Glasp: The Social Highlighter Building AI Clones from Your Reading Habits

Glasp is a rapidly growing web and PDF highlighting tool that's transcended the typical note-taking app by layering in social learning and AI personalization. With over 1 million users worldwide, the platform lets you highlight text across the web, PDFs, YouTube videos, and Kindle books—then automatically organizes everything with tags and searchable metadata. What sets Glasp apart is its social layer: you can follow like-minded learners, discover insights from their highlights, and build a personalized AI clone trained on your own highlights and notes that serves as both a knowledge engine and digital legacy.

The product ecosystem is remarkably comprehensive. Users can highlight YouTube videos with timestamps, import highlights from Kindle, Pocket, Medium, and other services, and export to major note-taking apps like Notion, Obsidian, and Roam Research in multiple formats (Markdown, HTML, CSV, JSON). Recent AI additions let you summarize webpages, PDFs, and videos, transcribe audio to text, and even chat with your highlights to extract insights. The interface reportedly mirrors the intuitive simplicity of Tumblr meets Google Reader—designed to enforce deep reading rather than surface skimming.

User testimonials reveal why Glasp resonates: it functions as a forcing function for thoughtful engagement with content. One researcher noted it "drastically reduces the time for note-taking" while acting as a shared knowledge repository for teams. Students praise its ability to help them "quickly refer to important parts of articles" for assignments. The common thread is that Glasp transforms passive browsing into active curation—one user described it as "a habit now" that makes them "read with more attention." The platform has earned trust across tech companies, universities, and research institutions, with coverage from Forbes, Business Insider, The Guardian, and Entrepreneur validating its significance in the knowledge management landscape.