I am building a web site directory that lists thousands of companies. Each company has a external company web site, and several social sites, such as Facebook, Twitter, and Instagram. I have a nice set of square icons that represent each of the social sites.
For the link to the company's web site, I have a text link that says "visit our website". That doesn't look as good as the icons though.
Is there a common or typical icon that represents a link to a company's web site?