百度地图工具 is a Chrome add-on developed by 大风 that enhances the functionality of Baidu Maps by automatically marking the locations where users have viewed panoramas. This feature allows users to easily identify which areas have been explored through the panoramic view.

In addition to the automatic marking of panoramic locations, the add-on offers several other useful features. It displays the date when the panoramas were captured, allowing users to see the recency of the images. It also provides the ability to pick coordinates on the map, supporting various coordinate systems such as GCJ02, WGS84, BD09, and BD09MC. Users can manually mark selected points on the map and create a list of marked locations for easy reference.

Overall, 百度地图工具 is a handy add-on for Baidu Maps users who want to keep track of their panoramic explorations and utilize additional features such as date display, coordinate picking, and manual marking of points.