It depends on the server, which has to implement HTTP Ranges [0]. Servers like nginx and Apache 2 should suport it. I'm not certain about the whole Node.js and

It depends on the server, which has to implement HTTP Ranges [0]. Servers like nginx and Apache 2 should suport it. I'm not certain about the whole Node.js and Go backends out there. I think the support in Firefox does not have changed. [0]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Range_requests https://developer.mozilla.org/en-US/docs/Web/HTTP/Range_requ...