知了 - 知乎问答采集助手 is a free Chrome add-on developed by suziwen1. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program aims to assist users in quickly collecting and downloading articles from the popular Q&A platform, Zhihu.

With 知了 - 知乎问答采集助手, users can easily collect and download various types of content, including images, code blocks, and formulas. The add-on provides a one-click collection and download feature, allowing users to gather articles efficiently. Additionally, it supports features such as ZIP packaging, formula and code block support, automatic image capture, PDF export, and article management.

Overall, 知了 - 知乎问答采集助手 offers a simple and user-friendly solution for collecting and managing articles from Zhihu. It is completely free to use, making it an accessible tool for users who frequently engage with the platform.