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Hidde

@hidde.blog

Into front-end, accessibility, ethics. I work on standards for NL gov. Co-editor of WCAG 3, contributor of Web Sustainability Guidelines. On W3C's Advisory Board. Blogger: hidde.blog, reader/concert goer: log.hidde.blog, speaker: talks.hiddedevries.nl.

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Latest posts by Hidde @hidde.blog

thanks Steve, was lovely to see you yesterday! Have fun at de Efteling!

07.03.2026 16:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
display: green; applying the web sustainability guidelines - Hidde de Vries - CSS Day 2025
display: green; applying the web sustainability guidelines - Hidde de Vries - CSS Day 2025 YouTube video by Web Conferences Amsterdam

Really good talk by @hidde.blog about sustainability in tech, and a few things we can do to improve the current state of energy consumption.

youtu.be/u76IcrzZPwc

#sustainability #tech

07.03.2026 15:22 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

πŸ›« off to California for CSUN Assistive Technology Conference, to present and get feedback about WCAG-EM 2, and meet all the peers.

07.03.2026 08:05 πŸ‘ 7 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
W3C Accessibility Guidelines Evaluation Methodology (WCAG-EM) 2.0 This document describes a methodology with a step-by-step process to evaluate how well digital products conform to Web Content Accessibility Guidelines (WCAG) 2.

We're working on making WCAG-EM 2 a Note (www.w3.org/TR/wcag-em-2/).

A 3 week review period just started, we'd love to hear it if you DO accessibility assessments or RECEIVE reports.

Does the β€œwebsite” to β€œdigital products” change work? Anything else you feel strongly about re reporting/reports?

06.03.2026 15:44 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

At CSUN I'll present WCAG-EM 2, a methodology to report on accessibility.

We're using WCAG-EM at scale in The Netherlands, with 100s of organisations producing 1000s of reports, somewhat reproducibly.

Attend to see how it differs from VPAT+how better evaluations help teams fix barriers faster.

04.03.2026 19:02 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
display: green; applying the web sustainability guidelines - Hidde de Vries - CSS Day 2025
display: green; applying the web sustainability guidelines - Hidde de Vries - CSS Day 2025 YouTube video by Web Conferences Amsterdam

πŸŽ₯ Out now: video of my @cssday.nl talk on making the web greener at work with the Web Sustainability Guidelines youtu.be/u76IcrzZPwc

04.03.2026 11:37 πŸ‘ 18 πŸ” 5 πŸ’¬ 0 πŸ“Œ 1
WCAG 3 March Update – Wholly Accessible The Accessibility Guidelines Working Group (AGWG) has updated the WCAG 3 working draft. It now includes initial Developing content for most of the requirements. These will evolve a great deal over the...

See also this update from our co-chair Rachael Bradley Montgomery whollyaccessible.org/2026/03/03/w...

04.03.2026 07:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

2/2

(Important note: it is a draft, far from completed, and we have lots of work planned. Feedback is welcomed!)

03.03.2026 10:45 πŸ‘ 2 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
W3C Accessibility Guidelines (WCAG) 3.0 W3C Accessibility Guidelines (WCAG) 3.0 will provide a wide range of recommendations for making web content more accessible to users with disabilities. Following these guidelines will address many of ...

The latest Working Draft of WCAG 3 is out today! w3.org/TR/wcag3/

In this version, we've:
- moved lots of requirements to β€œDeveloping” phase,
- wrote down how to test,
- mapped reqs to user needs (using DAF),
- split out 'applies when' and 'except when' to massively increase readability
1/2

03.03.2026 10:45 πŸ‘ 34 πŸ” 11 πŸ’¬ 1 πŸ“Œ 0
me and manuel printed in black and white on receipt paper

me and manuel printed in black and white on receipt paper

I don't have proof of everyone I chatted to but I definitely chatted to @matuzo! #SotB26

01.03.2026 11:11 πŸ‘ 18 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

yesterday's State of the Browser may have been my favourite so far! Incredible talks and people, good vibes! Brb just buying next year's ticket

01.03.2026 11:10 πŸ‘ 31 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

it was a great talk!

