CSDN自动展开+一键复制代码 is a free Chrome add-on designed to enhance users' experience on CSDN without requiring a login. The primary features include the ability to select and copy code snippets directly, automatically expand full articles, and eliminate intrusive login pop-ups, making it easier for users to access content effortlessly.

The tool is user-friendly and requires minimal setup; simply install and enable the extension to access all functionalities. Once the page has fully loaded, the copy button changes to indicate that users can click to copy the desired code. This add-on is intended solely for educational and personal use, and users should be aware of its limitations regarding commercial applications.