In this chapter, we learn how to write a server that lets users log in via passwords. That process is called authentication.

In this chapter, we install a package manager for our operating system. That enables us to install shell commands that we can’t get via npm.

In this chapter, we explore Markdown, a lightweight markup language that’s easy to learn and used a lot when writing about programming: documentation, comments, etc. We’ll need it in the next chapter. Learning it may seem like a detour but it’s easy to pick…

In this chapter, we learn how to use the version control system Git and a useful companion website, GitHub. Both are important tools when programming in teams but even help programmers who work on their own.

WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications.

Browserslist has added support for Baseline queries. Find out what that could mean for your developer workflow.

Read about various happenings with Baseline during August 2025.

Join the AMA on r/webdev on September 18 and ask us anything!

Our popular Learn CSS course has been updated with new modules covering the latest CSS features.

Find out about the progress of Interop 2025, and how to submit your ideas for 2026.

Want to make the web better for a chance to win cash prizes? Join the Baseline Tooling Hackathon!

Discover some of the interesting features that have landed in stable and beta web browsers during August 2025.

At Chrome, we want to know what your Baseline target is—and here's how you can help!

In this chapter, we learn how to create web pages via HTML.

In this chapter, we perform a few steps to prepare us for web development.

In this blog post, I’d like to talk about CSS: I wish it supported inner breakpoints – breakpoints not for viewports or containers but for HTML elements inside viewports or containers.

I was looking for a way to create images (think screenshots) of CSS layouts that I can use in HTML, EPUB and PDF files. This blog post describes my solution – which produces SVG images.

Read about various happenings with Baseline during September 2025.

Discover some of the interesting features that have landed in stable and beta web browsers during September 2025.

Many Node.js features that once required third-party packages are now built into the runtime itself.