how do you change a .unity file to a .html or web gl?

I have 3 games published on kongregate but there still all in .unity format only.
I’m thinking of maybe using some of them as a teaching tool but for that they shouldn’t require a plug in witch unity dose.

How can I change the format so people don’t need unity web player for them to work?

you have to open that project in latest unity version

now unity 5 is supporting webgl platform so you have to switch your project in to webgl and than u build the project you will get .html file

unity also supporting many platforms now please checkout the other platform also