To create a downloadable file from the stream, we use the Blob API combined with WritableStream .

: It is optimized to support complex, high-traffic sites such as YouTube, Discord, Reddit, and GeForce NOW, often including built-in support for bypassing CAPTCHAs. Key Technical Capabilities

const blob = new Blob(chunks, type: 'application/json' ); const url = URL.createObjectURL(blob);

This is the "brain" of the proxy. It uses a Service Worker to intercept all outgoing network requests from the web application. It then rewrites these requests and their responses in real-time, effectively "tricking" the browser into thinking it is staying on the same origin while it actually fetches data from a proxy server.