button

I'm not sure if I understand your question. Do you want to have the Reader button always visible or do you want it to appear to the right of the bookmark star ?

Note that Firefox only shows the Reader icon at the right end of the location bar when a webpage meets certain conditions like a specific layout (text containers).

I loved Reader button.I want to see it allways and effective in use.When The site on adress bar is open,Reader button in act as a default rule as it is set.How can I set Reader button acts as active without clic Reader button

Hi

For the reasons that cor-el mentioned above, that would not be a really good idea.

For a website to work in Reader View, it needs to meet criteria around text density that would mean that you would have a very broken browsing experience.