What’s Wrong With This HTML, and Is It Valid?, by @patrickbrosset (@matuzo):
#conformance
69% of developers say it’s important their HTML code is valid:
https://2025.stateofhtml.com/en-US/opinions/#validation_is_important
The reality seems different when we look at what we find on popular websites (cf. https://meiert.com/blog/html-conformance-2025/)—but this should be a great sign for better output quality.
LAST WEEK IN WAI #2
Updated 19th November with AGWG meeting minutes from the 18th November
#WCAG3 #Conformance #WCAG2 new version? #a11y
https://html5accessibility.com/stuff/2025/11/18/last-week-in-wai-2/#update
HTML—the Most Difficult Programming Language in the World, by @j9t [@frontenddogma]:
https://meiert.com/blog/the-most-difficult-programming-language/
Understanding the Removal of 4.1.1 Parsing in WCAG 2.2, by @TPGi:
https://www.tpgi.com/understanding-the-removal-of-4-1-1-parsing-in-wcag-2-2/
Given how prevalent invalid, fantasy HTML has become, HTML validation (conformance-checking) has actually become a performance optimization vector.
A footnote from my article on the first step of reducing HTML file size (omitting optional markup):
2025: 0 of the Global Top 200 Websites Use Valid HTML, by @j9t [@frontenddogma]:
#Development #Findings
HTML conformance in 2025 · “0 of the global top 200 websites use valid HTML.” https://ilo.im/166sca
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#HTML #Validation #Conformance #Website #WebStandards #WebDev #Frontend
2025: 0 of the Global Top 200 Websites Use Valid HTML:
With the latest results from the annual HTML conformance analysis, the legend of what may be the most difficult language in the world continues to grow.
When HTML Speaks Clearly, by (not on Mastodon or Bluesky):
Conformance vs. Compliance, Accessibility Standards Edition, by @hdv:
https://hidde.blog/compliance-conformance/
#accessibility #standards #conformance #compliance #terminology #comparisons #wcag
#Development #Analyses
Can UI components conform to WCAG? · Why they technically can’t, and why it makes sense https://ilo.im/1663ux
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#Accessibility #WCAG #Standards #Conformance #UiComponents #WebComponents #Webpages #WebDev #Frontend
#Development #Cheatsheets
Conformance vs. compliance in accessibility · The meaning of the two easily confused terms https://ilo.im/1662vn
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#Terminology #Accessibility #WCAG #Conformance #Compliance #Legislation #Design #WebDesign #WebDev #Frontend
Why and How to Write Minimal and Valid HTML, a Link Guide, by @j9t [@frontenddogma]:
Why and How to Write Minimal and Valid HTML, a Link Guide:
On using all of HTML’s features and ensuring that HTML code is error-free—two surprisingly underused and unpopular approaches to writing HTML.
https://meiert.com/blog/minimal-and-valid-html/
#webdev #html #minimalism #conformance #performance #optimization
Google: Many Top Sites Have Invalid HTML and Still Rank, by @mattgsouthern.bsky.social (@searchenginejournal):
https://www.searchenginejournal.com/google-many-top-sites-have-invalid-html-and-still-rank/550182/
From the archives:
The 3-Second Frontend Developer Test:
How Often Should We Speak About HTML Conformance?, by @j9t [@frontenddogma]:
Mastering HTML: The Art of Minimal and Valid Code in Professional Web Development (AI Edition), by @j9t [@frontenddogma]:
#guestposts #html #minimalism #conformance #semantics #interoperability #accessibility #standards
From the archives:
On the Uniting Power of a Commitment to HTML Conformance:
Client Info
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