The "Black Butler" themed high-definition wallpaper HomePage is a browser extension program that features a collection of exquisite 4K high-definition wallpapers from "Black Butler". It helps users quickly find their favorite high-definition wallpapers and set them as their browser background.

The browser extension has the following features:
- Massive high-definition wallpapers: The extension has collected a large number of high-definition wallpapers from "Black Butler", covering different resolutions and sizes to meet the needs of users on different devices.
- Easy setup: With just a few clicks, users can set their desired wallpaper as the browser background and adjust its size and position. The extension also supports setting the wallpaper switching frequency.
- Automatic adaptation: The extension supports automatic adaptation to different browsers and devices, ensuring users do not encounter compatibility issues during use.
- No advertisements: The extension does not have any ad interruptions and does not affect the user's browsing experience.
- Personalized search: Users can choose their preferred search engine for convenient information search.
- Calendar function: The date and time are displayed on the homepage for clear visibility. Users can choose whether to display the current time. If this function is enabled, users can choose between a 12-hour or 24-hour clock to display the current time.
- Real-time weather: The weather conditions are updated in real-time. Users can choose whether to enable the display of the current time and weather.
- To-do list function: Users can easily record today's to-do items and avoid forgetting important matters.
- Note function: Easy recording of life details.

This product will earn revenue through Amazon affiliate, Ebay affiliate, Booking affiliate, and will also earn revenue from Bing search and Baidu search.