I built Sitemap Inspector to keep sitemaps readable. It became a bug finder: Adobe, Anthropic, GOV.UK, Man City, Semrush and X all ship sitemap errors.

XML sitemaps still help search engines find your pages. Browsers are removing XSLT, the feature that makes some sitemaps look pretty. Here is what to do.

Trusted Types make the browser reject plain strings at DOM injection sinks like innerHTML, demanding a vetted typed value instead. Switched on with two CSP directives, it neutralises a whole class of ...

What changed in The Website Specification — new topics, status changes, and removals, newest first.

Two standards landed in a week, both partly Google, neither aware of the other. OKF packages knowledge; ARD finds it. I composed both and filed the gaps.

Anti-AI CAPTCHAs treat every agent as an attacker. They break legitimate automation, punish paying customers, and bet against the way the web is going.

A platform-agnostic, full specification of the technical features a good website should have. Built in the open under an MIT licence.

Open Source First is the right EU procurement principle. Funding the commons it depends on is the other half. What FAIR taught me about the supply side.

In the 24 hours before I started writing this post, Plausible told me joost.blog had 254 visitors. My server logs told me 536 fetches over the same window came from on-demand AI bots like ChatGPT-User...

Google killed FAQ rich results on May 7, 2026. The lesson isn't that schema is dead. It's that GEO is starting the same cycle in AI search.

Why I redesigned joost.blog: getting rid of AI-generated post imagery, building the plumbing for longer pieces, and the typography rabbit hole that landed on Klim's Domaine and Pitch.

Domain migrations are asymmetric bets: the upside has a ceiling, the downside doesn't. Here is how to plan, prepare, and execute one without losing what you already have.

Scan your website to see if it's ready for AI agents. Check for llms.txt, MCP, agent skills, and other agent-friendly standards.

Skills install as loose folders with no package manager. Here's the pattern I landed on after publishing a first attempt and getting corrected on LinkedIn.

Skills install as loose folders with no package manager. Here's a pattern that makes each skill check for updates — and install them — when you invoke it.

The SEO Framework analyzed 180,000 AI bot requests and found zero llms.txt lookups. Their conclusion: not worth implementing. That conclusion reveals a misunderstanding of how web standards work, and ...

For twenty years, wanting a website meant needing a CMS. That's no longer true. The real question people ask now is simpler: how do I get my content on the web?

Create links to your Obsidian documents that your agent can share with you on WhatsApp, Telegram or elsewhere.

AI will confidently sign off on anything. The question is whether you will too. I’m a member of my old high school’s “AI council”. My kids go there now, so I have both my own experience and my kids’ t...

What if your users could submit a bug report and have a pull request ready for review before you’ve even seen the ticket? That’s what we built for Rondo Club, a sports club management app. It’s a full...

Cloudflare introduced markdown for agents today, something I'd been working on too, here's my WordPress approach to it.

WordPress struggles with positioning and product direction. Joost argues it’s time for real product and marketing teams, instead of requiring developers to do it.

Linux Foundation announces FAIR Package Manager project, creating simplicity, security and consistency for the WordPress ecosystem

Introduction  Recent observations have highlighted a significant surge in new plugin submissions to the WordPress repository, as noted in this post. We also know that Automattic recently “unpaused” th...

People perceive WordPress as insecure. Joost explains why that view persists and what we can do to start changing it.

At Yoast, we had one mission: make SEO easier. For a long time, SEO for everyone was Yoast’s tagline, and we meant it. We helped millions of people optimize their content. We made technical SEO more a...

Joost de Valk shares why WordPress needs AI-ready infrastructure, not just flashy features, to support real, scalable innovation.

Progress Planner 1.2 guides you through key Yoast SEO settings to help you boost your site’s visibility with ease.

Google has introduced what it calls “Marketing content usage”, in a subtle but significant update to its Merchant Center documentation (and yes, they sent out an email about it too). If you sell physi...

YouTube video by Post Status

The CloudFest Hackathon reignited the old WordPress contributor spirit—innovation, teamwork and real progress in action!

Should we standardize Redirect-By HTTP headers?

We’re launching Progress for WordPress, a new blog series on WordPress trends. First up: why marketing students struggle with WordPress.

A good community has your back. They want you to succeed and will help make your success a reality. Being part of a good community is a wonderful thing–it’s empowering, rewarding, and humbling all at…