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Polymer 3.0 is here!

Version 3.0 of the Polymer library brings web components into the mainstream, embracing JavaScript modules and npm.

Update your apps and elements for seamless interop with popular frameworks and tools and easy access to the full JavaScript ecosystem.

Welcome to the future...

Starting a new project? Try our next-gen products, headed for release in the coming months:


An ultra-light, highly performant custom element base class with a simple but expressive API.


PWA Starter Kit

Your one-stop shop for building Progressive Web Apps that make the most of the modern web.

PWA Starter Kit

Material Web Components

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

Material Web Components

About the Polymer Project

As a team of front-end engineers embedded in the Chrome team, our mission is to make the web better, by helping developers unlock the web’s full potential and by spurring the web platform to evolve and improve.

We work on libraries, tools and patterns to help developers build modern Progressive Web Apps, taking advantage of cutting-edge features like Web Components, Service Workers and HTTP/2.

We also participate in the standards process, doing our part to ensure that front-end developers have a strong voice in the evolution of the platform.

More About the Project

Why Web Components?

Web Components are the web platform's native solution for component-based development.

With Web Components, you can create reusable custom elements that interoperate seamlessly with the browser’s built-in elements, or break your app up into right-sized pieces, making your code cleaner and less expensive to maintain.

Our products sprinkle a bit of sugar over the standard Web Components APIs and shine a light on best practices for building elements and apps, making it easier for you to get great results.

More about Web Components

Who's using Polymer products

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Polymer 项目的最新发布

来自 Polymer 项目的最新发布的更新。

Web Components v0 已弃用

随着新的 Web Components 规范被广泛支持,旧的标准已过时,并从 Chrome 中被删除了。

Polymer Elements 3.0 FAQ

一份更新您的应用,使用 Polymer Elements 3.0 的 FAQ

Browser Compatibility

Polymer products work in all major browsers (Chrome, Firefox, IE, Edge, Safari, and Opera).
chrome logo firefox logo internet explorer logo edge logo safari logo opera logo


  • Property - 属物
  • Attribute - 属性
  • Web Components - Web 组件
  • Shadow DOM - 阴影 DOM
  • Service Worker - 服务工作者
  • Progressive Web App - 渐进式 Web App
  • Custom Element - 自定义元素
  • Slot - 插槽
  • Shim - 垫片
  • Mixin - 混入