Marginalia Web Highlighter Chrome Exten

Build your own web highlighter Chrome extension with one Claude Code prompt. Select text on any website, pick one of five highlighter colors and it is saved. Come back later and your highlights are still there. Add margin notes and tags, see every highlight of the page in a side panel, and search your whole library. Export to Markdown (Obsidian, Notion), CSV or a JSON backup. What you get: - Manifest V3 extension, plain HTML/CSS/JS, no build step, no dependencies - Clean "study notebook" desig