MathJax Bookmarklet is a bookmarklet for rendering Tex/LaTeX and MathML notation on pages dynamically using mathjax library.
Pages don't have to include mathjax.js. Library is included and configured dynamically. LaTeX preprocessor will render equations delimitated by "$", "$$", "\[" and "\]".
Note: This bookmarklet will also try to render math notation inside iframes. This will be successfully executed only on iframes on the same domain because cross-domain policy don't support modification of iframe content from other domains.
Minify the bookmarklet from bookmarklet.js by using
uglifyjs bookmarklet.js -m. (with UglifyJS2)
Install the bookmarklet HERE.