How to view html file in remote unix server?

It is possible, but with some playing around on the server.

Once you have ssh'ed into the server, install a web server in that box. Say the file is named index.html, you should make it available at the URL http://localhost:8000/index.htmlor port number can be anything.

The simplest method I can think of starting a web server at that location is

cd /directory/where/html/is/present
python -m SimpleHTTPServer 8000  # For python 2
python3 -m http.server 8000 # For python 3

This works provided python is installed on the server. It should not be that hard to install it as python is available from almost every package manager in every flavor of linux.

Now that html is available at python

http://localhost:8000/index.html

on that machine.

But we have not yet configured the browser in such way.

To do that you need to ssh into the server again, but with a -D option this time

ssh servername -D 7000

-D specifies application level tunneling when connecting via ssh

Then in Firefox, preferences/options -> Advanced -> Networks -> Connection Settings -> Choose Manual Proxy configuration

SOCKS HOST should be localhost , port no 7000.

Then the html should be directly available at

http://localhost:8000/index.html

in your Firefox browser.

This feature is only available in the Firefox browser.

You can mount the remote directory with sshfs which gives you easy access to all the files. E.g.:

sshfs user@server:/directoryToMount /localDirectory