What are Progressive Web Apps?
An introduction to Progressive Web Apps (PWAs) and the three pillars that separate them from other web apps.
What is accessibility?
An accessible site is one whose content can be accessed regardless of any user's impairments, and whose functionality can also be operated by the most diverse range of users possible.
What is mixed content?
Mixed content occurs when initial HTML is loaded over a secure HTTPS connection, but other resources are loaded over an insecure HTTP connection.
What is speed?
Speed matters, but what exactly do we mean by it? What does it mean to have a fast site?
What is WebAssembly and where did it come from?
An introduction to WebAssembly (sometimes abbreviated Wasm), the portable binary-code format and corresponding text format for executable programs as well as software interfaces for facilitating interactions between such programs and their host environment.
What's new in PageSpeed Insights
Learn about the latest in PageSpeed Insights to help you better measure and optimize your page and site quality.
When to use HTTPS for local development
Why you need "cross-origin isolated" for powerful features
Some web APIs increase the risk of side-channel attacks. Learn why you should mitigate risk with the browser isolated environment, cross-origin isolated.
Why HTTPS matters
HTTPS protects the integrity of your website, protects the privacy and security of your users, and is a prerequisite for new and powerful web platform APIs.
Customize the window controls overlay of your PWA's title bar
With the Window Controls Overlay feature, developers can customize the title bar of installed PWAs so that their PWAs feel more like apps.
Build in-browser WordPress experiences with WordPress Playground and WebAssembly
The full WordPress powered by PHP running solely in the browser with WebAssembly
Workbox: your high-level service worker toolkit
Workbox is a high-level service worker toolkit built on top of the Service Worker and Cache Storage APIs. It provides a production-ready set of libraries for adding offline support to web apps.
Integrate PWAs into built-in sharing UIs with Workbox
How to register routes in Workbox so that your Progressive Web App shows up in system-level sharing UIs, alongside platform-specific apps.
Workers overview
How web workers and service workers can improve the performance of your website, and when to use a web worker versus a service worker.
New tricks in XMLHttpRequest2
Building web apps with Yeoman and Polymer
Your first performance budget
Ensure your site loads fast with a step-by-step guide to defining thresholds for performance metrics that are meaningful for your site.
Take the 2021 scroll survey to help improve scrolling on the web | Blog
An introduction to the 2021 Scroll Survey from the Chrome team
2021 Scroll Survey Report | Blog
Get the 2021 Scroll Survey Report and words from the Chrome team about how this impacts priorities and plans for Chromium and the web.
Accessibility Week | Blog
This week we celebrated accessibility work and highlighted resources to help you make your sites and applications usable by everyone.
Learning from you about AI | Blog
What we learned from you about AI and the web today.
The align-content property for block layouts is now part of Baseline | Blog
The CSS align-content property for block layout is now part of Baseline Newly available.
Announcing Baseline in action | Blog
Baseline in action is a new series developed to help developers learn how to use Baseline features together to build better user experiences.
Immutable array updates with Array.prototype.with | Blog
Learn how to use this new method to update an array without mutating the original array.
@property: Next-gen CSS variables now with universal browser support | Blog
Semantic custom properties with @property just reached Baseline Newly available.
Benchmarking the performance of CSS @property | Articles
What impact does @property have on the performance of your CSS?
Introducing Baseline Alerts | Blog
Baseline Alerts have landed on the Web Platform Status Dashboard. Learn how they can shorten the time between awareness of a web feature, and when you can adopt it.
Join the WebDX CG for an AMA on Reddit | Blog
Join the AMA on r/webdev on September 18 and ask us anything!
The ClipboardItem.supports() function is now Baseline Newly available | Blog
The static ClipboardItem.supports() function to determine support for a given MIME type is now part of Baseline.
A definition update for Baseline | Blog
The definition of Baseline has changed. Find out why we made the change, and what it means for Baseline.
Baseline for CSS properties now in Chrome DevTools | Blog
Baseline information is now available for CSS properties in the Elements panel of Chrome DevTools!
April 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during April 2025.
April 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during April 2026.
August 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during August 2025.
December 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during December 2025.
February 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during February 2025.
February 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during February 2026.
January 2025 Baseline monthly digest | Blog
In its first edition, this Baseline monthly digest covers happenings in Baseline at both Google and the web developer community in January 2025.
January 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during January 2026
July 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during July 2025.
July 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during July 2026.
June 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during June 2025.
June 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during June 2026.
March 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during March 2025.
March 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during March 2026.
May 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during May 2025.
May 2026 Baseline monthly digest | Blog
Read about various happenings with Baseline during May 2026.
November 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during November 2025.
October 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during October 2025.
September 2025 Baseline monthly digest | Blog
Read about various happenings with Baseline during September 2025.
Now in Baseline: animating entry effects | Blog
Improve the legibility of text when using fallback fonts.
Effortlessly get Baseline target data with the updated Baseline Checker tool | Blog
Get data to select your Baseline target with Google Analytics data—now faster and easier.
The Baseline Tooling Hackathon starts now! | Blog
Want to make the web better for a chance to win cash prizes? Join the Baseline Tooling Hackathon!
The winners of the Baseline Tooling Hackathon are... | Blog
3,000 developers participated, but only 3 can win. Find out who won and what they built!
Iterator helpers have become Baseline Newly available | Blog
Iterator helpers became Baseline Newly available as of March 31, 2025.
The Baseline Features audit is now available in Lighthouse | Blog
Learn which web features are used on a page—and their Baseline status—with the new Lighthouse Baseline features audit.
Navigation API - a better way to navigate, is now Baseline Newly Available | Blog
The Navigation API is now Baseline Newly available, providing a better way to handle navigation in single-page applications.
The Baseline Netlify extension has shipped | Blog
The Baseline Netlify extension helps developers to understand which Baseline targets are best supported by users. Learn more in this post on how to use it!
Baseline 2024: more tools to help web developers | Articles
web-features dataset, Web Platform Status dashboard, Baseline status widget and more! Take a look back on Baseline in 2024.
ruby-align is Baseline Newly available | Articles
ruby-align is now part of Baseline