IconVault's Streams API playground makes streaming data click. Run live ReadableStream, WritableStream and TransformStream demos, watch chunks arrive in a timestamped chunk log, and read the exact code behind every demo. The full pipeline demo chains read, transform and write exactly like a real download pipeline.

Everything is free and runs fully in your browser, with zero setup. Backpressure is the key idea: the reader pulls, the writer waits for readiness, and `pipeTo` wires producers to consumers without ever buffering the whole file in memory.