We deserve a better streams API for JavaScript
2026-02-27
The Web streams API has become ubiquitous in JavaScript runtimes but was designed for a different era. Here's what a modern streaming API could (should?) look like....
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How we rebuilt Next.js with AI in one week
2026-02-24
One engineer used AI to rebuild Next.js on Vite in a week. vinext builds up to 4x faster, produces 57% smaller bundles, and deploys to Cloudflare Workers with a single command....
How Cloudflare’s client-side security made the npm supply chain attack a non-event
2025-10-24
A recent npm supply chain attack compromised 18 popular packages. This post explains how Cloudflare’s graph-based machine learning model, which analyzes 3.5 billion scripts daily, was built to detect and block exactly this kind of threat automatically....
Improving the trustworthiness of Javascript on the Web
2025-10-16
There's no way to audit a site’s client-side code as it changes, making it hard to trust sites that use cryptography. We preview a specification we co-authored that adds auditability to the web....
A year of improving Node.js compatibility in Cloudflare Workers
2025-09-25
Over the year we have greatly expanded Node.js compatibility. There are hundreds of new Node.js APIs now available that make it easier to run existing Node.js code on our platform....
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September 22, 2025 1:00 PM
Cap'n Web: a new RPC system for browsers and web servers
Cap'n Web is a new open source, JavaScript-native RPC protocol for use in browsers and web servers. It provides the expressive power of Cap'n Proto, but with no schemas and no boilerplate....
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September 08, 2025 1:00 PM
Bringing Node.js HTTP servers to Cloudflare Workers
We've implemented the node:http client and server APIs in Cloudflare Workers, allowing developers to migrate existing Node.js applications with minimal code changes....
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June 11, 2025 1:00 PM
We shipped FinalizationRegistry in Workers: why you should never use it
Cloudflare Workers now support FinalizationRegistry, but just because you can use it doesn’t mean you should....
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April 09, 2025 2:00 PM
Cloudflare Snippets are now Generally Available
Cloudflare Snippets are now generally available, enabling fast, cost-free JavaScript-based HTTP traffic modifications across all paid plans. ...
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March 24, 2025 1:00 PM
New URLPattern API brings improved pattern matching to Node.js and Cloudflare Workers
Today we're announcing our latest contribution to Node.js, now available in v23.8.0: URLPattern. ...
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March 19, 2025 1:00 PM
How we train AI to uncover malicious JavaScript intent and make web surfing safer
Learn more about how Cloudflare developed an AI model to uncover malicious JavaScript intent using a Graph Neural Network, from pre-processing data to inferencing at scale. ...
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December 16, 2024 2:00 PM
Internationalization and localization: bringing Cloudflare Radar to a global audience
Internationalization and localization require more than translation: tone, images, date/time and number formatting, among other items, need to be considered....
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November 19, 2024 10:00 PM
DO it again: how we used Durable Objects to add WebSockets support and authentication to AI Gateway
We used Cloudflare’s Developer Platform and Durable Objects to build authentication and a WebSockets API that developers can use to call AI Gateway, enabling continuous communication over a single...
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September 09, 2024 9:00 PM
More NPM packages on Cloudflare Workers: Combining polyfills and native code to support Node.js APIs
Workers now supports more NPM packages and Node.js APIs using an overhauled hybrid compatibility layer....
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June 26, 2024 8:23 PM
Automatically replacing polyfill.io links with Cloudflare’s mirror for a safer Internet
polyfill.io, a popular JavaScript library service, can no longer be trusted and should be removed from websites...
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February 29, 2024 5:51 PM
polyfill.io now available on cdnjs: reduce your supply chain risk
Polyfill.io is now available on cdnjs to reduce the risk of supply chain attacks. Replace your polyfill.io links today for a seamless experience...
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November 14, 2023 2:00 PM
Streaming and longer context lengths for LLMs on Workers AI
Workers AI now supports streaming text responses for the LLM models in our catalog, including Llama-2, using server-sent events...
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September 28, 2023 1:00 PM
Running Serverless Puppeteer with Workers and Durable Objects
We’ve heard from developers that configuring and maintaining their own serverless browser automation systems can be quite painful. The Workers Browser Rendering API solves this...
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May 19, 2023 1:00 PM
More Node.js APIs in Cloudflare Workers — Streams, Path, StringDecoder
Today we are announcing support for three additional APIs from Node.js in Cloudflare Workers — stream, crypto, and http/https.request. This increases compatibility with the existing ecosystem of open source NPM packages, allowing you to use your preferred libraries in Workers....
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March 23, 2023 1:05 PM
Node.js compatibility for Cloudflare Workers – starting with Async Context Tracking, EventEmitter, Buffer, assert, and util
Over the coming months, Cloudflare Workers will start to roll out built-in compatibility with Node.js core APIs as part of an effort to support increased compatibility across JavaScript runtimes...
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