I built an AI-powered video speed controller for online courses

Short summary

An indie developer built CourseSpeed, a Chrome extension that adds precision speed control (0.25x–16x) with per-platform memory across Udemy, Coursera, LinkedIn Learning, and Skillshare, plus AI-generated timestamp-linked study notes via speech-to-text and LLM summarization. The extension uses Manifest V3 with vanilla JS and stores all data locally, keeping server costs at zero. It recently launched on Product Hunt and the Chrome Web Store, with per-platform speed presets as the most requested feature so far.

• •CourseSpeed is a Chrome extension offering precision video speed control (0.25x–16x) with per-platform memory across major online learning sites
• •AI study notes feature uses speech-to-text plus LLM summarization to generate timestamp-linked, exportable notes with one click
• •Built on Manifest V3 with vanilla JS and local Chrome storage; launched on Product Hunt with active users

Generated with AI, which can make mistakes.