It's usually a bad idea to use somebody elses name in the domain name and their logo as part of your own logo. Phantomjs isn't a big organization with lawyers but I'd say their name and logo are still copyrighted.
thanks for the info. This would fall under trademark actually (not copyright). I would assume my use is such as using "Git" in products like GitHub, but you are right that it's not something I'd want to get in a fight over. I'll try to figure out an alternative name for my next release.
I made it, let me know if you have any questions.
It's only for single pages right now. Adding a crawler next.