There are off-the-shelf open-source libraries for this that are pretty decent and are kept up-to-date by the community. For example, you can just do browser.is_

There are off-the-shelf open-source libraries for this that are pretty decent and are kept up-to-date by the community. For example, you can just do browser.is_bot? after you install https://github.com/fnando/browser#bots https://github.com/fnando/browser#bots