Chrome Add-on for Hatena is an unofficial extension that complements the editing experience in Hatena Blog's "What You See Is What You Get" mode. This free add-on provides several useful features to enhance your editing capabilities.

With this add-on, you can easily add "h2" tags for headings, create a table of contents for your blog posts, and automatically insert the current date. Additionally, you have the option to highlight your text by changing the background color to gray, and align your text and images to the left, center, or right.

One of the notable features of this add-on is the ability to assign classes to "p" tags, allowing you to apply custom styling to specific paragraphs. This can be particularly useful for bloggers who want to add their own CSS styles to their blog posts.

Overall, Chrome Add-on for Hatena is a valuable extension for Hatena Blog users who want to enhance their editing experience and have more control over the appearance of their blog posts. Give it a try and take your blog editing to the next level.