file has been proposed to standardize how LLMs interact with websites. This Markdown file, placed in the root directory, provides brief background info, guidance, and links to detailed files, helping LLMs quickly understand key content and process website information. Companies like Anthropic are already adopting this standard, further fueling the rise of unreliable AI search engines.
#llm #ai #webstandard #web #webdev #llmstxt #llms #tech #anthropic
How do you petition W3 to accept a standard?
Every major browser supports a "fill available" keyword, but all of them are prefixed.
- "-moz-available"
- "-webkit-fill-available"
- idk what the Chrome one is but I know it exists
The page generator I'm using (Ktor) supports the keywords "available", "fill-available", and "-webkit-fill-available" but not "-moz-available" which is the only one FireFox/Librewolf supports.
I can manually set it to "-moz-available", yes. But then I only support Firefox-based browsers. Which I'm not opposed to at this point in time, but one day I might prefer another browser and this will be obsolete.
If I were writing this page statically, I would have the option of writing all of the (broken) options in, but the generator only supports one option at a time.
Friendly reminder how creepy some early standards were which tried to show connections between websites and the people running them.
The 'XFN 1.1 relationships meta data profile' standard defines rel="me" which we use now for Mastodon verification but it defines rel="crush", "sweetheart", "muse" and "date" as well and maybe we should revisit some old standards and remove those creepy things.
W3C Developers
sprungmarkers (she / her)
Chris Alemany🇺🇦🇨🇦🇪🇸
CuriousCoder
alpharee
Caroline Bell 
tomate 🍅