I am curious, why are you trying to use your TV as a computer? It is rather ill suited. A web page is not a picture, it is a very complex series of commands on how to draw the page. That is why one web page fits all computers.
A TV does not have a processor to interpret a stream of commands.
If it is a visual thing you are trying to accomplish your best angle of attack is to mirror your computer on your TV. Then use a plug in keyboard as your entry device.
That adds the missing processor and graphics capability.
Is your question better stated how do I mirror my laptop screen to my TV using roku?
I dont know. Roku has a browser. I thought I could get the streaming channels on it
I am not the OP but you have stated the question I have.
I access the internet via Verizon FIOS. I have no Cable TV subscription, just an internet subscription. I access the internet though a laptop computer. I now own a Roku Smart TV, which includes Apps (such as Hulu) that are useful. But I cannot mirror my laptop screen to my TV using roku. Ideally, I would like to do this thru WiFi.