[llboston]

Yes you are right, this can be done in client side javascript, but the downside is that it can't be updated. I do plan to add more tools down the road.

[derekzhouzhen]

You can still update the code as long as you host it in your server. A static server is sufficient.

[llboston]

Got ya. Right now it's html + js, a little easier to maintain. Pure js is definitely an option.