Polymer Project

Libraries, tools, and standards for a better web: LitElement, lit-html, web components...



A simple base class for creating fast, lightweight web components.

PWA Starter Kit

Starter templates for building full-featured Progressive Web Apps from web components.



An efficient, expressive, extensible HTML templating library for JavaScript.

Material Web Components

High-fidelity realizations of Google's Material Design spec that work anywhere on the web.


Web Components Polyfills

A suite of polyfills supporting the Web Components specs.

Polymer Library

Our original web component library.


Polymer Elements

Our original sets of web components, built with the Polymer library.


About the Polymer Project

As front-end engineers in the Chrome team, our mission is to make the web better.

We work on
libraries & tools

to help developers unlock the web’s full potential, taking advantage of cutting-edge features like Web Components, Service Workers and HTTP/2.

We experiment with
new patterns

for building faster and smaller web applications.

We advocate for

helping ensure that web developers have a strong voice in the process.

Why Web Components?

We’re best known for our work on Web Components, a set of modern web standards that give you the power to extend HTML.

With Web Components, you can create and share custom elements that work on any site, interoperate seamlessly with the browser’s built-in elements, and play nicely with frameworks of all kinds.

If you like, you can build your app entirely out of Web Components. Breaking your app up into right-sized components helps make your code cleaner and less expensive to maintain.

Products like LitElement and PWA Starter Kit make Web Components easier to use and highlight best practices, helping you get great results.

Learn more

Latest news

Lightning-fast templates & Web Components: lit-html & LitElement

Blog Post

LitElement release candidate

Blog Post

lit-html 1.0 release candidate

Blog Post