Answer 1

In android you have to add "view-source:" at the beginning of link,

example:
view-source:link_of_website

after that you will be able to see source code and you can copy text and save it as .html file.

⚠️ It only works with "Google Chrome"

(or)

use Inspect [ Ctrl + Shift + I ]

Answer 2

Inspect element

Answer 3

Do a right click and click view source code. Then select everything and paste it in a new text file. Save this file as a .html file and your good to go.

An alternative:
Click save file in your browser and save it as a html file.