Equations in Blogger

Blogger has no plugin system, but it does let you add a script to every page of your blog. Add fxTeX there once, and any LaTeX you write in a post between $…$ or $$…$$ is shown as a properly typeset equation — free, with no licence key.

To add it:

• First Log in to Blogger: http://www.blogger.com
• Then choose Layout from drop-down list menu underneath the "More Options" button.:

• Within the 'Manage Blogs' section, select 'Design', to get:

• On the right side, click 'Add a Gadget', to get:

• Scroll down and select 'HTML/Javascript', to get:

• Before entering the following text, make sure that you are in 'Edit HTML' mode(you are in that mode when that 'Rich Text' title is showed in upper right corner), enter the following text into the 'Content' area:
  

  <script src="https://fxtex.codecogs.com/fxtex.min.js"></script>
  <script>fxTeX.autoRender();</script>Copy

• Now select 'Save' and exit.

Then write equations straight into your posts, for example $e^{i\pi}+1=0$. Readers can right-click any equation to copy it or open it as a graph — see the right-click menu. To write equations with a toolbar rather than by hand, compose them in the online fxEditor and copy the LaTeX across.