Style Options
[Yotsuba B] [Yotsuba D] [Yotsuba]

General Enhancements
Comment Expansion: Expands truncated comments
Thread Expansion: View all replies without changing pages
Fixed Navigation: Pins navigation to the top of the page even when scrolling
Youtube Embedding: Embeds YouTube and content from other support sites in posts.

Filtering
Reply Hiding: Hide replies
Thread Hiding: Hide threads
Anonymize: Makes everybody anonymous

Image Options
Inline Expansion: View fullsize images without opening a new window or tab
Reverse Image Search: Insert links to reverse image search engines

Monitoring
Thread Updater: Get new posts automatically without refreshing the page
Expand Filenames: Expands an image's filename on mouseover

Posting
Quick Reply: Reply without reloading the page

Quoting
Quote Previews: Show quoted post on hover
Inline Quotes: Show quoted post inline when clicked on
Post Backlinks: Shows a post's replies in its header
Mark Replies: Appends "(You)" to all posts linking to yours