Hello. I don’t know how to download from webviewer and I don’t know how to access that downloaded
Do you mean the Web Api? That is what is used to retrieve data from google sheets or something similar. If so, look at https://x.thunkable.com/copy/93026841bc0b8475a506e5712611cde0 which has an example of the GET command. Or, do you want to download/save the website HTML and components? That may not be possible with the current blocks (?).