Copy Stack is a Chrome extension designed to enhance clipboard management by allowing users to copy multiple clips and reduce them into a single value. This tool enables users to easily accumulate clips on a stack, providing options to pop them off by pasting or visually deleting values. The extension supports various methods for reducing the stack, including summation, difference, joining with new-lines, and joining with commas.

The user interface features a modern material design and supports both light and dark themes, which can be set to auto-switch. Copy Stack is versatile, functioning seamlessly across multiple sites, and it automatically saves the stack for later use. To get started, users simply install the extension, toggle it for the current tab, select a reducer, and begin collecting clips to manage their clipboard effectively.