01.03.2026 11:05 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

this is what a day of #SotB26 does to you! I believe I had just had an insightful conversation with @aardrian.bsky.social

01.03.2026 08:32 πŸ‘ 5 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Firefox AI Coding Policy β€” Firefox Source Docs documentation

Mozilla have this AI coding policy, that assigns full responsibility to the human submitting the code. I like it a lot in principle, but it may be too optimistic (I do see with AI people tend to take less responsible approaches) firefox-source-docs.mozilla.org/contributing...

27.02.2026 11:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Bug 2011195 - When an agent commits, don't add itself as author r=ai4… Β· mozilla-firefox/firefox@71cc24b …dev-reviewers,suhaib DONTBUILD Differential Revision: https://phabricator.services.mozilla.com/D279515

When robots are part of a process, their involvement MUST be identified.

Identify LLM output (β€˜from AI: ’), disclose generated images, and attribute LLM authored code to that LLM.

Here's Mozilla hiding Claude's attribution github.com/mozilla-fire...

(via @pikesley.mastodon.me.uk.ap.brid.gy)

27.02.2026 09:25 πŸ‘ 9 πŸ” 3 πŸ’¬ 3 πŸ“Œ 0

woohoo @cydstumpel.nl!! πŸ™Œ

26.02.2026 18:03 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Tim ik ben #BOOS dat er nog steeds politici op X zitten, kunnen jullie langs de nieuwsredacties gaan en een boycot bewerkstelligen πŸ™

(als het nieuws er niet meer naar linkt sterft het uit toch)

26.02.2026 07:53 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
SotB14 | State of the Browser Welcome to the fourteenth edition of State of the Browser, a yearly one-day, single-track conference with widely-varying talks about the modern web, accessibility, web standards, and more, organised b...

πŸš†off to London to find out what state the browsers are in.

2026.stateofthebrowser.com

26.02.2026 07:50 πŸ‘ 11 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
jenn schiffer extremely online and incredibly logged on

if you can afford it, often $25 or less a year, get a custom domain name so you have somewhere to always point to so people can find you when they want/need to. having jennschiffer.com for so long has been paramount to my mobility online over the past 25 years

25.02.2026 20:12 πŸ‘ 78 πŸ” 11 πŸ’¬ 1 πŸ“Œ 1

reported

25.02.2026 13:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Some inject children's blood to stay young, some think AI can improve declining birth rates. It goes on.

25.02.2026 08:54 πŸ‘ 18 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

In my slide decks, I've started including quotes of what AI leaders believe to be true, and helps break through the notion that they are some sort of genius magicians.

This context matters, if you are to decide about using and trusting (!) the products they make.

25.02.2026 08:54 πŸ‘ 32 πŸ” 7 πŸ’¬ 1 πŸ“Œ 1
Threat Modeling Guide

I am not sure how much of it happens in that group or elsewhere but threat modeling and security reviews definitely still take place.

here's some info on how: www.w3.org/TR/threat-mo...

24.02.2026 20:17 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

it looks good, just not sure about it being free

24.02.2026 19:33 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I figured, the AI grouping name feature gave it away

24.02.2026 19:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
AI, web, and standards by Hidde de Vries

Just did a guest lecture on AI and web standards for policy makers. Thanks @lolaodelola.bsky.social
for the invite!

slides and links: talks.hiddedevries.nl/JrJus9/ai-we...

24.02.2026 19:29 πŸ‘ 6 πŸ” 4 πŸ’¬ 2 πŸ“Œ 0

haha gmta, currently pondering the same

24.02.2026 19:25 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I know a lot of hosting providers (that also sell domain names) have 1 click installs. Could it be as simple as a common CMS with a couple of plugins to make it better?

they could get traffic by picking a cool URI and advertise it on Insta as _the_ place to get tickets/merch/limited edition vinyl.

24.02.2026 17:43 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I feel fricced all the time when I'm on there πŸ™ƒ

24.02.2026 14:19 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

What can we do to break through this?

24.02.2026 10:59 πŸ‘ 2 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0