this website contains some free online tools

toolsyep.com

Keyword Density tool
open graph tool
and several other tools.

I'm still developing it.
any comments or feedback is welcome.
I also hope it is a useful tool

I checked your website and the various tools functions and it works like a charm. The tools available works better than many paid websites. Great work. I specifically liked the keyword density tool.

So yes, it is a very useful site. I am bookmarked it for my own use. Promote it well.