If you don't mind downloading the whole file into the browsers memory this should do: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Sending_a

If you don't mind downloading the whole file into the browsers memory this should do: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Sending_and_Receiving_Binary_Data https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequ... https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL https://developer.mozilla.org/en-US/docs/Web/API/URL/createO... And then programmatically click the object URL.