Caltech Course Code Tooltip is a free Chrome extension designed to enhance the browsing experience for those interested in Caltech's academic offerings. This tool automatically detects course codes such as 'CS 1' or 'Ma 108' across various web pages, providing instant access to detailed course information through helpful tooltips. Users can view essential details like course title, units, terms offered, prerequisites, and instructors without leaving the page they are on.

Key features of this extension include the ability to pin tooltips for extended reading, cycle through multiple courses in a list, and perform manual lookups for specific courses using the extension's popup. Customization options allow users to toggle instructor visibility and adjust tooltip timing. Ideal for students, faculty, or anyone interested in Caltech's courses, this tool integrates seamlessly with academic resources, course catalogs, and student forums.