Thx for the reply I saw the help. But everything is related to Qik Sense (Server).
My questión is if I can open a Mashup let's say in "offline" mode without using a full domain url. Copying all the neccesary files and be able to open the .html file just like when for example you save a web page and you can see it later without connection.
I don't think websockets, our communication protocol, plays very nice if you try to load the page over file:// BUT if you have Qlik Sense Desktop installed you can deploy the mashup in the Extensions folder C:\Users\<your username>\Documents\Qlik\Sense\Extensions. Then you can access it through http://localhost:4848/extensions/<YourMashupFolder/<YourHTMLPage>.html
It's as close as offline mode you are going to get and after all you still need a Qlik Sense engine somewhere for your mashup to work.
Just to clarify, you need to host your mashup on a webserver. Qlik Sense Desktop comes with a static webserver so you can reuse that.
If you don't have a webserver installed then you won't be able to deploy your mashup. Also the help article that was linked to before contains some good info on what paths you would need to change in order for the mashup to work if you deploy it on a machine that does not have Qlik Sense installed.