Web Development

We've open-sourced our Accessible Components Library, and, as you might expect, this includes the HTML, CSS, and JavaScript code. But, we thought, "Why stop there?" So, we've also published our documentation, including the accessibility requirements, test scenarios, and even the working automated tests which validate each one.

When a page looks fine in a browser but its discoverability is unclear, I’d separate three checks:

• Does the original HTML contain the page’s main content and useful navigation?
• Does the content appear only after JavaScript runs?
• Is the response different when you change the user agent, or is an access rule getting in the way?

Those are different problems. A 200 status alone doesn’t settle any of them, and a missing mention in an AI answer doesn’t prove a rendering problem either.

Disclosure: I’m the founder of Prerender Buddy. Our open-source CLI checks returned HTML and discovery files: https://github.com/kopachlager/prerenderbuddy-cli. It flags things worth inspecting; it doesn’t run a browser or prove that a real crawler failed.

If a rendering gap is confirmed, the fix could be in the app’s rendering approach or a managed prerendering layer. PB offers the latter, alongside monitoring: https://prerenderbuddy.com/. If the site already returns complete HTML, extra prerendering may not be needed.

What evidence do you normally collect before choosing between changing the app and adding a rendering service?

JSX, short for JavaScript XML, itself short for Extensible Markup Language, is a syntax extension for JavaScript that allows writing XML-like embeds anywhere an expression is accepted:

Chrome 152 introduces connection allowlists, a new security mechanism that lets you create a strict network sandbox for your documents and workers.

There’s a new web platform feature flighting in Chromium called Declarative Partial Updates. This proposal adds a new <?marker> element which enables out-of-order streaming of content. Rather than the traditional way of building the HTML you need on the server, or sending JSON down to a JavaScript framework, you can staple HTML onto the initial response and use the <template for=""> syntax to inject that content into the <?marker name=""> placeholder.