Mercifully, there is a way to embed LaTex directly into HTML for a blog. I used this great tutorial which handles the setup for many different blog platforms. You do need access to raw HTML to include a JavaScript handler. Just look up your platform (i.e. Weebly, Wordpress, Blogger, Tumblr, etc...) and go.
Here I've copied his two examples:
\[ \sum_{k=1}^n k = \frac{n(n+1)}{2} \]
So pretty. So easy!