Extreme Markup Editor for Blogger™ is a Chrome add-on developed by Akihiro HARAI. This free program is designed to make writing blog posts in Blogger easier by providing a markup language similar to Hatena Markup. With Extreme Markup, you can create hierarchical lists, definition lists, tables, and even paste and prettify source code in just one step.

The editor, specifically built for editing Extreme Markup, works seamlessly with Blogger's functionality. You can use all the familiar buttons like Bold, Add Link, or Insert Image. This makes it a perfect solution for programmers or those who are more accustomed to text editors than word processors.

Extreme Markup Editor for Blogger™ offers a wide range of features including paragraphs, headings, blockquotes, pre-formatted texts, footnotes, raw HTML tags, links, images, and even LaTeX. If you want to enhance your blogging experience in Blogger, this add-on is definitely worth checking out.