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A maintained, feature-rich and performance oriented, neofetch like system information tool.

🤖 Powerful asynchronous state management, server-state utilities and data fetching for the web. TS/JS, React Query, Solid Query, Svelte Query and Vue Query.

🌳 Tiny & elegant JavaScript HTTP client based on the Fetch API

The name “SWR” is derived from stale-while-revalidate, a cache invalidation strategy popularized by HTTP RFC 5861. SWR first returns the data from cache (stale), then sends the request (revalidate), and finally comes with the up-to-date data again.

The fetch() function is a Promise-based mechanism for programmatically making web requests in the browser.

Snippets target current evergreen browsers (Chrome, Edge, Firefox, Safari). Internet Explorer is no longer supported by Microsoft, so IE-specific fallbacks have been removed. If you still need them, see the last IE-compatible version.