If you want something to be downloaded, you need to declare Content-Disposition: attachment <https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content

If you want something to be downloaded, you need to declare Content-Disposition: attachment <https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Co...> Otherwise, the browser is perfectly ok to attempt to render it if it understands how to