Glasp is a social PDF and web highlighter that enables users to collect, organize, and share insightful ideas from websites, PDF documents, and YouTube videos without switching between applications. Users highlight text directly on web pages, add notes, and access their curated knowledge across all devices through a browser extension available for Chrome, Safari, Edge, Brave, and Opera.

The platform combines personal knowledge management with social discovery. Users can follow like-minded learners, explore a home feed of highlights shared by others, and build a public profile that acts as a dynamic knowledge library. Glasp tracks learning progress through a knowledge graph and surfaces content from people with overlapping interests.

AI-powered features extend the core highlighting workflow. Users can generate AI summaries of web pages, PDF files, and YouTube videos, and chat with their highlights and notes to extract insights. The platform supports YouTube transcript extraction with timestamps and on-page video summaries. Users can also build a personalized AI clone that reflects their accumulated highlights and notes.

Glasp integrates with Kindle Cloud Reader for highlight import, and supports export to Notion, Obsidian, Roam Research, Evernote, Apple Notes, Google Keep, OneNote, Goodnotes, Notability, Capacities, Joplin, and Zotero. Highlights and notes can be exported in text, CSV, Markdown, HTML, and JSON formats. Audio file transcription, quoteshot generation, and Snipd podcast integration are available. The free plan includes unlimited public highlights, while Glasp Pro unlocks unlimited private highlights, advanced AI summaries, and additional features.