Can you upload a file seperate like http://john.doe/manifest.json

I wonder if you can set a file ex manifest.json file as its own page https://john.doe/manifest.json. It would help if you would reply as soon as possible

The link you posted does not go anywhere. What kind of file? Files can be uploaded and given there own link on a nav bar or posted as text or a button on a page, And it can be a page by itself but it has to be an actual file like pdf, or jpg, something like that.