Glasp

About Glasp

Glasp is a highlighter for the web and for PDFs that treats highlights as a shared knowledge layer rather than as private annotations locked in one reader. You highlight and note as you read, and everything accumulates into a searchable personal library that can be exported or auto-synced to Notion on a daily schedule, so the reading you already do compounds into notes you can actually use later. The social half is what makes it distinct: public highlights are visible to others, so you can follow what specific people are marking up across the web, which turns a curation habit into a discovery channel — and, unusually for this category, gives the free tier real standalone value rather than making it a trial. AI features sit on top of the library, with access to chat models for interrogating what you have collected. The paid tiers are structured around privacy and volume rather than around gating the core function: private highlights, higher limits and the automatic Notion sync are what you pay for. It is a good fit for researchers, students and anyone maintaining a reading pipeline who wants highlights to end up somewhere structured instead of scattered across browser extensions and PDF apps.

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