How to download files from the router?

Question

Firmware

Every router, modem, ont, has a Web face.
Figuratively speaking, the Web server rises on the router, and the website, which is displayed when we go to the Web face of the router.
There is a need to download such a 'site'. Downloading each file manually is inconvenient, I tried different programs, but none of them downloads, a maximum of 1-2 files downloads and that's it.
Who has any thoughts, how can I download such a necessary thing?

Answer 1

What's the point of downloading it? In any case, you will only get the html + css + js part, and the scripts that work with the router hardware are not available ...