Glasp
Glasp is a free social web highlighter that allows users to capture, organize, and share their favorite quotes and ideas from web articles and YouTube videos. It fosters 'learning in public' by connecting users with shared interests.
The go-to social highlighter for learners who want to capture ideas across the web and build a public knowledge graph.
Glasp — social web & YouTube highlighter with AI summarization and public knowledge sharing.
Glasp is a browser-extension-based highlighting tool that lets users clip text from web pages, PDFs, and YouTube videos into a personal, shareable profile. Its defining social twist — 'learning in public' — lets you follow other users' highlights and discover ideas by topic. Note: the DB pros/cons content is incorrectly copied from a WordPress performance plugin and does not reflect Glasp; and the DB price_tier of 'free' is outdated — Glasp introduced Pro and Unlimited paid tiers, with pricing updated in May 2026.
Glasp fills a genuine gap: most read-later tools are private silos, while Glasp turns personal annotations into a social discovery layer. The YouTube timestamped highlighting and AI summarization features add real leverage for video-heavy researchers, and the Notion/Obsidian/Readwise integrations keep it from being a dead end.
The social model only works if the people you want to follow are also on Glasp — the network is still niche. The free tier's PDF and audio limits are low, and private highlights require a paid plan, which may surprise users expecting a fully free tool.
A look inside
Frequently Asked Questions
Alternatives
Readwise Reader for deeper annotation workflows with spaced-repetition review.
Hypothes.is for free, open-source web annotation without social features.
Tags
Explore related categories
Conversion Gems independently reviews every tool. We may earn a commission if you sign up through our links — it never affects our verdict or ranking.

