Workers

Wrangler now supports using the CLOUDFLARE_ENV environment variable to select the active environment for your Worker commands. This provides a more flexible way to manage environments, especially when working with build tools and CI/CD pipelines. What's new Environment selection via…

Workers Builds now supports up to 64 environment variables, and each environment variable can be up to 5 KB in size. The previous limit was 5 KB total across all environment variables. This change enables better support for complex build…

Until now, if a Worker had been previously deployed via the Cloudflare Dashboard, a subsequent deployment done via the Cloudflare Workers CLI, Wrangler (through the deploy command), would allow the user to override the Worker's dashboard settings without providing details…

Enable automatic tracing on your Workers, giving you detailed metadata and timing information for every operation your Worker performs. Tracing helps you identify performance bottlenecks, resolve errors, and understand how your Worker interacts with other services on the Workers platform.…

Workers, including those using Durable Objects and Browser Rendering, may now process WebSocket messages up to 32 MiB in size. Previously, this limit was 1 MiB. This change allows Workers to handle use cases requiring large message sizes, such as…

You can now access preview URLs directly from the build details page, making it easier to test your changes when reviewing builds in the dashboard. What's new A Preview button now appears in the top-right corner of the build details…