I saved it as a png but if I zoom in it still has gray pixels.

Do I need to save it as a monochrome bitmap directly from illustrator? What is the file extension for that?

Hi, I am trying to create a font with one image. That is all I need. I'm using font forge but I don't have enough experience and it is very confusing. I have added the character and generated the font but it doesn't work. I can't add the image but it looks kind of like this: // but more slanted. I created the image in illustrator and have tried copying and pasting to font forge and importing as jpg. I don't know what else to do.