Baseline features you can use today
Learn about just some of the features that are part of Baseline.
Blog
Our latest news, updates, and stories for developers
Script evaluation and long tasks
When loading scripts, it takes time for the browser to evaluate them prior to execution, which can cause long tasks. Learn how script evaluation works, and what you can do to keep it from causing long tasks during page load.
Optimize input delay
Find out what input delay is, and learn techniques to reduce it for faster interactivity.
Find slow interactions in the field
Learn how to find slow interactions in your website's field data so you can find opportunities to improve its Interaction to Next Paint.
How large DOM sizes affect interactivity, and what you can do about it
Large DOM sizes have more of an effect on interactivity than you might think. This guide explains why, and what you can do.
Diagnose slow interactions in the lab
Learn how to take your field data into the lab to reproduce and identify the causes behind slow interactions.
Client-side rendering of HTML and interactivity
Rendering HTML with JavaScript is different than rendering HTML that's sent by the server—and that can affect performance. Learn the difference in this guide, and what you can do to preserve your website's rendering performance—especially where interactions are concerned.
Using the Web Vitals extension to debug Core Web Vitals issues
The Web Vitals extension now shows you more debugging information to help you identify the root causes of Core Web Vitals issues.
New to the web platform in April
Discover some of the interesting features that landed in stable and beta web browsers during April 2023.
Build in-browser WordPress experiences with WordPress Playground and WebAssembly
The full WordPress powered by PHP running solely in the browser with WebAssembly
How Slow Roads intrigues gamers and developers alike, spotlighting the surprising capabilities of 3D in the browser
Discover the potential of WebGL with the infinite, procedurally-generated scenery of this casual driving game.
New functionality for developers—brought to you by WebAssembly
A showcase of tools now available on the web thanks to WebAssembly.
New to the web platform in March
Discover some of the interesting features that landed in stable and beta web browsers during March 2023.
What are source maps?
Improve web debugging experience with source maps.
Push notifications are now supported cross-browser
Deliver timely and useful notifications to your users.
JavaScript import maps are now supported cross-browser
With import maps, importing ES modules now becomes a lot better.
6 CSS snippets every front-end developer should know in 2023
Toolbelt worthy, powerful, and stable CSS you can use today.
Trigonometric functions in CSS
Calculate the sine, cosine, tangent, and more in CSS.
New to the web platform in February
Discover some of the interesting features that landed in stable and beta web browsers during February 2023.
Introducing Learn Privacy
Today we are launching Learn Privacy—the next course in our series to help get you up to speed with modern web development.
All of Learn HTML! is available
All modules have now been published.
Last baseline alignment
All major browser engines now support last baseline alignment in CSS grid and flexbox.
Container queries land in stable browsers
This Valentine's day, we're celebrating size container queries and container query units landing in all stable browsers.
Learn Images!
Today we have launched Learn Images! In our newest course learn about image formats, compression, responsive images, and performance.