Developer builds AI Chrome extension to unify video speed controls across course platforms

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A software developer created CourseSpeed, a Chrome extension designed to address inconsistent video player controls across major e-learning platforms including Udemy, Coursera, LinkedIn Learning, and Skillshare. The tool offers precision playback speed control ranging from 0.25x to 16x, with per-platform memory that retains individual speed preferences for each site. It also features AI-generated, timestamp-linked study notes using speech-to-text and LLM summarization, along with learning analytics and full keyboard shortcut support. Built with vanilla JavaScript and Chrome's Manifest V3 architecture, all user data is stored locally with no server involvement. The extension recently launched on Product Hunt and is available on the Chrome Web Store, with its design informed by a 2022 study finding that watching content twice at 2x speed improves retention over a single normal-speed viewing.

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