A very useful addon for anyone, if like me, you find having the default page on a new tab being dictated by the browser developers inconvenient and would rather choose your own.

Whether it be a favorite search engine (even region specific, e.g. https://www.google.co.uk) a file on your local computer or pretty much anything else, this addon makes it extremely easy and very fast to accomplish.

Highly recommended based on my experience and unhappiness with the basic browser functionality.