How is it possible to download in a web page without going through the browser download manager?

for example, on Intel"s official website, click download, there is no download dialog box, but a progress bar, after the end of the progress bar, you can click to install, how is this achieved? And it can also detect my hardware information through the web page.
https://www.intel.cn/content/...

Apr.26,2022

should first install an agent software that resides in memory and starts a local http service, so that the js on his web page can interact with the local agent for system detection, or bypass the browser for download. The premise of all this is to install a small agent software first.

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