TensakuSensei is a free Chrome add-on and tool developed by Shin. Designed specifically for web directors, this program aims to improve work efficiency by allowing users to write corrections and instructions directly on websites and take screenshots.

With TensakuSensei, web directors can easily make corrections and provide instructions by inserting rectangles, arrows, text, and images in any shape they desire. This enables them to clearly communicate their feedback and guidance to the development team or other stakeholders. Additionally, the program allows users to capture the current on-screen content, ensuring that the corrections and instructions accurately reflect the specific areas being addressed.

Overall, TensakuSensei offers a convenient and efficient solution for web directors to streamline their workflow and enhance collaboration with their team. Its user-friendly interface and versatile annotation features make it a valuable tool for anyone involved in web development and design.