Cloudflare Workers documentation
Cloudflare Workers provides a serverless execution environment that allows you to create entirely new applications or augment existing ones without configuring or maintaining infrastructure.
Installing the Workers CLI
To install wrangler, ensure you have npm installed, preferably using a Node version manager like Volta or nvm to avoid permission issues, then run:
$ npm install -g @cloudflare/wrangleror install with yarn:
$ yarn global add @cloudflare/wranglerRead more about installing wrangler.
Playground
View this Hello World example in the Workers playground:
addEventListener("fetch", event => { event.respondWith(handleRequest(event.request))})
async function handleRequest(request) { return new Response("Hello world")}Popular pages
- Learning: How Workers works – learn how Cloudflare’s global network powers Workers
- Pricing – learn about the Free and Bundled plans
- Reference: HTMLRewriter – parse and transform HTML from inside a Worker
- Limits – learn about plan limits (e.g. free plans get 100,000 req/day)
Community
Explore third-party packages that work on Workers, submitted by our users!
Connect with the Workers community on Discord to ask questions, show off what you’re building, and discuss the platform with other developers.
Follow @CloudflareDev on Twitter to learn about product announcements, new tutorials, and what's new in Cloudflare Workers.
These docs are built with the Cloudflare Docs Engine.