One-Click Lesson

One-Click Lesson is a small Chrome extension built for people who read on the web and keep hitting unfamiliar terms. Instead of opening a new tab, copying the phrase and pasting it into a chatbot, you highlight the word or idea, right-click, and a concise AI explanation is rendered on the page. The extension is deliberately minimal — a 27 KB package with a single focused job — so it stays out of the way while you read.

The workflow is built around staying in flow. Because the explanation appears where you are already reading, you do not lose your place or context, which is the main friction that interrupts research, study sessions and long documentation reads. Version 1.1 added a customizable learning prompt, so you can shape the tone and depth of the answers the assistant gives you, and avoid re-typing the same instruction to a general-purpose LLM over and over.

The extension is published on the Chrome Web Store for free and is listed under tools for learning and productivity. It is aimed at students, researchers and anyone who reads a lot of technical or second-language material and prefers a low-friction explanation over a full chat session.